{"title":"Adcom | Vinyl Sound Buffalo, NY USA","description":"\u003cp\u003eDiscover the legendary Adcom lineup at Vinyl Sound Buffalo's premier  authorized Hi-Fi dealer. Adcom is back, and stronger than ever. Born in  New Jersey in the late 1970s and made famous by the Nelson Pass-designed  GFA-555 power amplifier, Adcom has been a cornerstone of high-performance American audio for over four decades delivering audiophile-grade power, precision, and outstanding value that no other brand at the price point can match. At Vinyl Sound Buffalo, we carry the full current Adcom lineup: from the  70-watt GFA-6002 stereo power amplifier to the formidable 450-watt GFA-585se,  along with the GFA-555ms the modernized reissue of the most celebrated amplifier in mid-fi history. Pair it with the GFP-915 stereo preamplifier, featuring a built-in phono stage for vinyl, Bluetooth 5.1, optical and USB  inputs with a 192kHz\/24-bit DAC, and balanced XLR outputs. Whether you're building your first serious two-channel system or upgrading a legacy Adcom setup, our team at Vinyl Sound is here to help you find the  perfect match  with free shipping over $199 and flexible financing available.\u003c\/p\u003e","products":[{"product_id":"adcom-gfa-6002-stereo-power-amplifier","title":"Adcom GFA-6002 Stereo Power Amplifier","description":"\u003ch1\u003eAdcom GFA-6002 Stereo Power Amplifier\u003c\/h1\u003e\n\u003cp class=\"tagline\"\u003e\u003cspan\u003eADCOM introduces the new GFA-6002 power amplifier. Available in 2-channel configurations, this new amplifiers feature more robust and efficient power and heavy-duty reliability. GFA-6002 delivers lower THD (total harmonic distortion) for more clean, pure sound and lower noise for a supremely quiet background.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"tagline\"\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfp-6002-slide11.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"3c94566c\" class=\"elementor-element elementor-element-3c94566c elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003ePerformance\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget_type=\"text-editor.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"36ab4c7b\" class=\"elementor-element elementor-element-36ab4c7b elementor-widget elementor-widget-text-editor\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003eThe GFA-6002 is a stunning amplifier in every way – performance, styling and reliability combined to elevate your music listening to a new experience. Capable of controlling a wide variety of speakers, the GFA-6002 will transport you into the musical performance unlike any other comparable amplifier.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"tagline\"\u003ePower, control, and clarity  delivered with authority.\u003c\/p\u003e\n\u003cp class=\"tagline\"\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfp-6002-slide1.jpg\"\u003e\u003c\/p\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"56acd3d9\" class=\"elementor-element elementor-element-56acd3d9 elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003ePrecision\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget_type=\"text-editor.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"740cfb63\" class=\"elementor-element elementor-element-740cfb63 elementor-widget elementor-widget-text-editor\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003eThe GFA-600x series is designed with toroidal transformers, dual pairs of output transistors, FR4 fiberglass circuit boards and ultra-efficient heat sinks. The GFA-6002 best made toroidal transformers offer exceptional efficiency, minimal excess noise and little excess leakage inductance.\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfp-6002-slide4.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAdcom GFA-6002\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-current, two-channel power amplifier engineered to bring effortless drive and musical precision to any serious system. Built on Adcom's legacy of robust engineering, it delivers clean, dynamic power with the grip and control that reveals the full potential of your speakers.\u003c\/p\u003e\n\u003cp\u003eRated at\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e90 watts per channel into 8 ohms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e125 watts into 4 ohms\u003c\/strong\u003e, the GFA-6002 offers ample headroom for both music and home theatre applications. Its high-current design ensures stable performance across a wide range of speaker loads — maintaining composure and detail even during demanding passages.\u003c\/p\u003e\n\u003cp\u003eBass is tight and controlled, midrange remains open and natural, and highs are smooth without losing detail resulting in a presentation that feels both powerful and composed. With Adcom's reputation for reliability, the GFA-6002 is an ideal foundation for systems that demand both performance and value.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfp-6002-slide6.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e90 watts per channel (8Ω) \/ 125 watts per channel (4Ω)\u003c\/li\u003e\n\u003cli\u003e175 watts bridged mono into 8 ohms\u003c\/li\u003e\n\u003cli\u003eHigh-current design for stable speaker control\u003c\/li\u003e\n\u003cli\u003eClean, dynamic power delivery with low distortion\u003c\/li\u003e\n\u003cli\u003eDamping factor \u0026gt;400 (20Hz–20kHz) for tight bass control\u003c\/li\u003e\n\u003cli\u003eWide power bandwidth: 5Hz to 130kHz (–3dB)\u003c\/li\u003e\n\u003cli\u003eExcellent balance of musicality and impact\u003c\/li\u003e\n\u003cli\u003eSolid build quality with classic Adcom reliability\u003c\/li\u003e\n\u003cli\u003eCompatible with 120VAC \u0026amp; 230VAC \/ 50–60Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (8Ω, stereo)\u003c\/td\u003e\n\u003ctd\u003e70W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (4Ω, stereo)\u003c\/td\u003e\n\u003ctd\u003e100W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (8Ω, bridged mono)\u003c\/td\u003e\n\u003ctd\u003e175W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e+0 \/ –0.25dB, 10Hz–20kHz @ 1W into 8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Bandwidth (–3dB)\u003c\/td\u003e\n\u003ctd\u003e5Hz – 130kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e17,000 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Sensitivity\u003c\/td\u003e\n\u003ctd\u003eVariable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDamping Factor\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;400 (20Hz–20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd\u003e17\" × 5.25\" × 15.5\" (432 × 133.4 × 393.7 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e18 lbs (8.2 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e21 lbs (9.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e120VAC \u0026amp; 230VAC \/ 50–60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"cta\"\u003eWhether building a dedicated stereo system or enhancing a home theatre setup, the Adcom GFA-6002 delivers confident, controlled power that brings your system to life.\u003c\/div\u003e\n\u003cp class=\"store-tag\"\u003eAvailable at\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVinyl Sound\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— Buffalo, NY USA | vinylsound.com\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Adcom GFA-6002?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-6002 is a two-channel stereo power amplifier from Adcom, USA, delivering 70 watts per channel into 8 ohms and 100 watts per channel into 4 ohms with both channels driven continuously, bridgeable to 175 watts mono into 8 ohms and stable into 2-ohm loads. It features a custom toroidal transformer, independent per-channel power supplies, 27,000µF filter capacitance, dual pairs of precision-matched output transistors, a damping factor exceeding 400, and a full feature set including independent input level controls, audio signal sensing auto on\/off, 12V trigger, RCA loop outputs, ground lift switch, and gold-plated connections throughout. The GFA-6002 is available at Vinyl Sound in Buffalo, NY as an authorized Adcom dealer.\u003c\/p\u003e\n\u003ch3\u003eHow does the Adcom GFA-6002 compare to the NAD C 268, Emotiva BasX A-250, and Rotel RB-1552 MKII?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-6002 distinguishes itself through its installation-oriented feature set more than raw power output. The NAD C 268 delivers 80W into 8 ohms using a Hypex nCore Class D module and is primarily a two-channel hi-fi power amplifier without per-channel level controls, loop outputs, or ground lift — better suited to a dedicated stereo setup than multi-zone integration. The Emotiva BasX A-250 offers 125W into 8 ohms at a similar price but lacks independent power supplies per channel and auto-sensing. The Rotel RB-1552 MKII delivers 130W into 8 ohms in a Class A\/B design with strong sonic credentials but at a higher price and without the GFA-6002's distributed audio feature set. For Buffalo and Western New York buyers who need a reliable, feature-complete two-channel amplifier for stereo, home theater, or distributed audio use, Vinyl Sound carries the GFA-6002 as an authorized Adcom dealer.\u003c\/p\u003e\n\u003ch3\u003eWhat does audio signal sensing auto on\/off mean and how does it work?\u003c\/h3\u003e\n\u003cp\u003eAudio signal sensing is a feature that monitors the amplifier's input continuously for the presence of an audio signal. When a signal above a threshold level is detected — indicating that a source component has begun playing — the GFA-6002 powers on automatically without requiring manual activation. After a defined period of inactivity during which no input signal is present, the amplifier transitions to a low-power standby state. This makes the GFA-6002 particularly well suited to secondary listening zones, distributed audio systems, and home theater setups where manual amplifier management is inconvenient or impractical.\u003c\/p\u003e\n\u003ch3\u003eCan the Adcom GFA-6002 be used in a bridged mono configuration?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-6002 supports bridged mono operation, delivering 175 watts into 8 ohms in that configuration. Bridged mono mode combines the output stages of both channels into a single high-power output, making it suitable for driving a dedicated subwoofer, a high-excursion woofer system, or a mono center channel speaker in a home theater installation. A minimum speaker impedance of 8 ohms is recommended for bridged operation given that the amplifier sees half the load impedance in bridge mode relative to stereo.\u003c\/p\u003e\n\u003ch3\u003eWhy are independent per-channel input level controls useful?\u003c\/h3\u003e\n\u003cp\u003eIndependent per-channel input level controls allow you to adjust the gain of each channel individually at the amplifier, rather than relying solely on the volume control or balance adjustment of your preamplifier or processor. In practice, this is particularly valuable in multi-zone audio systems where different rooms or speaker pairs have different sensitivity requirements, or in home theater setups where channel level matching is needed to compensate for speaker placement, room acoustics, or source material that was recorded with unequal levels. It also allows the GFA-6002 to integrate cleanly with processors that do not provide per-channel trim outputs.\u003c\/p\u003e\n\u003ch3\u003eWhat is a ground lift switch and when should I use it?\u003c\/h3\u003e\n\u003cp\u003eA ground lift switch disconnects the chassis ground of the amplifier from the signal ground at the input connections, breaking a potential ground loop between the amplifier and other components in the system. Ground loops occur when two or more components in a system share a common ground path through both the signal cables and the AC power ground, creating a low-frequency hum at 60Hz that is audible through the speakers. If you hear a persistent hum in your system that disappears when you disconnect the signal cable from the GFA-6002, engaging the ground lift will typically resolve it without affecting audio performance.\u003c\/p\u003e\n\u003ch3\u003eWhere can I buy the Adcom GFA-6002 in Buffalo or Western New York?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-6002 is available at Vinyl Sound, an authorized Adcom dealer located in Buffalo, NY. Vinyl Sound serves the Buffalo metro area and greater Western New York region with expert guidance on amplifier selection, distributed audio systems, home theater integration, and speaker matching. Visit vinylsound.com or stop in to discuss whether the GFA-6002 is the right fit for your system.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":53192904343859,"sku":"GFA-6002","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/AdcomGFA-6002StereoPowerAmplifier.png?v=1775096219"},{"product_id":"adcom-gia-275-integrated-amplifier","title":"Adcom GIA-275 Integrated Amplifier","description":"\u003ch1\u003eAdcom GIA-275 Integrated Amplifier\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eGIA-275 Integrated Stereo DAC \/ amplifier supports analog, digital, USB, Bluetooth Input, and features a digital to analog converter. The GIA-275 is a high performance, integrated and compact system designed to let you to play music from your Bluetooth enabled portable devices, play 24 bit\/192kHz high resolution audio from your Apple MAC or Windows systems, connect your flat screen TV through a digital connection or use your legacy analog devices such as a CD player. The GIA-275 is an all-in-one, high-end integrated amplifier that fully supports Bluetooth V4, A2DP and aptX to produce CD quality sound through a wireless connection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gia-275-slide4.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"7e3ba211\" class=\"elementor-element elementor-element-7e3ba211 elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003eSound\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget_type=\"text-editor.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"724dc020\" class=\"elementor-element elementor-element-724dc020 elementor-widget elementor-widget-text-editor\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp\u003eOur integrated amp with Bluetooth is the new generation all-in-one amplifier, combining both amplifier and pre-amp in one. The sound quality of our GIA-275 is remarkable. You’ll get grand sound quality in a small package. Lightweight but heavy power is what we are dealing with here. The GIA-275 has a very high quality converter, which can convert your high resolution digital recording into high quality sound of 24bit\/192kHz, through your speakers.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gia-275-slide5.jpg\"\u003e\u003c\/p\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"287c2352\" class=\"elementor-element elementor-element-287c2352 elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003eConnectivity\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget_type=\"text-editor.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"73b3702\" class=\"elementor-element elementor-element-73b3702 elementor-widget elementor-widget-text-editor\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp\u003eWe opt for going wireless with our Bluetooth connection. Play music from your phone\/tablet\/laptop etc., with hassle free installation. Connect your device with GIA-275 via Bluetooth and enjoy music with click of a button. If you want to connect your speakers, we have a provision for adding your aux to our integrated stereo amp with Bluetooth. You can also play high resolution files from your computer by downloading them on a USB device. Our integrated amp has a USB slot which can play all high resolution digital files through your USB connected to speakers or via Bluetooth on any device.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gia-275-slide1.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"tagline\"\u003eCompact in scale. Expansive in sound.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAdcom GIA-275\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis an integrated amplifier designed for modern systems, combining power, precision, and versatility in a clean, understated form. Delivering\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e75 watts per channel into 8 ohms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e125 watts into 4 ohms\u003c\/strong\u003e, it provides confident control and dynamic headroom that brings music to life with ease.\u003c\/p\u003e\n\u003cp\u003eAt its core, the GIA-275 is built to simplify without compromise. With both analog and digital inputs, a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ebuilt-in Wolfson WM8740 DAC\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBluetooth aptX\u003c\/strong\u003e, and USB audio, it connects seamlessly to everything from traditional sources to TVs and streamers — acting as the central hub of a refined, contemporary system.\u003c\/p\u003e\n\u003cp\u003eSonically, it strikes a compelling balance between clarity and musicality. Bass is tight and well-defined, the midrange remains open and expressive, and the top end carries a smooth, natural extension. The result is a sound that feels composed, engaging, and consistently immersive.\u003c\/p\u003e\n\u003cp\u003eIts compact footprint makes it an ideal choice for smaller spaces, secondary systems, or minimalist setups — without sacrificing the authority and presence expected from a serious amplifier.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gia-275-slide11.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e75 watts per channel (8Ω) \/ 125 watts per channel (4Ω)\u003c\/li\u003e\n\u003cli\u003eBuilt-in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eWolfson WM8740 DAC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor high-quality digital playback\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth v4.0 with aptX\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(CD-quality wireless) \u0026amp; external antenna\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB Audio 2.0\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— compatible with Windows XP\/Vista\/7\/8 \u0026amp; Apple; software upgradeable via mini USB\u003c\/li\u003e\n\u003cli\u003eDual analog inputs (AUX 1 \u0026amp; AUX 2)\u003c\/li\u003e\n\u003cli\u003e2× Digital Coaxial \u0026amp; 2× Digital Optical Inputs\/Outputs\u003c\/li\u003e\n\u003cli\u003eCompact design — fits effortlessly into modern living spaces\u003c\/li\u003e\n\u003cli\u003eStandby power \u0026lt;½ watt for energy efficiency\u003c\/li\u003e\n\u003cli\u003eCompatible with 120VAC \u0026amp; 230VAC \/ 50–60Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (8Ω)\u003c\/td\u003e\n\u003ctd\u003e80W per channel, 20Hz–20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (4Ω)\u003c\/td\u003e\n\u003ctd\u003e120W per channel, 20Hz–20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD + Noise (80W \/ 8Ω)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD + Noise (120W \/ 4Ω)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.7%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e+0 \/ –0.55dB, 10Hz–20kHz @ 1W into 8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDAC Chip\u003c\/td\u003e\n\u003ctd\u003eWolfson WM8740\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth\u003c\/td\u003e\n\u003ctd\u003ev4.0, aptX (CD quality), external antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB\u003c\/td\u003e\n\u003ctd\u003eUSB Audio 2.0 — Windows \u0026amp; Apple compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Inputs\u003c\/td\u003e\n\u003ctd\u003eAUX 1, AUX 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Inputs\u003c\/td\u003e\n\u003ctd\u003e2× Coaxial, 2× Optical, 1× USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Outputs\u003c\/td\u003e\n\u003ctd\u003e2× Coaxial, 2× Optical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby Power\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;½ watt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n\u003ctd\u003e11.8\" × 13.7\" × 7.8\" (30 × 35 × 20 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e6 lbs (2.7 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e8 lbs (3.6 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e120VAC \u0026amp; 230VAC \/ 50–60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"cta\"\u003eThe Adcom GIA-275 delivers more than just convenience — it delivers a complete, confident listening experience in a form that fits effortlessly into modern living spaces.\u003c\/div\u003e\n\u003cp class=\"store-tag\"\u003eAvailable at\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVinyl Sound\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— Buffalo, NY USA\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Adcom GIA-275?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GIA-275 is a compact integrated amplifier and DAC from Adcom, USA, delivering 80 watts per channel into 8 ohms and 120 watts per channel into 4 ohms. It integrates a Wolfson WM8740 DAC supporting up to 192kHz\/24-bit and DSD playback via USB, Bluetooth v4.0 with aptX, two coaxial and two optical digital inputs, two analog RCA inputs, digital outputs, and a front-panel headphone jack — all in a single black anodized aluminum chassis. The GIA-275 is available at Vinyl Sound in Buffalo, NY as an authorized Adcom dealer.\u003c\/p\u003e\n\u003ch3\u003eHow does the Adcom GIA-275 compare to the NAD D 3045, Cambridge Audio CXA61, and Marantz PM6007?\u003c\/h3\u003e\n\u003cp\u003eThe GIA-275 occupies a distinct position in the compact integrated amplifier category. The NAD D 3045 uses a Class D amplifier module rated at 60W into 8 ohms and includes BluOS network streaming with aptX HD Bluetooth — more powerful wireless functionality, but at a higher price with a different sonic character. The Cambridge Audio CXA61 delivers 60W into 8 ohms in a Class A\/B design with Bluetooth aptX and a built-in ESS Sabre DAC, and is widely praised for its musicality; the GIA-275 offers more output power (80W vs 60W) and DSD support. The Marantz PM6007 at 45W per channel is a dedicated analog integrated amplifier without digital inputs or Bluetooth, making it the stronger choice for purely analog systems but less versatile than the GIA-275 for mixed digital and wireless setups. For Buffalo and Western New York listeners, Vinyl Sound carries the GIA-275 as an authorized Adcom dealer.\u003c\/p\u003e\n\u003ch3\u003eDoes the Adcom GIA-275 support DSD playback?\u003c\/h3\u003e\n\u003cp\u003eYes. Via the USB input, the GIA-275 supports DSD-DSF and DFF file formats in addition to high-resolution PCM up to 192kHz and 24-bit, as well as FLAC, WAV, MP3, and other common audio formats. This makes it compatible with high-resolution download libraries and DSD music sources accessed from a connected Mac or Windows computer. DSD playback is available via USB only; the coaxial and optical digital inputs support standard PCM up to their rated resolution.\u003c\/p\u003e\n\u003ch3\u003eWhat Bluetooth codecs does the GIA-275 support and how stable is the wireless connection?\u003c\/h3\u003e\n\u003cp\u003eThe GIA-275 supports Bluetooth v4.0 with A2DP profile and aptX codec, delivering CD-quality wireless audio when paired with any aptX-compatible source device. When connected to a non-aptX source, the standard A2DP stream is used at somewhat lower compression efficiency. The included external antenna is a meaningful advantage over integrated Bluetooth implementations — it significantly extends the stable reception range and reduces dropout risk from walls, interference, or distance, making the GIA-275 a reliable wireless receiver in real-room installations rather than just proximity use.\u003c\/p\u003e\n\u003ch3\u003eCan the Adcom GIA-275 be used to connect a flat-screen TV?\u003c\/h3\u003e\n\u003cp\u003eYes. The GIA-275 accepts any standard digital audio output from a TV — including optical Toslink and coaxial S\/PDIF, which are the two digital output types available on most modern flat-screen televisions. Connect the TV's optical or coaxial digital audio output to any of the GIA-275's matching digital inputs and the Wolfson DAC will handle conversion, delivering the TV's audio through your speakers at full quality. This makes the GIA-275 a clean and capable solution for TV-based listening rooms that also serve as dedicated two-channel music systems.\u003c\/p\u003e\n\u003ch3\u003eIs the Adcom GIA-275 suitable for a desktop or bedroom system?\u003c\/h3\u003e\n\u003cp\u003eYes. At 11.8 inches wide and 7.8 inches tall, with a weight of just 6 lbs., the GIA-275 is among the most compact full-featured integrated amplifiers available. Its combination of 80W per channel, a built-in DAC, Bluetooth with external antenna, a front-panel headphone output, and sub-half-watt standby power consumption makes it well suited to desktop, bedroom, and secondary system environments where a full rack-width component would be impractical. It is equally at home paired with compact bookshelf loudspeakers or used as the heart of a space-conscious dedicated listening setup.\u003c\/p\u003e\n\u003ch3\u003eWhere can I buy the Adcom GIA-275 in Buffalo or Western New York?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GIA-275 is available at Vinyl Sound, an authorized Adcom dealer located in Buffalo, NY. Vinyl Sound serves the Buffalo metro area and greater Western New York region with expert guidance on integrated amplifier selection, source matching, and system setup. Visit vinylsound.com or stop in to experience the GIA-275 firsthand.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":53192907129139,"sku":"GIA-275","price":795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/AdcomGIA-275IntegratedAmplifier_1.png?v=1775096570"},{"product_id":"adcom-gfp-915se-stereo-preamplifier","title":"Adcom GFP-915SE Stereo Preamplifier","description":"\u003cdiv class=\"elementor-element elementor-element-5b775f65 elementor-widget elementor-widget-heading\" data-id=\"5b775f65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch1 class=\"elementor-heading-title elementor-size-default\"\u003eNEW! ADCOM GFP-915SE\u003cbr\u003eHigh-Performance Preamplifier\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-b3b25e7 elementor-widget elementor-widget-heading\" data-id=\"b3b25e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-default\"\u003eNow with Multi-Amp Support and Bluetooth 5.4\u003c\/h2\u003e\n\u003cdiv class=\"elementor-element elementor-element-46cab5b elementor-widget elementor-widget-heading\" data-id=\"46cab5b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003eFlexible Connectivity for Modern Audio Systems\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/GFP-915-ADCOM-01.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-ae16a88 elementor-widget elementor-widget-text-editor\" data-id=\"ae16a88\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp class=\"\" data-start=\"228\" data-end=\"609\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"232\" data-end=\"245\"\u003eGFP-915SE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebuilds on the legacy of the original GFP-915, now reimagined for today’s dynamic audio environments. Designed to support\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"367\" data-end=\"399\"\u003etriple amplifier connections\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evia\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"404\" data-end=\"433\"\u003eUnbalanced Main 1, Main 2\u003c\/strong\u003e, and\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"439\" data-end=\"463\"\u003eBalanced XLR outputs\u003c\/strong\u003e, it offers the freedom to configure complex setups—whether you’re powering multiple zones, integrating a\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"569\" data-end=\"582\"\u003esubwoofer\u003c\/strong\u003e, or bi-amping your system.\u003c\/p\u003e\n\u003cdiv class=\"elementor-element elementor-element-3966148 elementor-widget elementor-widget-heading\" data-id=\"3966148\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003ePrecision Connectivity \u0026amp; Signal Management\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-21b62e5 elementor-widget elementor-widget-text-editor\" data-id=\"21b62e5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp class=\"\" data-start=\"1704\" data-end=\"2037\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1708\" data-end=\"1721\"\u003eGFP-915SE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis engineered for audiophile-grade signal purity and system control. Its\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1795\" data-end=\"1825\"\u003eupgraded software platform\u003c\/strong\u003eprovides smooth input switching and stable operation across analog and digital paths. Advanced output options allow for direct subwoofer connection or multi-amp setups without additional splitters or converters.\u003c\/p\u003e\n\u003cp class=\"\" data-start=\"2039\" data-end=\"2063\"\u003eThe rear panel includes:\u003c\/p\u003e\n\u003cul data-start=\"2064\" data-end=\"2282\"\u003e\n\u003cli class=\"\" data-start=\"2064\" data-end=\"2108\"\u003e\n\u003cp class=\"\" data-start=\"2066\" data-end=\"2108\"\u003e\u003cstrong data-start=\"2066\" data-end=\"2106\"\u003eMain 1 and Main 2 unbalanced outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-start=\"2109\" data-end=\"2166\"\u003e\n\u003cp class=\"\" data-start=\"2111\" data-end=\"2166\"\u003e\u003cstrong data-start=\"2111\" data-end=\"2164\"\u003eBalanced XLR output for low-noise signal delivery\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-start=\"2167\" data-end=\"2217\"\u003e\n\u003cp class=\"\" data-start=\"2169\" data-end=\"2217\"\u003e\u003cstrong data-start=\"2169\" data-end=\"2215\"\u003eRecord out for dedicated recording devices\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-start=\"2218\" data-end=\"2282\"\u003e\n\u003cp class=\"\" data-start=\"2220\" data-end=\"2282\"\u003e\u003cstrong data-start=\"2220\" data-end=\"2280\"\u003eRS232 control port and 12V trigger for system automation\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"\" data-start=\"2284\" data-end=\"2431\"\u003eHoused in a brushed aluminum chassis with intuitive front-panel controls, the GFP-915SE balances premium sound performance with modern convenience.\u003c\/p\u003e\n\u003cp class=\"\" data-start=\"2284\" data-end=\"2431\"\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/GFP-915-ADCOM-02.jpg\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"elementor-element elementor-element-5014b28 elementor-widget elementor-widget-heading\" data-id=\"5014b28\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003eSeamless Source Integration\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-b6b4646 elementor-widget elementor-widget-text-editor\" data-id=\"b6b4646\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp class=\"\" data-start=\"1191\" data-end=\"1298\"\u003eIn addition to its versatile output architecture, the preamplifier offers seamless source integration with:\u003c\/p\u003e\n\u003cul data-start=\"1299\" data-end=\"1514\"\u003e\n\u003cli class=\"\" data-start=\"1299\" data-end=\"1343\"\u003e\n\u003cp class=\"\" data-start=\"1301\" data-end=\"1343\"\u003e\u003cstrong data-start=\"1301\" data-end=\"1322\"\u003eMM\/MC Phono stage\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor vinyl playback\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-start=\"1344\" data-end=\"1404\"\u003e\n\u003cp class=\"\" data-start=\"1346\" data-end=\"1404\"\u003e\u003cstrong data-start=\"1346\" data-end=\"1363\"\u003eBluetooth 5.4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor high-resolution wireless streaming\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-start=\"1405\" data-end=\"1455\"\u003e\n\u003cp class=\"\" data-start=\"1407\" data-end=\"1455\"\u003e\u003cstrong data-start=\"1407\" data-end=\"1433\"\u003eUSB and Optical inputs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor digital sources\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-start=\"1456\" data-end=\"1514\"\u003e\n\u003cp class=\"\" data-start=\"1458\" data-end=\"1514\"\u003e\u003cstrong data-start=\"1458\" data-end=\"1481\"\u003eSeven analog inputs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor a wide range of components\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"\" data-start=\"1516\" data-end=\"1646\"\u003eEvery connection is managed through precise signal routing and low-noise circuitry—ensuring that your system performs at its peak.\u003c\/p\u003e\n\u003cp class=\"\" data-start=\"1516\" data-end=\"1646\"\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/GFP-915-ADCOM-03.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-6b99b6d8 elementor-widget elementor-widget-heading\" data-id=\"6b99b6d8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-heading-title elementor-size-medium\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"271\" data-end=\"284\"\u003eGFP-915SE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the next evolution of ADCOM's renowned preamplifier line. Building on the legacy of the original\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"385\" data-end=\"396\"\u003eGFP-915\u003c\/strong\u003e, the SE version introduces powerful new features for audiophiles who demand greater connectivity, flexibility, and control—without compromising on audio purity.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"tagline\"\u003eControl, clarity, and a pure connection to your music — now with multi-amp support and Bluetooth 5.4.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAdcom GFP-915SE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the next evolution of Adcom's renowned preamplifier line. Building on the legacy of the original GFP-915, the SE version introduces powerful new features for audiophiles who demand greater connectivity, flexibility, and control — without compromising on audio purity.\u003c\/p\u003e\n\u003cp\u003eEngineered with a clean, low-noise signal path, the GFP-915SE preserves the natural character of your music across every source. From delicate acoustic passages to dynamic full-range performances, it remains composed, transparent, and true.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/GFP-915-ADCOM-04.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003eWhat's New in the SE\u003c\/h2\u003e\n\u003ch3\u003eTriple Amplifier Output Support\u003c\/h3\u003e\n\u003cp\u003eDesigned for complex, high-performance setups, the GFP-915SE supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ethree simultaneous amplifier connections\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evia unbalanced Main 1, Main 2, and balanced XLR outputs — ideal for multi-zone systems, subwoofer integration, or bi-amping configurations.\u003c\/p\u003e\n\u003ch3\u003eBluetooth 5.4 with Qualcomm\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQualcomm Bluetooth 5.4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eenables high-resolution wireless streaming with low latency and robust connection stability — bringing modern convenience without sacrificing audio integrity.\u003c\/p\u003e\n\u003ch3\u003eHigh-Resolution Digital Inputs\u003c\/h3\u003e\n\u003cp\u003eUSB and Optical inputs support up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e192kHz \/ 24-bit\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eplayback, ensuring the GFP-915SE is ready for the highest-quality digital sources available.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTriple outputs:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMain 1 (unbalanced), Main 2 (unbalanced), Balanced XLR\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMM\/MC Phono stage\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith RIAA accuracy ±0.25dB (20Hz–20kHz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth 5.4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(Qualcomm) for high-resolution wireless streaming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB \u0026amp; Optical inputs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— up to 192kHz \/ 24-bit\u003c\/li\u003e\n\u003cli\u003e7 analog inputs for comprehensive source management\u003c\/li\u003e\n\u003cli\u003eRecord output, RS232 control port \u0026amp; 12V trigger for system automation\u003c\/li\u003e\n\u003cli\u003eTone controls: ±11.5 dB Bass (20Hz) \/ ±8.5 dB Treble (20kHz)\u003c\/li\u003e\n\u003cli\u003eTHD + Noise: 0.005% (high level) — exceptionally low distortion\u003c\/li\u003e\n\u003cli\u003eS\/N Ratio: ≥100 dB high level \/ ≥95 dB MM \u0026amp; MC\u003c\/li\u003e\n\u003cli\u003eBrushed aluminum chassis with intuitive front-panel controls\u003c\/li\u003e\n\u003cli\u003eCompatible with 120VAC \u0026amp; 230VAC \/ 50–60Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (±0.5dB, line)\u003c\/td\u003e\n\u003ctd\u003e5Hz – 100kHz (high level: 50Hz – 50kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD + Noise (20Hz–20kHz)\u003c\/td\u003e\n\u003ctd\u003e0.005% high level \/ 0.15% MM \/ 0.03% MC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio (A-weighted)\u003c\/td\u003e\n\u003ctd\u003e≥100 dB high level \/ ≥95 dB MM \u0026amp; MC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Sensitivity\u003c\/td\u003e\n\u003ctd\u003e500mV high level \/ 3.5mV MM \/ 25mV MC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e11Ω (high level, MM, MC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRIAA Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.25dB, 20Hz–20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Impedance\u003c\/td\u003e\n\u003ctd\u003e100Ω bypass \u0026amp; main \/ 475Ω tape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Level\u003c\/td\u003e\n\u003ctd\u003e2.0 Vrms (bypass \u0026amp; main) \/ 1.0 Vrms (rec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Output Level\u003c\/td\u003e\n\u003ctd\u003e10.0 Vrms (bypass \u0026amp; main outputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Input (max)\u003c\/td\u003e\n\u003ctd\u003e192kHz \/ 24-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Input (max)\u003c\/td\u003e\n\u003ctd\u003e192kHz \/ 24-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth\u003c\/td\u003e\n\u003ctd\u003eQualcomm 5.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTone Controls\u003c\/td\u003e\n\u003ctd\u003e±11.5 dB Bass (20Hz) \/ ±8.5 dB Treble (20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd\u003e16.9\" × 4.13\" × 14.3\" (430 × 105 × 335 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e15.7 lbs (7.1 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e20 lbs (9.05 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e120VAC – 230VAC \/ 50–60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"note\"\u003e* For complete technical specifications, please refer to the included user manual.\u003c\/p\u003e\n\u003cdiv class=\"cta\"\u003eThe Adcom GFP-915SE is a foundation component — quietly elevating everything around it, and ensuring your system performs with the clarity and control it deserves.\u003c\/div\u003e\n\u003cp class=\"store-tag\"\u003eAvailable at\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVinyl Sound\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— Buffalo, NY USA\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Adcom GFP-915SE?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFP-915SE is a full-featured stereo preamplifier from Adcom, USA, delivering three simultaneous amplifier outputs (unbalanced Main 1, unbalanced Main 2, and balanced XLR), an MM\/MC phono stage, Qualcomm Bluetooth 5.4, USB and Optical digital inputs up to 192kHz\/24-bit, seven analog inputs, and RS232 and 12V trigger system automation ports. It achieves THD + Noise of 0.005% at line level and a signal-to-noise ratio of 100dB or greater. The GFP-915SE is available at Vinyl Sound in Buffalo, NY as an authorized Adcom dealer.\u003c\/p\u003e\n\u003ch3\u003eHow does the Adcom GFP-915SE compare to the NAD C 658, Parasound Halo P 6, and Cambridge Audio CXA61 preamp stage?\u003c\/h3\u003e\n\u003cp\u003eThe GFP-915SE stands apart from all three in its triple simultaneous output architecture, which neither the NAD C 658 nor the Parasound Halo P 6 offers natively. The NAD C 658 is a streaming preamplifier with Dirac Live room correction and BluOS network streaming built in, making it the stronger choice for network audio integration; the GFP-915SE prioritizes analog signal purity and multi-amp flexibility. The Parasound Halo P 6 is a respected two-channel preamplifier with a strong phono stage and bass management, but at a higher price point and without Bluetooth 5.4 or high-resolution digital inputs. The Cambridge Audio CXA61 is an integrated amplifier with a built-in preamp stage rather than a standalone preamplifier, and is not directly comparable in output flexibility. For Buffalo and Western New York buyers seeking a traditional preamplifier with modern connectivity and multi-amp support, Vinyl Sound carries the GFP-915SE for evaluation.\u003c\/p\u003e\n\u003ch3\u003eWhat does triple amplifier output support mean and how do I use it?\u003c\/h3\u003e\n\u003cp\u003eTriple amplifier output support means the GFP-915SE provides three independent output connections that operate simultaneously without any switching: Main 1 (unbalanced RCA), Main 2 (unbalanced RCA), and a balanced XLR output. In a bi-amping configuration, you would connect the balanced XLR to the amplifier driving the high-frequency section of your loudspeaker and one unbalanced output to the amplifier driving the bass section — allowing both amplifiers to receive an identical signal from the preamplifier with no additional splitters or passive Y-adapters in the signal path. In a multi-zone setup, the three outputs can drive separate amplifiers for different rooms or speakers simultaneously. A second unbalanced output can also serve as a dedicated subwoofer feed when connected to a subwoofer amplifier with its own level and crossover controls.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the GFP-915SE and the original GFP-915?\u003c\/h3\u003e\n\u003cp\u003eThe GFP-915SE adds three key upgrades over the original GFP-915: a second unbalanced RCA main output (enabling triple simultaneous amplifier connections where the original offered two), Bluetooth 5.4 via Qualcomm versus Bluetooth 5.0 in the original, and an upgraded software platform for improved input switching and operational stability. Core specifications including frequency response (5Hz to 100kHz), THD + Noise (0.005%), signal-to-noise ratio (100dB or greater), and digital input resolution (192kHz \/ 24-bit) are carried forward from the GFP-915.\u003c\/p\u003e\n\u003ch3\u003eDoes the GFP-915SE support both moving-magnet and moving-coil phono cartridges?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFP-915SE includes an integrated MM\/MC phono stage with separate input sensitivity settings for both cartridge types — 3.5mV for moving-magnet and 25mV for moving-coil. RIAA equalization is accurate to within plus or minus 0.25dB from 20Hz to 20kHz, and the phono stage achieves a signal-to-noise ratio of 95dB or greater for both MM and MC inputs. This makes the GFP-915SE a capable and cost-effective solution for vinyl playback without the need for a separate outboard phono preamplifier.\u003c\/p\u003e\n\u003ch3\u003eCan the GFP-915SE be integrated into a home automation or custom installation system?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFP-915SE includes an RS232 control port for two-way communication with home automation controllers and third-party control systems, as well as a 12V trigger output that can be used to switch compatible power amplifiers on and off in sync with the preamplifier. These features make the GFP-915SE well suited for custom installation environments where centralized system control is required, including dedicated home theater rooms and whole-home audio systems.\u003c\/p\u003e\n\u003ch3\u003eWhere can I buy the Adcom GFP-915SE in Buffalo or Western New York?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFP-915SE is available at Vinyl Sound, an authorized Adcom dealer located in Buffalo, NY. Vinyl Sound serves the Buffalo metro area and greater Western New York region with expert guidance on preamplifier selection, system integration, and multi-amp setup. Visit vinylsound.com or stop in to experience the GFP-915SE in person.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":53192918794547,"sku":"GFP-915","price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/AdcomGFP-915SEStereoPreamplifier_1.png?v=1775097739"},{"product_id":"adcom-gfa-555ms-stereo-power-amplifier","title":"Adcom GFA-555ms Stereo Power Amplifier","description":"\u003cdiv class=\"elementor-element elementor-element-8c1c7bf elementor-widget elementor-widget-woocommerce-product-title elementor-page-title elementor-widget-heading\" data-id=\"8c1c7bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"woocommerce-product-title.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch1 class=\"product_title entry-title elementor-heading-title elementor-size-default\"\u003eAdcom GFA-555ms Power Amplifier\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-1a133254 elementor-widget elementor-widget-heading\" data-id=\"1a133254\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003cspan class=\"elementor-heading-title elementor-size-medium\"\u003eFor those who desire the power finesse in a two-channel amplifier, look no further than GFA-555ms. The GFA-555ms amplifier can drive a very broad range of loudspeakers, including those with very low impedances, at sustained high-power levels, even when the impedances are highly reactive.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003cspan class=\"elementor-heading-title elementor-size-medium\"\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide1.jpg\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-element elementor-element-4d707bdd elementor-widget elementor-widget-heading\" data-id=\"4d707bdd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003eDynamic Sound\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-6489b0f2 elementor-widget elementor-widget-text-editor\" data-id=\"6489b0f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003eGFA-555ms runs on 200 W into 4 ohms, takes both Unbalanced and Balanced inputs and drives your speakers with 40+40 Watts of high performance, ultra low distortion power output all from a neat package. We have engineered an uncompromised circuit design that delivers ultra-low distortion and a crisp dynamic sound. It all adds up to a startlingly vivid and highly impactful musical performance that will put more energy into your loudspeakers as well as control them like never before.\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide2.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-element elementor-element-63bb8786 elementor-widget elementor-widget-heading\" data-id=\"63bb8786\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003eLow Distortion\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-31eadb2f elementor-widget elementor-widget-text-editor\" data-id=\"31eadb2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003eGreat care was taken to insure that distortion in the amplifier would remain extremely low, particularly when driving these highly reactive loads in which the phase angles of the voltageand the current are substantially different.\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide7.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2\u003eAdcom GFA-555ms Stereo Power Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAdcom GFA-555ms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebuilds on one of audio's most respected amplifier legacies, reimagined for greater control, lower noise, and a more revealing presentation. Designed for those who demand both authority and finesse, it delivers\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehigh-current performance\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith the kind of composure that lets your system breathe effortlessly.\u003c\/p\u003e\n\u003cp\u003eWith\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e200 watts per channel into 8 ohms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e325 watts into 4 ohms\u003c\/strong\u003e, the GFA-555ms offers substantial headroom, driving even the most demanding speakers with ease. Its updated circuitry improves resolution and transparency, allowing finer details, deeper textures, and a more expansive soundstage to emerge.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide8.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eWhat defines the GFA-555ms is its balance. Bass is powerful yet controlled, the midrange is open and dimensional, and the highs extend cleanly without harshness. Whether you're listening at low levels or pushing the system hard, it maintains a sense of grip and clarity that keeps everything in focus.\u003c\/p\u003e\n\u003cp\u003eBuilt with a robust power supply and Adcom's signature no-nonsense engineering, the GFA-555ms is as reliable as it is capable — equally at home in a dedicated stereo system or a high-performance home theatre.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555ms-slide12.jpg\"\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e200W per channel (8 ohms) \/ 325W per channel (4 ohms)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— massive headroom for any speaker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridgeable to 400W mono (8 ohms)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— for high-power single-zone or subwoofer duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-current design\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor demanding, low-impedance speaker loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved circuitry\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor greater transparency, resolution, and detail retrieval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide dynamic range\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith excellent grip and headroom at all listening levels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual voltage compatible\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— 120VAC \u0026amp; 230VAC \/ 50–60Hz for worldwide use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegendary Adcom reliability\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith classic, no-nonsense build quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power – 8 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e125W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power – 4 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBridged Mono Power – 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10Hz – 20kHz, +0 \/ −0.25dB (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Bandwidth (−3dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10Hz – 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.38V rms (125W into 8 ohms) \/ 123mV rms (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;400 (20Hz – 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120VAC \u0026amp; 230VAC \/ 50–60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Dimensions (H × W × D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6\" × 17\" × 12.5\" (152 × 432 × 318 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28.6 lbs. (13 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e33 lbs. (15 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e* For complete technical documentation, please refer to the official Adcom GFA-555ms user manual included with the unit or available upon request.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Adcom GFA-555ms?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-555ms is a Class A\/B high-current stereo power amplifier from Adcom, USA, delivering 125 watts per channel into 8 ohms and 200 watts per channel into 4 ohms, with a bridged mono output of 400 watts into 8 ohms. It accepts balanced XLR and unbalanced RCA inputs, features a damping factor exceeding 400, and maintains ultra-low distortion into reactive and low-impedance loudspeaker loads. The GFA-555ms is the current entry point into Adcom's GFA-555 lineage and is available at Vinyl Sound in Buffalo, NY as an authorized Adcom dealer.\u003c\/p\u003e\n\u003ch3\u003eHow does the Adcom GFA-555ms compare to the NAD C 298, Emotiva XPA-2 Gen3, and PS Audio Sprout100?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-555ms occupies a distinct position among these alternatives. The NAD C 298 uses a Purifi Eigentakt Class D module rated at 185W into 8 ohms and excels in efficiency and measured noise performance, but uses a switching power supply topology that differs fundamentally from the GFA-555ms's linear Class A\/B design. The Emotiva XPA-2 Gen3 delivers 300W into 8 ohms at a higher price but in a larger chassis; for buyers who do not require that power level, the GFA-555ms offers a more compact and cost-effective solution rooted in a legendary design lineage. The PS Audio Sprout100 is a compact integrated amplifier rated at 100W into 4 ohms — a different product category — but FutureAudiophile noted the GFA-555ms's fullness and dynamic range as meaningfully superior during direct comparison. For Buffalo and Western New York buyers seeking a traditional high-current amplifier with proven pedigree, Vinyl Sound carries the GFA-555ms for in-person evaluation.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the Adcom GFA-555ms and the GFA-555se?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-555ms and GFA-555se share the same Nelson Pass-inspired design lineage and Class A\/B high-current topology, but differ in power output and feature set. The GFA-555ms delivers 125W into 8 ohms and 200W into 4 ohms, bridges to 400W mono, and weighs 28.6 lbs. — making it the more compact and accessible option. The GFA-555se delivers 200W into 8 ohms and 300W into 4 ohms, bridges to 600W mono, includes an upgraded internal component specification with ultra-low ESR capacitors, and achieves a higher damping factor of 900 or greater versus the GFA-555ms's 400-plus. Buyers who need more headroom for large or low-sensitivity loudspeakers should consider the GFA-555se; those building a compact, high-performance two-channel system will find the GFA-555ms an outstanding choice at its price point.\u003c\/p\u003e\n\u003ch3\u003eCan the Adcom GFA-555ms drive difficult or low-impedance loudspeakers?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-555ms was developed with specific attention to driving loudspeakers that present highly reactive loads — where the phase angles between voltage and current are substantially different — at sustained high power levels. This is the condition under which many amplifiers compress or distort, and it was a central engineering priority for the GFA-555 family from the original 1985 design onward. The GFA-555ms maintains stable, low-distortion performance across a broad range of speaker loads, including those with impedances that dip below 8 ohms across portions of their frequency response.\u003c\/p\u003e\n\u003ch3\u003eDoes the Adcom GFA-555ms support bridged mono operation?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-555ms bridges to 400 watts mono into 8 ohms, making it a strong candidate for dedicated subwoofer amplification or for users who want to run a pair of GFA-555ms amplifiers as monoblocks for a high-power two-channel system. A rear-panel switch enables bridged operation; the included instruction manual should be consulted to confirm switch positions and minimum load impedance requirements before operating in bridged mode.\u003c\/p\u003e\n\u003ch3\u003eWhat preamplifiers pair well with the Adcom GFA-555ms?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-555ms works seamlessly with any preamplifier offering balanced XLR or unbalanced RCA outputs. Natural pairing options include the matching Adcom GFP-915 stereo preamplifier, which provides a balanced XLR output for a low-noise connection between the two components, as well as the NAD C 658 streaming preamplifier, the Parasound Halo P 6, and the Anthem STR Preamplifier for more advanced home theater integration. The GFA-555ms's 100,000-ohm input impedance is compatible with essentially all consumer and professional source components available today.\u003c\/p\u003e\n\u003ch3\u003eWhere can I buy the Adcom GFA-555ms in Buffalo or Western New York?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-555ms is available at Vinyl Sound, an authorized Adcom dealer located in Buffalo, NY. Vinyl Sound serves the Buffalo metro area and greater Western New York region with expert guidance on amplifier selection, speaker matching, and full system integration. Visit vinylsound.com or stop in to hear the GFA-555ms in person.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":53192936980787,"sku":"GFA-555ms","price":1549.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/AdcomGFA-555msStereoPowerAmplifier.png?v=1775099038"},{"product_id":"adcom-gfa-555se-stereo-power-amplifier","title":"Adcom GFA-555se Stereo Power Amplifier","description":"\u003cdiv data-widget_type=\"heading.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"35df84f0\" class=\"elementor-element elementor-element-35df84f0 elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch1 class=\"elementor-heading-title elementor-size-default\"\u003eADCOM GFA-555se Power Amplifier\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"270ba44c\" class=\"elementor-element elementor-element-270ba44c elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003cspan class=\"elementor-heading-title elementor-size-medium\"\u003eThe classic award winning amplifier design of the original GFA-555mkII has been reborn. The Adcom GFA-555 represents the most advanced thinking in audio amplifier design. It offers exceptional value and superior performance at a reasonable price. Being innovative is what keeps us going strong and achieving great things. Whether it's our iconic high current amplifiers or our cutting-edge digital processors, ADCOM components never fail to impress even the toughest crowds. As we keep pushing for better quality and performance, our components have scooped up more than 25 Product of the Year and Special Recognition awards from Audio Video International. On top of that, we've snagged 3 Diapason D’Or Awards, 7 Consumer Electronics Show Design and Engineering Awards, and we've been featured on Stereophile’s “Recommended Components” list 70+ times since 1988!\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003cspan class=\"elementor-heading-title elementor-size-medium\"\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555se-slide7.jpg\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"45b639a2\" class=\"elementor-element elementor-element-45b639a2 elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003eLegacy\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget_type=\"text-editor.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"171b0080\" class=\"elementor-element elementor-element-171b0080 elementor-widget elementor-widget-text-editor\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp\u003eGFA-555se power amplifier represents the pinnacle of ADCOM’s audio engineering. This Nelson Pass design broke ground when it came out in the 80’s, getting rave reviews and providing tank-like reliability at a decent price. That these audio power amplifiers are still much in demand after so much time is a strong testament to their value and durability.\u003c\/p\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"4bdd3f77\" class=\"elementor-element elementor-element-4bdd3f77 elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555se-slide8.jpg\"\u003e\u003c\/h2\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003eBetter Sound Delivery\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget_type=\"text-editor.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"43bf868f\" class=\"elementor-element elementor-element-43bf868f elementor-widget elementor-widget-text-editor\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003eWe have worked long and hard to ensure that the GFA-555se power amplifier improves upon its original eminent version in key areas, delivering even better performance. Externally, the chassis footprint and front panel design are identical to the original. Internally, all circuitry has been upgraded to meet ETL\/ETLc, FCC, LVD and CE\/EMC requirements using UL approved FR-4 printed circuit boards. High performance component selections include ultra low ESR electrolytic capacitors. The result of these improvements is lower distortion, better dynamic range, improved damping factor and greater stability and separation of individual instruments on the sound stage.\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555se-slide12.jpg\"\u003e\u003c\/h2\u003e\n\u003ch2\u003eAdcom GFA-555se Stereo Power Amplifier\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eA legend — refined for a new generation.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAdcom GFA-555se\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecarries forward the legacy of one of the most iconic amplifiers in hi-fi history, reengineered for greater transparency, control, and musical refinement. Designed to deliver effortless power with precision, it brings a sense of scale and authority that transforms any listening experience.\u003c\/p\u003e\n\u003cp\u003eProducing\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e200 watts per channel into 8 ohms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e300 watts into 4 ohms\u003c\/strong\u003e, the GFA-555se offers substantial headroom and the ability to drive even the most demanding speakers with confidence. Its high-current design ensures stability and control, maintaining clarity and composure across the entire frequency range.\u003c\/p\u003e\n\u003cp\u003eWhat sets the 555se apart is its balance of strength and subtlety. Bass is deep and commanding, the midrange is open and expressive, and the highs extend with a smooth, natural ease. The result is a presentation that feels both powerful and refined — capable of revealing detail without ever sounding forced.\u003c\/p\u003e\n\u003cp\u003eWith upgraded internal components, balanced XLR inputs, and a modernized circuit design, the GFA-555se builds on its heritage while elevating performance to meet contemporary high-fidelity expectations.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-555se-slide1.jpg\"\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e200W per channel (8 ohms) \/ 300W per channel (4 ohms)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— authoritative headroom for any speaker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridgeable to 600W mono (8 ohms)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— maximum power for single-channel or subwoofer applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamping factor ≥900\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(20Hz–20kHz) — exceptional speaker control and bass precision\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced (XLR) and unbalanced (RCA) inputs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— flexible integration with any preamplifier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-wide power bandwidth\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— 1.7Hz to 100kHz (−3dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual voltage compatible\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— 120VAC \u0026amp; 230VAC \/ 50–60Hz for worldwide use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpgraded internals\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— modernized circuit design with enhanced clarity and refinement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust build quality\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— classic Adcom reliability, built to last\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"8\" border=\"1\" style=\"width: 100%; height: 391.875px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 37.8096%; height: 19.5938px;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"width: 55.4046%; height: 19.5938px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 39.1875px;\"\u003e\u003cstrong\u003eOutput Power – 8 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 39.1875px;\"\u003e200W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 39.1875px;\"\u003e\u003cstrong\u003eOutput Power – 4 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 39.1875px;\"\u003e300W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 19.5938px;\"\u003e\u003cstrong\u003eBridged Mono Power – 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 19.5938px;\"\u003e600W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 19.5938px;\"\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 19.5938px;\"\u003e10Hz – 20kHz, +0 \/ −0.25dB (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower Bandwidth (−3dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 19.5938px;\"\u003e1.7Hz – 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 39.1875px;\"\u003e\u003cstrong\u003eInput Impedance – Unbalanced (RCA)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 39.1875px;\"\u003e100k ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 39.1875px;\"\u003e\u003cstrong\u003eInput Impedance – Balanced (XLR)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 39.1875px;\"\u003e10k ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 39.1875px;\"\u003e\u003cstrong\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 39.1875px;\"\u003e1.75V rms (200W into 8 ohms) \/ 130mV rms (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 19.5938px;\"\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 19.5938px;\"\u003e≥900 (20Hz – 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 19.5938px;\"\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 19.5938px;\"\u003e120VAC \u0026amp; 230VAC \/ 50–60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 39.1875px;\"\u003e\u003cstrong\u003eMaximum Dimensions (H × W × D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 39.1875px;\"\u003e7½' × 12½' × 17' (191 × 318 × 432 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 19.5938px;\"\u003e36 lbs. (16.3 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 37.8096%; height: 19.5938px;\"\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.4046%; height: 19.5938px;\"\u003e39 lbs. (18 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Adcom GFA-555se?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-555se is a stereo power amplifier from Adcom, USA, delivering 200 watts per channel into 8 ohms and 300 watts per channel into 4 ohms, with a damping factor of 900 or greater and a power bandwidth of 1.7Hz to 100kHz. It is the modernized evolution of the original Nelson Pass-designed GFA-555, featuring upgraded internal components for lower distortion (0.003%), higher signal-to-noise ratio (110dB+), and balanced XLR inputs alongside unbalanced RCA. The GFA-555se is available at Vinyl Sound in Buffalo, NY as an authorized Adcom dealer.\u003c\/p\u003e\n\u003ch3\u003eHow does the Adcom GFA-555se compare to the NAD C 298, Emotiva XPA-2 Gen3, and Parasound Halo A 23+?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-555se occupies a distinct position among these competitors. The NAD C 298 uses a Purifi Eigentakt Class D module rated at 185W into 8 ohms, offering exceptional measured noise performance and efficiency in a lighter chassis, but operates on a fundamentally different topology than the GFA-555se's traditional linear high-current Class A\/B design. The Emotiva XPA-2 Gen3 delivers 300W into 8 ohms at a similar price but with a lower damping factor and no balanced input stage as refined as the GFA-555se's differential XLR circuit. The Parasound Halo A 23+ offers 160W into 8 ohms in a high-bias Class A\/B design with a strong reputation for midrange finesse, but at notably higher cost and lower output power. For Buffalo and Western New York buyers who want proven high-current authority rooted in a legendary design lineage, Vinyl Sound carries the GFA-555se for in-person evaluation.\u003c\/p\u003e\n\u003ch3\u003eWho originally designed the Adcom GFA-555 and why does it matter?\u003c\/h3\u003e\n\u003cp\u003eThe original GFA-555 was designed by Nelson Pass, who is widely considered one of the most significant amplifier engineers in hi-fi history and who later founded Pass Laboratories. Pass brought to the GFA-555 the same high-current, direct-coupled, low-feedback circuit philosophy that defines his own amplifier designs — resulting in an amplifier that, at its price, offered a soundstage stability and dynamic openness that had previously cost many times more. The GFA-555se preserves that foundational architecture while adding updated components and certifications, making it a direct continuation of one of the most respected engineering lineages in the amplifier category.\u003c\/p\u003e\n\u003ch3\u003eWhat improvements does the GFA-555se make over the original GFA-555?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-555se achieves substantially lower distortion than the original — 0.003% versus approximately 0.04% — and raises the signal-to-noise ratio from around 101.5dB at 1 watt to over 110dB at full 200-watt output. All internal circuitry has been updated to meet current ETL\/ETLc, FCC, LVD, and CE\/EMC certification standards, using UL-approved FR-4 printed circuit boards and ultra-low ESR electrolytic capacitors throughout. The GFA-555se also adds balanced XLR inputs, which the original did not offer, along with dual voltage compatibility for international use. The chassis footprint and front panel styling remain true to the original design.\u003c\/p\u003e\n\u003ch3\u003eCan the Adcom GFA-555se drive difficult or low-sensitivity loudspeakers?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-555se was designed specifically for the high-current demands of difficult loudspeaker loads, and its damping factor exceeding 900 provides exceptional control over reactive and low-impedance speaker systems. It is a particularly well-documented match for planar-magnetic speakers such as Magnepan LRS and similar designs, where high current delivery and a low output impedance are essential for stable, full-range performance. The amplifier delivers its full rated power into 4-ohm loads as well as 8-ohm loads, with both channels driven simultaneously.\u003c\/p\u003e\n\u003ch3\u003eDoes the Adcom GFA-555se support bridged mono operation?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-555se is bridgeable to mono, delivering 600 watts into 8 ohms in that configuration. Bridged mono mode is well suited to driving a high-excursion subwoofer, a large center channel loudspeaker, or any single-channel application requiring maximum output from a single chassis. A rear-panel selector switch enables bridged operation; consulting the included instruction manual before switching modes is recommended, as the unit's default switch position should be verified prior to first use.\u003c\/p\u003e\n\u003ch3\u003eWhere can I buy the Adcom GFA-555se in Buffalo or Western New York?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-555se is available at Vinyl Sound, an authorized Adcom dealer located in Buffalo, NY. Vinyl Sound serves audiophiles across the Buffalo metro area and greater Western New York with expert guidance on amplifier selection, speaker pairing, and system setup. Visit vinylsound.com or stop in to hear the GFA-555se in person.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":53192945271091,"sku":"GFA-555se","price":1899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/AdcomGFA-555seStereoPowerAmplifier.png?v=1775099179"},{"product_id":"adcom-gfa-565se-stereo-power-amplifier","title":"Adcom GFA-565se Stereo Power Amplifier","description":"\u003ch1\u003eAdcom GFA-565se Stereo Power Amplifier at Vinyl Sound Buffalo, NY\u003c\/h1\u003e\n\n\u003cp\u003eThe GFA-565se is a high-current stereo power amplifier from Adcom (USA), available at Vinyl Sound in Buffalo, New York. A compact sibling of the flagship GFA-575se, it delivers \u003cstrong\u003e250 watts per channel into 8 ohms\u003c\/strong\u003e and \u003cstrong\u003e350 watts per channel into 4 ohms\u003c\/strong\u003e unconditionally into any loudspeaker load, with a bridged mono output of 700 watts into 8 ohms for single-channel applications. Its power supply is built around a 72,000µF filter capacitance reservoir fed by a generously sized transformer, enabling an extraordinary \u003cstrong\u003edamping factor exceeding 800\u003c\/strong\u003e across 20Hz to 20kHz. Featuring balanced XLR and unbalanced RCA inputs with gold-plated brass RCA jacks and Teflon insulators, the GFA-565se has been reviewed by HomeTheaterHifi.com (March 2024) and Stereo Times (August 2025), with both publications recognizing it as a high-performing amplifier that delivers exceptional value relative to its asking price. For audiophiles and music enthusiasts in Buffalo and Western New York seeking authoritative, high-current amplification, Vinyl Sound is an authorized Adcom dealer.\u003c\/p\u003e\n\n\u003ch2\u003eHigh-Current Drive for Demanding Speaker Loads\u003c\/h2\u003e\n\u003cp\u003eThe GFA-565se was engineered around a central premise: full rated power must be available unconditionally, into any loudspeaker load, without compromise. Its power supply draws on a generously sized transformer and a 72,000µF filter capacitance reservoir, providing the energy reserve needed to follow even the most demanding musical transients with complete accuracy. The amplifier features both balanced and unbalanced power stages, delivering a high level of noise rejection and reduced transient distortion. Critically, the GFA-565se also supports DC amplification capability, meaning it imposes no artificial low-frequency rolloff — peak bass energy is reproduced without restriction, and the full dynamic range of the program material is conveyed exactly as recorded. The damping factor exceeding 800 translates directly into precise, authoritative woofer control that stays composed across all listening levels.\u003c\/p\u003e\n\n\u003ch2\u003ePremium Signal Path and Durable Construction\u003c\/h2\u003e\n\u003cp\u003eEvery point of signal entry in the GFA-565se reflects Adcom's commitment to signal integrity. Gold-plated brass RCA input jacks with Teflon insulators minimize contact resistance and dielectric losses at the input stage, ensuring the amplifier receives the cleanest possible signal from your preamplifier. The front panel is crafted from heavy-gauge anodized aluminum extrusion, while the chassis, top cover, and rear panel are heavy-gauge painted and baked steel — a level of physical construction rarely encountered at this price point. A front-panel thermal overload LED provides real-time safety monitoring, and dual voltage compatibility (120VAC and 230VAC) allows for flexible international installation.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e250W per Channel (8 Ohms) \/ 350W per Channel (4 Ohms):\u003c\/strong\u003e Unconditional full-power delivery into any loudspeaker load, with both channels driven simultaneously.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBridgeable to 700W Mono (8 Ohms):\u003c\/strong\u003e Maximum single-channel output for dedicated subwoofer or mono amplification applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e72,000µF Power Supply Filter Capacitance:\u003c\/strong\u003e Massive energy reservoir for instantaneous transient demands and sustained high-current delivery without voltage sag.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDamping Factor Greater Than 800:\u003c\/strong\u003e Exceptional loudspeaker control across 20Hz to 20kHz — one of the highest damping factors available in any stereo power amplifier at this price.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBalanced XLR and Unbalanced RCA Inputs:\u003c\/strong\u003e Compatible with professional and consumer preamplifiers; balanced inputs provide superior noise rejection over long cable runs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGold-Plated Brass RCA Jacks with Teflon Insulators:\u003c\/strong\u003e Premium signal integrity at the input stage, minimizing contact resistance and dielectric losses.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC Amplification Capability:\u003c\/strong\u003e No low-frequency rolloff imposed by the amplifier — unrestricted delivery of peak-bass energy and full dynamic range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Wide Power Bandwidth:\u003c\/strong\u003e 5Hz to 100kHz (-3dB) ensures no audible bandwidth limitations are introduced under any listening condition.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFront-Panel Thermal Overload LED:\u003c\/strong\u003e Real-time safety monitoring for thermal fault conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Voltage Compatible:\u003c\/strong\u003e 120VAC and 230VAC \/ 50-60Hz for flexible worldwide installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Gauge Anodized Aluminum and Baked Steel Chassis:\u003c\/strong\u003e Built for decades of reliable service in home audio and custom installation environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Power (8 Ohms, Stereo)\u003c\/td\u003e\n\u003ctd\u003e250W per channel (both channels driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Power (4 Ohms, Stereo)\u003c\/td\u003e\n\u003ctd\u003e350W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBridged Mono Output (8 Ohms)\u003c\/td\u003e\n\u003ctd\u003e700W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e10Hz to 20kHz, +0 \/ -0.25dB (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Bandwidth (-3dB)\u003c\/td\u003e\n\u003ctd\u003e5Hz to 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e100,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Sensitivity\u003c\/td\u003e\n\u003ctd\u003e130mV RMS (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDamping Factor\u003c\/td\u003e\n\u003ctd\u003eGreater than 800 (20Hz to 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Supply Filter Capacitance\u003c\/td\u003e\n\u003ctd\u003e72,000µF\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Connectors\u003c\/td\u003e\n\u003ctd\u003eGold-plated brass RCA with Teflon insulators; balanced XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower Requirements\u003c\/td\u003e\n\u003ctd\u003e120VAC and 230VAC \/ 50-60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd\u003e7.25\" x 17\" x 14.19\" (185 x 432 x 360 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e51 lbs. (23 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e55 lbs. (25 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChassis\u003c\/td\u003e\n\u003ctd\u003eHeavy-gauge anodized aluminum front panel; painted and baked steel chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eAwards and Critical Recognition\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eReviewed by HomeTheaterHifi.com, March 2024 — described as a stellar product that delivers far more than expected for its price point\u003c\/li\u003e\n  \u003cli\u003eReviewed by Stereo Times, August 2025 — praised for punchy bass, solid dynamics, and musical engagement across genres\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is the Adcom GFA-565se?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-565se is a high-current stereo power amplifier from Adcom, USA, delivering 250 watts per channel into 8 ohms and 350 watts per channel into 4 ohms with both channels driven simultaneously. It features a 72,000µF power supply, a damping factor exceeding 800, balanced XLR and unbalanced RCA inputs with gold-plated brass RCA jacks, and DC amplification capability for unrestricted low-frequency delivery. The GFA-565se is available at Vinyl Sound in Buffalo, NY as an authorized Adcom dealer.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Adcom GFA-565se compare to the Parasound Halo A 23+, NAD C 298, and Emotiva XPA-2 Gen3?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-565se delivers more output power than all three at its price point. The Parasound Halo A 23+ offers 160W into 8 ohms and 240W into 4 ohms with a high-bias Class A\/B design and is highly regarded for midrange refinement, but provides substantially less raw power than the GFA-565se. The NAD C 298 uses a Purifi Eigentakt Class D module, rated at 185W into 8 ohms, and excels in efficiency and measured noise performance, but operates on a fundamentally different topology than the GFA-565se's linear high-current design. The Emotiva XPA-2 Gen3 delivers 300W into 8 ohms at a similar price but has a lower damping factor and does not match the GFA-565se's 72,000µF power supply reserve. For Buffalo and Western New York audiophiles who prioritize high-current authority and unconditional speaker load stability, Vinyl Sound carries the GFA-565se for direct comparison.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does a damping factor greater than 800 mean in practice?\u003c\/h3\u003e\n\u003cp\u003eDamping factor is the ratio of the loudspeaker's nominal impedance to the amplifier's output impedance, and it measures how effectively the amplifier can stop a woofer cone from moving once the signal demands it. A damping factor above 800 means the GFA-565se's output impedance is extraordinarily low relative to the speaker load, giving it exceptional ability to control woofer motion — particularly at bass frequencies where cone overshoot can blur transients and reduce definition. In practice, listeners typically describe this as tighter, faster bass with improved pitch definition and dynamic precision compared to amplifiers with lower damping factors.\u003c\/p\u003e\n\n\u003ch3\u003eCan the Adcom GFA-565se be used as a mono amplifier?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-565se is bridgeable to mono, delivering 700 watts into 8 ohms in that configuration. Bridged mono mode is well suited to powering a high-excursion subwoofer, a large center channel speaker in an active home theater setup, or any single-channel application requiring maximum output. A rear-panel switch enables bridged operation, and the amplifier's instruction manual should be consulted prior to switching modes, as the unit ships with the rear selector defaulting to the bridged position.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is DC amplification capability and why does it matter?\u003c\/h3\u003e\n\u003cp\u003eDC amplification capability means the GFA-565se does not use an input coupling capacitor or high-pass filter to artificially roll off frequencies below the audible range. The practical result is that the amplifier reproduces the full energy content of the signal without limiting peak-bass delivery or introducing phase anomalies in the low-frequency region. For listeners using loudspeakers with extended low-frequency response or powered subwoofer systems, DC capability ensures the amplifier is never the limiting factor in bass dynamics or extension.\u003c\/p\u003e\n\n\u003ch3\u003eWhat preamplifiers pair well with the Adcom GFA-565se?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-565se pairs naturally with the matching Adcom GFP-915 stereo preamplifier, which provides balanced XLR outputs for a fully balanced signal path between the two components. Other strong pairing options include the Anthem STR Preamplifier for audiophile home theater use, the NAD C 658 streaming preamplifier for a versatile digital source front end, and the Parasound Halo P 6 for a well-matched two-channel separates system. The GFA-565se's 100,000-ohm input impedance is compatible with essentially any consumer or professional preamplifier available.\u003c\/p\u003e\n\n\u003ch3\u003eWhere can I buy the Adcom GFA-565se in Buffalo or Western New York?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-565se is available at Vinyl Sound, an authorized Adcom dealer located in Buffalo, NY. Vinyl Sound serves the Buffalo metro area and greater Western New York region with expert guidance on amplifier selection, speaker matching, and system integration. Visit vinylsound.com or come in to hear the GFA-565se in person.\u003c\/p\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":53192948121907,"sku":"GFA-565se","price":2099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/AdcomGFA-565seStereoPowerAmplifier_1.png?v=1775099479"},{"product_id":"adcom-gfa-585se-stereo-power-amplifier","title":"Adcom GFA-585se Stereo Power Amplifier","description":"\u003cdiv data-widget_type=\"woocommerce-product-title.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"6dafbff9\" class=\"elementor-element elementor-element-6dafbff9 elementor-widget elementor-widget-woocommerce-product-title elementor-page-title elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2\u003eAdcom GFA-585se Stereo Power Amplifier\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eEnormous power. Impeccable quality. Extraordinary value.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAdcom GFA-585se\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance stereo power amplifier built to deliver authority, precision, and musical transparency in equal measure. A pure\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eClass A\/B design\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith parallel-driven topology, it delivers\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e450 watts per channel into 8 ohms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— and the ability to drive speaker loads all the way down to 2 ohms with complete stability and composure.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-585se-slide1.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eEvery component inside the GFA-585se was put under the microscope during development — refined and upgraded to create a more capable, more revealing version of an already respected amplifier. The result is lower distortion, better dynamic range, improved damping factor, and greater stability and separation of individual instruments across the soundstage. Ultra-low ESR electrolytic capacitors and UL-approved FR-4 printed circuit boards reflect the same uncompromising approach applied throughout.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-585se-slide2.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eAt the core of the GFA-585se's power delivery are\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e14 pairs of TO-3-type metal-cased bipolar output transistors per channel\u003c\/strong\u003e, arranged in a triple-Darlington configuration. This topology ensures very efficient power delivery to reactive loads — regardless of the phase angle between voltage and current — making the GFA-585se one of the most speaker-friendly high-power amplifiers available at any price.\u003c\/p\u003e\n\u003cp\u003eSonically, the 585se strikes a compelling balance between impact and finesse. Bass is deep and controlled, the midrange is open and expressive, and the highs extend smoothly with natural detail. The result is a presentation that feels powerful yet refined, with a wide, stable soundstage that holds together at any volume level.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-585se-slide4.jpg\"\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e450W per channel (8 ohms) \/ 600W per channel (4 ohms)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— massive, headroom-rich power output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridgeable to 1000W mono (8 ohms)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— maximum output for single-channel or subwoofer applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrives loads down to 2 ohms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— unconditional stability with any loudspeaker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50+ amps peak output current\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— for instantaneous transient demands on complex, reactive loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePure Class A\/B, parallel-driven topology\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— high efficiency with audiophile-grade linearity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14 pairs of TO-3 bipolar output transistors per channel\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— triple-Darlington configuration for robust, clean power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced (XLR) \u0026amp; unbalanced (RCA) inputs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— compatible with professional and consumer preamplifiers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-low ESR electrolytic capacitors\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— reduced distortion, improved dynamic range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12V trigger output\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— for integrated system automation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimit protection \u0026amp; thermal protection circuits\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— with front-panel LED indicators for safe operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eETL\/ETLc, FCC, LVD and CE\/EMC certified\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— meets international safety and compliance standards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-gauge anodized aluminum front panel; painted \u0026amp; baked steel chassis\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— built for decades of reliable service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power – 8 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e450W per channel (both channels driven, \u0026lt;0.05% THD, 20Hz–20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power – 4 Ohms (Stereo)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600W per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBridged Mono Power – 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak Output Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50+ amperes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Speaker Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 ohms (stereo); 4 ohms recommended (bridged)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTHD (Total Harmonic Distortion)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.05% (full power, both channels driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmplifier Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePure Class A\/B, parallel-driven\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Transistors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14 pairs TO-3 bipolar (per channel), triple-Darlington configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Connectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBalanced XLR; Unbalanced RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrigger\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12V \/ 100mA output (3.5mm jack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePolarity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-inverting (polarity correct)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCB Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL-approved FR-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eETL\/ETLc, FCC, LVD, CE\/EMC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Dimensions (H × W × D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10¾' × 17' × 19¾' (273 × 432 × 502 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~70 lbs. (32 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e87 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-gauge anodized aluminum front panel; painted \u0026amp; baked steel chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOutput relay (short circuit \/ DC), thermal protection — both with front-panel LED indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e* For complete technical documentation, please refer to the official Adcom GFA-585se user manual included with the unit or available upon request.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Adcom GFA-585se?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-585se is a stereo power amplifier from Adcom, USA, delivering 450 watts per channel into 8 ohms and 600 watts per channel into 4 ohms via a pure Class A\/B, parallel-driven design with 14 pairs of TO-3 bipolar output transistors per channel. It is bridgeable to 1,000 watts mono, stable into 2-ohm loads, and features balanced XLR and unbalanced RCA inputs alongside a 12V trigger for system automation. The GFA-585se is available at Vinyl Sound in Buffalo, NY as an authorized Adcom dealer.\u003c\/p\u003e\n\u003ch3\u003eHow does the Adcom GFA-585se compare to the Emotiva XPA-2 Gen3, Parasound Halo A 21+, and Rotel RB-1590 MKII?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-585se offers significantly more output power than all three competitors. The Parasound Halo A 21+ delivers 300W into 8 ohms and 500W into 4 ohms and is widely regarded for its high-bias Class A\/B operation, but comes in well above the GFA-585se at its price point. The Emotiva XPA-2 Gen3 provides 300W into 8 ohms but lacks the TO-3 output stage and parallel-driven topology that give the GFA-585se its high-current character. The Rotel RB-1590 MKII rates at 350W per channel and uses a similar Class A\/B design but carries a higher asking price. For buyers in the Buffalo and Western New York area seeking maximum clean watts per dollar with exceptional speaker load tolerance, the GFA-585se at Vinyl Sound represents an unusually strong value proposition.\u003c\/p\u003e\n\u003ch3\u003eCan the Adcom GFA-585se drive difficult or low-impedance loudspeakers?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-585se is rated for unconditional stability into speaker loads as low as 2 ohms in stereo mode, and the triple-Darlington output stage is specifically engineered to maintain full rated performance into highly reactive loads regardless of the phase angle between voltage and current. This makes it an ideal match for electrostattic panels, planar-magnetic speakers, and any dynamic loudspeaker that dips below 4 ohms across its impedance curve.\u003c\/p\u003e\n\u003ch3\u003eWhat is a triple-Darlington output configuration and why does it matter?\u003c\/h3\u003e\n\u003cp\u003eA triple-Darlington configuration is an output transistor arrangement where three successive transistor stages are connected so that each drives the base of the next, resulting in extremely high current gain and very efficient power transfer to the load. In the GFA-585se, this topology is implemented with 14 pairs of robust TO-3 metal-cased bipolar transistors per channel, providing the drive capability needed to deliver 50-plus amperes of peak output current instantaneously. The practical benefit is an amplifier that does not compress or distort under demanding transient conditions, maintaining the same composure during a complex orchestral climax that it exhibits during quiet passages.\u003c\/p\u003e\n\u003ch3\u003eCan the Adcom GFA-585se be used as a mono amplifier?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-585se is bridgeable to mono, delivering 1,000 watts into 8 ohms in that configuration. When used bridged, a minimum speaker impedance of 4 ohms is recommended to ensure safe and stable operation. Bridged mono mode is particularly well suited to driving a high-excursion subwoofer, a center channel speaker in an active home theater system, or any application requiring maximum output from a single amplifier channel.\u003c\/p\u003e\n\u003ch3\u003eWhat preamplifiers or AV processors pair well with the Adcom GFA-585se?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-585se works seamlessly with any preamplifier or processor offering balanced XLR or unbalanced RCA outputs, including the matching Adcom GFP-915 stereo preamplifier, the Anthem STR Preamplifier, and the NAD C 658 streaming preamplifier. Its 22,000-ohm input impedance is compatible with virtually all consumer and professional source components, and its 12V trigger input enables one-touch system activation when paired with a processor that provides a corresponding trigger output.\u003c\/p\u003e\n\u003ch3\u003eDoes the Adcom GFA-585se have protection circuits?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-585se incorporates an output relay that engages in the event of a short circuit or DC offset condition, along with independent thermal protection that activates if internal temperatures exceed safe operating limits. Both protection systems are indicated by dedicated front-panel LED indicators, allowing you to immediately identify the nature of any fault condition without opening the amplifier.\u003c\/p\u003e\n\u003ch3\u003eWhere can I buy the Adcom GFA-585se in Buffalo or Western New York?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-585se is available at Vinyl Sound, an authorized Adcom dealer located in Buffalo, NY. Vinyl Sound serves the greater Western New York region with expert guidance on amplifier selection, speaker pairing, and system integration. Visit vinylsound.com or come in to experience the GFA-585se firsthand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":53192952348979,"sku":"GFA-585se","price":3799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/AdcomGFA-585seStereoPowerAmplifier_1.png?v=1775099826"},{"product_id":"adcom-gfa-5705-5-channel-amplifier","title":"Adcom GFA-5705 5 Channel Amplifier","description":"\u003cdiv class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6ddb067d\" data-id=\"6ddb067d\" data-element_type=\"column\" data-e-type=\"column\"\u003e\n\u003cdiv class=\"elementor-widget-wrap elementor-element-populated\"\u003e\n\u003cdiv class=\"elementor-element elementor-element-5379df71 elementor-widget elementor-widget-heading\" data-id=\"5379df71\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch1 class=\"elementor-heading-title elementor-size-default\"\u003eAdcom GFA-5705 5 Channel Stereo Power Amplifier\u003c\/h1\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide1.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-13152ae2 elementor-widget elementor-widget-heading\" data-id=\"13152ae2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\u003cspan class=\"elementor-heading-title elementor-size-medium\"\u003eThe GFA-5705 amplifier can drive a very broad range of loudspeakers, including those with very low impedances, at sustained, high-power levels, even when the impedances are highly reactive. Great care was taken to insure that the distortion in the amplifier would remain extremely low. This 5-channel power amplifier is ideal for home theater use.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-element elementor-element-2b3c253 elementor-widget elementor-widget-heading\" data-id=\"2b3c253\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003ePower\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide5.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-3c01040b elementor-widget elementor-widget-text-editor\" data-id=\"3c01040b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp\u003eThe power supply in the GFA-5705 5-channel amplifier has enormous reserve with an extremely large transformer feeding a storage bank of 30000uF per channel \u0026amp; total of 150,000uF of filter capacitance. The transformer itself was designed for extremely good regulation, insuring stable voltages regardless of the power demands from the amplifier. Its higher efficiency was insured by using a toroidal design.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide6.jpg\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"elementor-element elementor-element-443738ab elementor-widget elementor-widget-heading\" data-id=\"443738ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch2 class=\"elementor-heading-title elementor-size-xl\"\u003e5-channel power amplifier\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-43366034 elementor-widget elementor-widget-text-editor\" data-id=\"43366034\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp\u003eGreat care has been taken by ADCOM to assure that your 5-channel power amplifier is as flawless in appearance as it is electronically. The front panel is a heavy- gauge, high-grade aluminum extrusion carefully finished and anodized for durability. The chassis, top cover and rear panel are of heavy-gauge steel, both painted and baked. If the front panel, top or sides should become dusty or fingerprinted, they can be cleaned with a Swifter and\/or a clean, soft, Lintless, microfiber cloth,slightly dampened with a very mild detergent solution or nonammonia glass cleaner.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide7.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eHome theater authority — all five channels, no compromise.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAdcom GFA-5705\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance 5-channel power amplifier engineered specifically for home theater systems that demand real power across every channel. Delivering\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e200 watts per channel into 8 ohms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— with all five channels driven simultaneously — the GFA-5705 brings the same high-current authority and low-distortion performance Adcom is known for to the full surround experience.\u003c\/p\u003e\n\u003cp\u003eThe GFA-5705 is built to drive a very broad range of loudspeakers, including those with very low impedances, at sustained high-power levels — even when impedances are highly reactive. Great care was taken to ensure distortion remains extremely low under these demanding conditions, making it one of the most capable 5-channel amplifiers available at its price point.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/adcom.com\/wp-content\/uploads\/gfa-5705-slide8.jpg\"\u003e\u003c\/p\u003e\n\u003ch3\u003eMassive Power Supply\u003c\/h3\u003e\n\u003cp\u003eAt the core of the GFA-5705 is a substantial power supply built around a high-efficiency\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003etoroidal transformer\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— chosen for superior regulation and minimal radiated noise. It feeds an enormous storage bank of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e30,000µF of filter capacitance per channel\u003c\/strong\u003e, totaling\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e150,000µF across all five channels\u003c\/strong\u003e. This reserve ensures stable, unwavering voltage under any power demand — from quiet dialogue to full-range, multi-channel peaks — keeping every channel composed and in control.\u003c\/p\u003e\n\u003ch3\u003eBuilt to Last\u003c\/h3\u003e\n\u003cp\u003eThe GFA-5705 is as flawless in appearance as it is electronically. Its front panel is crafted from heavy-gauge anodized aluminum extrusion, while the chassis, top cover, and rear panel are heavy-gauge painted and baked steel. The result is a substantial, rack-ready amplifier that looks and feels like the serious piece of engineering it is.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e200W × 5 channels (8 ohms) \/ 300W × 5 channels (4 ohms)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— all channels driven simultaneously\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150,000µF total filter capacitance\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(30,000µF per channel) — massive power reserve for sustained, high-current delivery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-efficiency toroidal transformer\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— exceptional regulation, minimal noise and leakage inductance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrives low-impedance and reactive speaker loads\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith stability and control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamping factor \u0026gt;300\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(20Hz–20kHz) — tight, authoritative bass across all channels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-wide power bandwidth\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— 5Hz to 100kHz (−3dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for home theater\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— purpose-built 5-channel design for surround sound systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual voltage compatible\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— 120VAC \u0026amp; 230VAC \/ 50–60Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-gauge anodized aluminum \u0026amp; baked steel chassis\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— rack-compatible, built for long-term reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power – 8 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200W per channel × 5 (all channels driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power – 4 Ohms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300W per channel × 5 (all channels driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10Hz – 20kHz, +0 \/ −0.25dB (1W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Bandwidth (−3dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5Hz – 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22,000 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.8V rms (200W into 8 ohms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300 (20Hz – 20kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply Filter Capacitance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150,000µF total (30,000µF per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Transformer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-efficiency toroidal design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120VAC \u0026amp; 230VAC \/ 50–60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Dimensions (H × W × D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.75\" × 19\" × 19.75\" (275 × 480 × 565 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e81 lbs. (37 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90 lbs. (41 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-gauge anodized aluminum front panel; painted \u0026amp; baked steel chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Adcom GFA-5705?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-5705 is a 5-channel Class A\/B stereo power amplifier from Adcom, USA, rated at 200 watts per channel into 8 ohms and 300 watts per channel into 4 ohms with all channels driven simultaneously. It features a 150,000µF power supply, balanced XLR and unbalanced RCA inputs, and a damping factor exceeding 300, making it a purpose-built solution for high-performance home theater systems. The GFA-5705 is available at Vinyl Sound in Buffalo, NY as an authorized Adcom dealer.\u003c\/p\u003e\n\u003ch3\u003eHow does the Adcom GFA-5705 compare to the Emotiva XPA-5 Gen3, NAD CI 9 x 60 DSP, and Rotel RMB-1585 MKII?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-5705 delivers more raw power per channel than all three competitors, rated at 200W into 8 ohms and 300W into 4 ohms with all channels driven. The Emotiva XPA-5 Gen3 offers 200W into 8 ohms but steps down significantly under load, while the NAD CI 9 x 60 DSP targets custom installation and distributed audio rather than dedicated home theater amplification. The Rotel RMB-1585 MKII delivers 200W x 5 but uses a combination of switching and linear power supply topology, whereas the GFA-5705 is a fully discrete linear Class A\/B design with a massive toroidal transformer and 150,000µF of filter capacitance — providing a larger energy reserve for sustained, high-current demands. Shoppers in Buffalo and Western New York can audition and purchase the GFA-5705 at Vinyl Sound.\u003c\/p\u003e\n\u003ch3\u003eCan the Adcom GFA-5705 drive low-impedance or difficult loudspeakers?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-5705 was specifically engineered to drive loudspeakers with very low impedances and highly reactive loads at sustained high-power levels. Adcom used a computer model of a difficult reactive loudspeaker during development to verify performance into real-world loads — not just bench resistors — ensuring the amplifier delivers its full rated power where it counts. Its damping factor above 300 further ensures precise woofer control across all five channels simultaneously.\u003c\/p\u003e\n\u003ch3\u003eWhat is Class A\/B amplifier topology and why does it matter?\u003c\/h3\u003e\n\u003cp\u003eClass A\/B is a well-established amplifier design that combines the sonic benefits of Class A operation at low signal levels — where both output devices remain active simultaneously — with the greater efficiency of Class B at higher output levels. The result is an amplifier that offers low distortion and natural sound quality without the excessive heat and power consumption of pure Class A designs. In the GFA-5705, Class A\/B topology is paired with a massive linear power supply, giving it both sonic refinement and the muscle to handle demanding 5-channel home theater loads continuously.\u003c\/p\u003e\n\u003ch3\u003eDoes the Adcom GFA-5705 have balanced XLR inputs?\u003c\/h3\u003e\n\u003cp\u003eYes. The GFA-5705 provides both balanced XLR and unbalanced RCA inputs on every channel, giving you full compatibility with virtually any AV processor or surround sound preamplifier. Balanced connections are particularly useful in home theater installations where longer cable runs between the processor and amplifier are common, as they reject induced noise and hum more effectively than single-ended RCA connections.\u003c\/p\u003e\n\u003ch3\u003eWhat AV processors pair well with the Adcom GFA-5705?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-5705 pairs naturally with any AV processor or surround preamp offering balanced XLR or unbalanced RCA outputs across five channels. Excellent pairing options include the Adcom GTP-600 preamplifier-processor, the NAD T 778 AV receiver used as a preamp-out source, and the Anthem AVM 90 processor for audiophile-grade home theater applications. With its 22,000-ohm input impedance and 1.8V RMS input sensitivity, the GFA-5705 is compatible with virtually all professional and consumer-grade surround processors available today.\u003c\/p\u003e\n\u003ch3\u003eIs the Adcom GFA-5705 rack-mountable?\u003c\/h3\u003e\n\u003cp\u003eThe GFA-5705 features a standard 19-inch wide front panel, making it compatible with professional audio rack enclosures. At 10.75 inches tall and weighing 81 lbs., it requires a sturdy rack shelf rather than ear-mount brackets for proper support. Its dimensions of 10.75\" x 19\" x 19.75\" should be confirmed against your rack depth before installation, as the 19.75-inch depth requires a deeper-than-standard rack.\u003c\/p\u003e\n\u003ch3\u003eWhere can I buy the Adcom GFA-5705 in Buffalo or Western New York?\u003c\/h3\u003e\n\u003cp\u003eThe Adcom GFA-5705 is available at Vinyl Sound, an authorized Adcom dealer located in Buffalo, NY. Vinyl Sound serves the greater Western New York and Buffalo metro area, offering expert guidance on home theater amplification, speaker pairing, and system integration. Visit vinylsound.com or stop in to experience the GFA-5705 firsthand.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adcom","offers":[{"title":"Default Title","offer_id":53192955593011,"sku":"GFA-5705","price":3799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/files\/AdcomGFA-585seStereoPowerAmplifier_1_ddc7e4cc-a2fd-4d80-9665-fa83147658e1.png?v=1775100047"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/0293\/0739\/collections\/ADCOM_LOGO.png?v=1775095130","url":"https:\/\/vinylsound.com\/collections\/adcom-vinyl-sound-buffalo-ny-usa.oembed","provider":"Vinyl Sound USA","version":"1.0","type":"link"}