HiFi Rose RA280 Integrated Amplifier at Vinyl Sound Buffalo, NY USA

The RA280 is an integrated amplifier from HiFi Rose (Seoul, South Korea), available at Vinyl Sound in Buffalo, New York, USA. Sharing the same Class AD GaN FET amplification technology as the flagship RA180, the RA280 delivers 250 watts per channel into both 8 ohms and 4 ohms from a dual-mono amplifier configuration with isolated circuitry, achieving a signal-to-noise ratio of 109 dB (balanced and unbalanced) and a frequency response extending to 85 kHz at -3 dB. A solid aluminum and steel chassis with integrated heat sinks, front-panel VU meters, a motorized volume knob controllable by remote and app, and inputs including balanced XLR, three RCA line inputs, and a moving magnet phono input make the RA280 a high-performance, full-featured integrated amplifier for two-channel audiophile systems.

Class AD GaN FET Dual-Mono Amplification

The RA280 uses Gallium Nitride FETs in its output switching stage, the same innovative device type that defines the flagship RA180's Class AD topology. In conventional Class D amplifiers, silicon FETs introduce non-linearity during the brief dead time between switching states. GaN FETs switch up to ten times faster than silicon equivalents, reducing dead time to near-zero and achieving a linear output approaching that of Class A and Class AB designs. The RA280 configures these amplifiers as dual-mono channels with isolated circuitry and premium internal components, yielding a measured SNR of 109 dB on both balanced and unbalanced inputs and 85 dB on the MM phono input. Power output is 250W per channel into both 8 ohms and 4 ohms, providing substantial drive capability for a wide range of loudspeakers.

Old-School Controls, Modern Performance

The RA280's front panel blends classic and contemporary design cues. Illuminated analog VU meters monitor output levels, bypassable bass and treble tone controls allow room-optimized sound shaping, and a motorized volume knob moves physically in response to remote or app commands. A 12V trigger input and output enable automated system power sequencing. The rear panel provides a circuit breaker reset button, a subwoofer mono RCA output, and speaker binding posts for a single pair of loudspeakers. All connections are analog, but the RA280 pairs naturally with HiFi Rose streaming DACs such as the RS451 or RS250A for a complete high-resolution source and amplification system. The RA280 is controlled via the included remote control or the free ROSE Connect mobile app for Apple and Android devices.

Key Features

• Class AD GaN FET Amplification: Gallium Nitride FET output devices switch up to ten times faster than silicon, reducing dead time and delivering a near-linear, natural-sounding output.
• 250W per Channel Dual-Mono: 250W into 8 ohms and 250W into 4 ohms from isolated dual-mono amplifier channels with premium components.
• 109 dB Signal-to-Noise Ratio: Achieved on both balanced XLR and unbalanced RCA inputs for exceptionally quiet operation.
• Balanced XLR Input: Low-noise balanced connection for high-end source components and streaming DACs.
• MM Phono Input: Moving magnet phono stage for direct turntable connection, with an 85 dB SNR.
• Bypassable Tone Controls: Bass and treble controls that can be switched entirely out of the signal path for purist listening.
• Front-Panel VU Meters: Illuminated analog output level meters with 3-level dimmer for front-panel display brightness.
• Motorized Volume Knob: Physical volume control that moves in response to remote control or app commands.
• Subwoofer Output: Mono RCA subwoofer output for active subwoofer integration.
• 12V Trigger: 3.5mm trigger input and output for automated power sequencing with source components.
• Solid Aluminum and Steel Chassis: Integrated heat sinks and heavyweight construction at over 20 pounds for mechanical stability.

Technical Specifications

Frequently Asked Questions

What is the HiFi Rose RA280?

The HiFi Rose RA280 is an integrated amplifier from Seoul, South Korea, using Class AD GaN FET dual-mono amplification to deliver 250W per channel into both 8 and 4 ohms, with a 109 dB SNR, balanced XLR input, MM phono stage, bypassable tone controls, and front-panel VU meters. It is available at Vinyl Sound in Buffalo, New York, USA.

How does the RA280 compare to the Parasound Halo Integrated?

The HiFi Rose RA280 and the Parasound Halo Integrated (from San Francisco, California) are both stereo integrated amplifiers offering balanced inputs and phono stages in the same price tier. The Parasound Halo Integrated uses John Curl-designed Class AB amplifier circuits rated at 160W per channel into 8 ohms, and includes a moving coil phono stage alongside MM. The RA280 uses GaN FET Class AD switching for 250W per channel into both 8 and 4 ohms, but its phono stage handles MM only. The RA280 is remote-operable via a motorized volume control and the ROSE Connect app, and pairs naturally with HiFi Rose streamers as a complete source-to-amplifier solution.

What is the difference between the RA280 and the RA180?

The RA180 is HiFi Rose's reference flagship integrated amplifier using four independent mono amplifier modules enabling internal bi-amplification, BTL bridging to 400W per channel, a variable-EQ MM/MC phono stage, an active crossover for supertweeter integration, and a frequency response extending to 200 kHz at -6 dB. The RA280 is a stereo dual-mono design at 250W per channel with a simpler MM-only phono stage and no bi-amplification capability, offering the same Class AD GaN FET technology in a more accessible package suited to conventional two-channel loudspeaker systems.

Can the RA280 work with a turntable?

Yes. The RA280 includes a moving magnet phono input on RCA for direct connection of a turntable equipped with an MM cartridge. The phono stage achieves an 85 dB signal-to-noise ratio. For Moving Coil cartridges, an external MC step-up transformer or MC phono preamplifier is required before the RA280's phono input.

Does the RA280 support a subwoofer?

Yes. The RA280 includes a mono RCA subwoofer output on the rear panel for connecting an active powered subwoofer. This allows bass extension beyond the capability of the main loudspeakers without requiring an external bass management unit.

Where can I buy the HiFi Rose RA280 in Buffalo or the USA?

The HiFi Rose RA280 Integrated Amplifier is available at Vinyl Sound in Buffalo, New York, an authorized HiFi Rose dealer serving customers across the USA. Vinyl Sound carries the complete HiFi Rose lineup, including the RS451 and RS250A streaming DACs that pair naturally with the RA280 for a complete high-resolution system.