Accuphase C-57 Stereo Phono Amplifier at Vinyl Sound Buffalo, NY USA

The Accuphase C-57 is the flagship stereo phono equalizer amplifier from Accuphase (Yokohama, Japan), available at Vinyl Sound in Buffalo, NY USA. The fourth generation of Accuphase's standalone phono amplifier line, succeeding the C-27 (2008), C-37 (2014), and C-47 (2020), the C-57 is a fully balanced phono equalizer from input to output with a dedicated MC head amplifier featuring ANCC (Accuphase Noise and Distortion Cancelling Circuit) — a first in any Accuphase phono stage — achieving a guaranteed input referred noise of -156 dBV for MC, 1dB better than the C-47. The C-57 provides one dedicated balanced MC phono XLR input and three standard phono inputs, seven MC loading positions (10/30/60/100/200/300/1k ohms) including the new 60 ohm position added for low-impedance MC cartridges, three MM loading positions, separate settings memory per input, RIAA equalization accurate to ±0.3 dB, and circuit topologies drawn directly from the C-3900 reference preamplifier and E-800S integrated amplifier. The Ear UK reviewed the C-57 in August 2025, concluding it is capable of showing some more expensive phono stages a clean pair of heels, offering superb sound and good value for money, and recommending it as essential to any shortlist at its price.

ANCC MC Head Amplifier and Fully Balanced Architecture

The C-57's defining advance over the C-47 is the application of ANCC (Accuphase Noise and Distortion Cancelling Circuit) to the MC head amplifier — a first for any Accuphase phono stage. ANCC detects the residual noise and distortion components at the input of the I-V converter stage and injects a precisely calibrated inverted-polarity cancellation current to cancel both at the source, pushing the guaranteed input referred noise to -156 dBV for MC — a figure Accuphase describes as world-champion-class phono noise performance. The MC head amplifier uses an eight-parallel bipolar transistor sub-amplifier circuit operating at a specially low supply voltage, simultaneously achieving improved noise performance and reduced power consumption within the head amplifier stage. Low-noise JFET transistors are used in the MM head amplifier for equivalent performance on moving-magnet cartridges. The fully balanced configuration extends from the dedicated balanced MC phono XLR input through the head amplifier, RIAA equalization stage, and balanced XLR output, allowing turntables and tonearms with balanced tonearm cables to connect to the C-57 in a fully differential signal path that provides common-mode noise rejection at every stage. The Ear noted the C-57 was detailed and dynamic with plenty of insights into how musicians are playing and shaping notes, conveying pace and impetus in a way that made music make sense in front of the listener.

RIAA Precision, Loading Flexibility, and Dual-Mono Construction

The C-57's RIAA equalization achieves a deviation of only ±0.3 dB from 10Hz to 20kHz, a figure that represents state-of-the-art phono equalization accuracy and ensures that the frequency balance of every record played through the C-57 is restored to within the RIAA standard across the full audio bandwidth. The disc equalizer assembly uses glass fiber cloth fluorocarbon resin PCBs — the same material as the C-3900 flagship preamplifier — with lower dielectric constant and lower dielectric loss than standard FR4 fiberglass for superior high-frequency stability of the component values that determine the RIAA curve. Seven MC loading positions including the new 60 ohm option added between the C-47's 30 and 100 ohm positions accommodate the full range of current MC cartridges including low-impedance designs from Lyra, Ortofon, van den Hul, Koetsu, and Audio-Technica. Separate settings memory for each input position stores the gain and loading configuration for up to four cartridges, allowing instant switching between cartridges with saved settings restored automatically. The fully dual-mono internal construction with separate toroidal power transformers per channel and low-noise regulated power supply circuits unaffected by load fluctuations matches the dual-mono philosophy of the C-3900 and C-3900S preamplifiers with which the C-57 naturally pairs in an Accuphase reference analog system at Vinyl Sound Buffalo, NY USA.

Key Features

• ANCC MC Head Amplifier (Industry First): ANCC noise and distortion cancellation applied to the MC head amplifier for the first time in any Accuphase phono stage, achieving guaranteed -156 dBV input referred noise for MC — 1dB improvement over C-47.
• Fully Balanced Configuration Input to Output: Balanced circuit path from dedicated balanced MC XLR input through head amplifier, RIAA stage, and balanced XLR output for maximum common-mode noise rejection throughout.
• Dedicated Balanced MC Phono XLR Input: One balanced XLR MC input plus three standard phono inputs for connecting tonearms with balanced cables for full differential signal path benefit.
• RIAA Accuracy ±0.3 dB (10Hz to 20kHz): State-of-the-art equalization precision restoring vinyl frequency balance to within RIAA standard across the full audio bandwidth.
• Seven MC Loading Positions: 10/30/60/100/200/300/1k ohms — including new 60 ohm position for low-impedance MC cartridges between C-47's 30 and 100 ohm options.
• Three MM Loading Positions: 1/47/100 kilohms covering all standard moving-magnet cartridge input impedance requirements.
• Separate Input Settings Memory: Gain and loading settings stored independently per input for instant cartridge switching with automatic recall.
• 7-Segment Load Impedance LED Display: Clear front-panel impedance readout for quick verification of active loading setting.
• Dual-Mono Construction: Monaural circuit layout with separate left and right channel boards, transformers, and power supplies for maximum channel separation.
• Fluorocarbon Resin RIAA PCBs: Glass fiber cloth fluorocarbon resin circuit boards for low dielectric constant and superior RIAA component value stability versus FR4.
• Low-Noise Regulated Power Supply: High-capacitance 25V/15,000μF filter capacitors with regulated supply unaffected by load fluctuations for stable head amplifier operating conditions.
• Subsonic Filter: ON/OFF selectable subsonic filter for controlling warp-induced low-frequency noise from warped records.
• Gain Selector: Adjustable gain for low-output MC phono cartridges requiring additional amplification.
• Polarity Selector: Phase inversion of balanced output independent of unbalanced output for absolute polarity correction.
• Natural Grain Wood Cabinet: Elegant wood side panels with aluminum hairline finish top plate and high-carbon cast iron insulator feet.

Technical Specifications

Frequently Asked Questions

What is the Accuphase C-57?

The Accuphase C-57 is the flagship stereo phono equalizer amplifier from Accuphase of Japan, available at Vinyl Sound Buffalo. It is the fourth generation of Accuphase's standalone phono stage line and the first to apply ANCC noise and distortion cancellation to the MC head amplifier, achieving guaranteed -156 dBV input referred noise for MC. It provides a fully balanced circuit from input to output, one dedicated balanced MC XLR input, three standard phono inputs, seven MC and three MM loading positions with per-input memory, RIAA accuracy of ±0.3 dB, and fully dual-mono construction with separate transformers and power supplies per channel.

How does the C-57 compare to the C-47 and competing phono stages?

The Accuphase C-57 advances over the C-47 through ANCC on the MC head amplifier — a first for any Accuphase phono stage — improving guaranteed MC input noise by 1dB to -156 dBV, adding the dedicated balanced MC XLR input not present on the C-47, introducing the 60 ohm MC loading option for low-impedance cartridges, and incorporating circuit topologies from the C-3900 and E-800S reference components. The Ear UK found the C-57 capable of outperforming competing phono stages at notably higher prices. Compared to alternatives including the Pass Labs XP-17, Esoteric E-02, and Luxman EQ-500, the C-57 offers the combination of ANCC-equipped MC head amplification, dedicated balanced MC input, and Accuphase's world-champion-class noise floor that distinguish it from all competing designs.

Why is a dedicated balanced MC phono input important?

A balanced MC phono input accepts the differential signal from a tonearm with balanced output cabling — where the positive and negative signal for each channel are carried on separate conductors with a separate shield — and maintains that differential balance through the entire signal path to the output. This provides common-mode noise rejection at the phono stage input, cancelling any noise induced equally on both signal conductors by the tonearm cable, turntable motor, or external electromagnetic sources. For low-output MC cartridges producing signal levels as low as 0.2mV, this common-mode rejection at the input is particularly beneficial in eliminating noise before it enters the amplification stages where it would be amplified alongside the signal. The C-57 requires a tonearm cable with balanced XLR termination to use this input.

What MC cartridges is the 60 ohm loading position designed for?

The new 60 ohm MC loading position in the C-57 was added specifically to accommodate MC cartridges with lower internal impedances than the C-47's 30 ohm minimum could optimally load while being lower than the 100 ohm position used for standard-impedance cartridges. Low-impedance MC cartridges including certain models from Ortofon, Lyra, Dynavector, and Audio-Technica have internal impedances in the 3 to 15 ohm range where a 60 ohm load provides an appropriate impedance ratio for optimal high-frequency extension and reduced resonance in the MC transformer circuit. The full seven-position loading range of 10/30/60/100/200/300/1,000 ohms on the C-57 covers every MC cartridge from the lowest-impedance coil designs through standard and high-output MC types.

Can the C-57 be used with a turntable without a balanced tonearm output?

Yes, the Accuphase C-57 provides three standard single-ended phono inputs on RCA connectors in addition to the one dedicated balanced MC XLR input, accommodating any turntable with a conventional unbalanced RCA tonearm output. All four inputs support separate gain and loading settings stored in memory per input. For turntables and tonearms with standard RCA outputs including models from Rega, VPI, Thorens, Technics, Pro-Ject, and Clearaudio available at Vinyl Sound Buffalo, the standard phono inputs provide the same ANCC-equipped head amplifier, RIAA accuracy, and dual-mono construction as the balanced input.

Where can I buy the Accuphase C-57 in Buffalo, NY?

The Accuphase C-57 Stereo Phono Amplifier is available at Vinyl Sound USA Inc. in Buffalo, NY, your authorised Accuphase dealer serving Western New York and the United States. Vinyl Sound carries the complete Accuphase analog and digital lineup. Visit vinylsound.com or contact the Buffalo store for current availability and expert system matching guidance pairing the C-57 with Accuphase preamplifiers, turntables, and MC cartridges.