Description
Accuphase C-2900 Precision Stereo Preamplifier
Precision Volume Control Refined Over 50 Years
The preamplifier’s volume control is a vital component for maintaining the vibrancy and integrity of the sound source. Accuphase has spent over five decades refining this critical element, culminating in the C-2900 and its revolutionary Balanced AAVA (Accuphase Analog Vari-gain Amplifier) system. This proprietary volume control design delivers stunning sonic accuracy and transparency, making the C-2900 an exceptional choice for passionate audiophiles seeking faithful musical reproduction.
Noise-Reduced Construction with Elegant Engineering
Signal switching is handled by logic-controlled relays for exceptional longevity and sonic integrity. The printed circuit boards use glass cloth fluorocarbon resin with a low dielectric constant and gold-plated copper foil for minimal signal loss. Power is supplied via independent toroidal transformers and large filtering capacitors (10,000 μF × 4) per channel. The result is a quiet, stable, and powerful foundation for the purest signal transmission possible.
Extensive Connectivity and User Control
The C-2900 offers a flexible and fully featured control layout, including five line-level inputs, two balanced inputs, and matching outputs. The inclusion of EXT PRE inputs enables seamless integration with external preamps. Users can individually assign phase settings per input, control left/right balance, switch stereo to mono, and engage a -20dB attenuator. The display is easy to read and can be turned off when desired, while the dedicated headphone amplifier ensures reference-quality personal listening.
Key Features
- Balanced AAVA volume control for ultra-low noise and exceptional accuracy
- Logic-controlled relays for high sound quality and long-term reliability
- Signal PCBs use low-loss fluorocarbon resin with gold-plated copper foil
- Separate toroidal transformers and large filter capacitors for each channel
- Quiet, smooth-operating volume sensor mechanism
- 5 line-level and 2 balanced inputs; 2 line and 2 balanced outputs
- Recorder loop with line-level input and output
- Line-level and balanced EXT PRE inputs for external preamplifier integration
- Individual phase setting for each input
- Selectable overall gain: 12 dB / 18 dB / 24 dB
- Balanced left/right channel adjustment via AAVA
- Mono conversion, -20 dB attenuator, and loudness compensator
- Discrete high-quality headphone amplifier with push-pull output stages
- Subsonic filter to remove ultra-low frequency noise (e.g., from warped records)
- Natural wood cabinet with mirror finish, hand-crafted from virgin wood
- High-carbon cast iron insulator feet with excellent damping properties
Optional Phono Compatibility with AD-2900
Add the optional AD-2900 phono equalizer board to enable analog disc playback, with convenient front panel switching and extensive customization:
- Switch between MC and MM cartridges
- Select MC load impedance: 10 / 30 / 100 / 200 / 300 ohms
- Gain options: MM (34 / 40 dB), MC (64 / 70 dB)
