Description
Accuphase A-80 Class A Stereo Power Amplifier
The Legacy of the A-300, Refined for Stereo
The A-80 is a stereo version of the renowned A-300, created to celebrate over 50 years of Accuphase’s relentless pursuit of perfect sound. Its Class A output stage features 10-parallel push-pull power MOS-FETs per channel, producing exceptional power and transparency: 65 W into 8 ohms, 130 W into 4 ohms, 260 W into 2 ohms, and 520 W into 1 ohm. Designed for audiophiles who demand expressive musical detail and unmatched sonic realism, the A-80 seamlessly fuses advanced engineering with Accuphase’s deep heritage of audio excellence.
State-of-the-Art Circuitry for Sonic Purity
The A-80 uses a fully discrete, balanced input amplifier built on the instrumentation amplifier principle, minimising noise and distortion from the earliest stages of the signal path. Its current feedback topology and MCS+ circuitry ensure lightning-fast response and crystal-clear fidelity. Balanced Remote Sensing maintains ideal speaker damping, and with a damping factor of 1,000, the A-80 achieves precise speaker control across the entire frequency spectrum.
Premium Build for Long-Term Reliability
This amplifier isn’t just about sound—it’s built like a sculpture. From its glass cloth fluorocarbon resin PCBs to the massive 120,000 μF filtering capacitors and high-efficiency toroidal transformer, every component has been selected for its durability and sonic benefit. Large speaker terminals connect directly to protection circuitry, and the beautifully machined aluminum top plate and high-carbon cast iron feet ensure optimal vibration damping and luxurious physical presence.
Key Features
- 65 W / 8 ohms, 130 W / 4 ohms, 260 W / 2 ohms, 520 W / 1 ohm output power
- Class A 10-parallel push-pull power MOS-FETs per channel
- Fully discrete instrumentation amplifier input stage
- Current feedback amplification and MCS+ circuit design
- Balanced Remote Sensing and high damping factor of 1,000
- Large toroidal transformer for high efficiency and stable power
- 120,000 μF high-capacity filter capacitors
- Peak hold time switchable bar graph meter display
- 4-step gain control for optimal system matching
- Switchable bi-amping and bridged connection modes
- Speaker output protection circuit against short-circuiting
- High-reliability MOS-FET switching with no mechanical contact
- Glass cloth fluorocarbon resin PCB for low signal loss
- Premium aluminum top plate with hairline finish
- High-carbon cast iron feet for vibration damping
