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Accuphase

Accuphase A-80 Class A Stereo Power Amplifier

Accuphase A-80 Class A Stereo Power Amplifier

Accuphase A-80 Class A Stereo Amplifier

Overview

The Accuphase A-80 is a Class A power amplifier developed as a stereo amplifier version of our 50th anniversary A-300 model. Optimizing the 10-parallel push-pull power MOS-FETs in the output stage produces an output power of 65 W into 8 ohms, 130 W into 4 ohms, 260 W into 2 ohms, and 520 W into 1 ohm. Rigorous investment into new, cutting-edge noise reduction technologies has achieved a sense of presence and minute expression that rival live performances. The Accuphase A-80 power amplifier perfectly fuses modern technology with the wealth of knowledge Accuphase has amassed in its pursuit of perfect sonic expression.

Features

  • Class A driven 10 parallel push pull MOS-FET output stage
  • Instrumentation amplifier
  • Current feedback amplification topology
  • Balanced remote sensing
  • MCS+ circuitry
  • Meter display switching
  • Digital power meter display switching
  • Hold time switching function that changes the meter peak display time 
  • LINE / BALANCED input switching
  • 4-step gain control
  • Polarity switching of balanced input connectors
  • Bi-amping connection and bridged connection switching
  • Signal input section with a fully discrete configuration for low noise
  • Speaker output protection circuit guards against short circuiting
  • Large speaker terminals connected directly to protection circuitry
  • Edgewise coils improve damping factor
  • Highly reliable MOS-FET switches with no mechanical connections
  • Large, high efficiency toroidal transformer
  • High capacity 120,000 μF filtering capacitors
  • Aluminium hairline finish top plate
  • Highly responsive large scale bar graph meters and digital power meters
  • High carbon cast iron insulator feet with superior damping characteristics
  • Power amplification section on circuit boards using glass cloth fluorocarbon resin 
Specifications
  • Power output: 65 W into 8 ohms, 130 W into 4 ohms, 260 W into 2 ohms and 520 W into 1 ohm large linear output power
  • Frequency response: 20Hz to 20kHz
  • Total harmonic distortion: 0.03%
  • Damping factor: 1000
  • Gain: 28 dB
  • Input sensitivity: 0.91V
  • Signal to noise ratio: 123dB
  • Speaker load impedance: 2Ω to 16Ω
  • Dimensions: 465 x 240 x 515mm
  • Weight: 44.6kg
  • Year: 2023
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