Accuphase A-80 Power Amplifier

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Description

The 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 A-80 power amplifier perfectly fuses modern technology with the wealth of knowledge Accuphase has amassed in its pursuit of perfect sonic expression.

  • 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
  • Class A driven 10-parallel push-pull MOS-FET output stage
  • Instrumentation amplifier
  • Signal input section with a fully discrete configuration for low noise
  • Current feedback amplification topology
  • Balanced remote sensing
  • MCS+ circuitry
  • High damping factor of 1,000
  • Large, high-efficiency toroidal transformer
  • High capacity 120,000 μF filtering capacitors
  • Power amplification section on circuit boards using glass cloth fluorocarbon resin
  • Hold time switching function that changes the meter peak display time
  • 4-step gain control
  • Bi-amping connection and bridged connection switching
  • Large speaker terminals connected directly to protection circuitry
  • Speaker output protection circuit guards against short-circuiting
  • Highly reliable MOS-FET switches with no mechanical
  • Aluminum hairline finish top plate
  • High-carbon cast iron insulator feet with superior damping characteristics