Accuphase

A-80

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.

Specification

• 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