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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
 
Specifications
 
65W/8-ohm
260W/2-ohm.
520W/1-ohm.
Power MOS-FET output stage features 10-parallel push-pull configuration.
SN ratio is an incredible 122dB at max gain setting.
Bi-wire terminals.
Optional bridging.
Super high damping factor of 1,000.