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Accuphase A-300 Monophonic Class A Power Amplifier

Created to mark our 50th anniversary, the A-300 redefines the ideal for Class A power amplifiers. 20-parallel push-pull power MOS-FETs in the output stage improves performance by 25% over conventional models with outputs of 125 W into 8 ohms, 250 W into 4 ohms, 500 W into 2 ohms, and 1,000 W into 1 ohm that set the stage for enviable constant-voltage drive. The fully discrete balanced input amplifier achieves a level of quietness that will make you forget you are using audio equipment for reproduction. The A-300’s unmatched expressiveness lets you enjoy the most exquisite pieces from the world’s greatest composers.

• Class A driven output stage with 20-parallel push-pull power MOS-FETs
• Large linear output 125 W / 8 ohms, 250 W / 4 ohms, 500 W / 2 ohms, 1,000 W / 1 ohm
• Instrumentation amplifier principle
• Current feedback amplification circuits
• Balanced Remote Sensing
• Double MCS+ circuit
• High damping factor of 1,000
• Speaker output protection
• Highly reliable MOS-FET switches with no mechanical connections
• Signal input section with a fully discrete configuration for low noise
• Highly responsive large-scale bar graph power meter
• Connecting two pairs of A-300 supports bi-amping and bridged mode connection
• 4-step gain control
• High capacity 100,000 μF filtering capacitors
• Large speaker terminals connected directly to protection circuitry
• High-carbon cast iron insulator feet with superior damping characteristics
• Power amplification section on circuit boards using glass cloth fluorocarbon resin
• Aluminum hairline finish top plate