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Accuphase A-300 Monophonic Class A Power Amplifier


SKU AccuphaseA-300

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

    Continuous Average Output Power: 125 watts (8 ohms), 250 watts (4 ohms), 500 watts (2 ohms), 1,000 watts (1 ohm, music signal) / Bridged operation (2 units): 500 watts (8 ohms), 1,000 watts (4 ohms), 2,000
    watts (2 ohms, music signal)
    Frequency Response: 0.5 Hz – 160 kHz +0 dB, –3.0 dB
    Intermodulation Distortion: 0.01% or less
    Damping factor: 1,000 or more (JEITA, 8-ohm load, 50 Hz)
    S/N Ratio: 130 dB (GAIN: MAX), 135 (GAIN: –12 dB) (A-weighted)
    Rated Input: 1.26 V