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Accuphase A-200 Mono Power Amp


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Product Description

Mono Power Amplifier (Class-A, 1x800w/1 ohm).

The A-200 encompasses Accuphase power amplifier know-how to the fullest. It is destined to become another milestone, taking the art of audio to the next level. In order to realize ideal speaker drive capability, the A-200 employs a structural design that exceeds even the M-6000. Two completely separate power amplifier units, each with its own dedicated heat sink on either side of the chassis, are driven in parallel.
Another outstanding characteristic of the A-200 is its enormously improved S/N ratio. By adopting the advanced instrumentation amplifier principle for the input stage in a double configuration, using only discrete electronic components instead of ICs, and fine-tuning the gain complement with the following stage, simply amazing S/N ratings were achieved: 126 dB at the maximum gain setting and 132 dB with gain set to –12 dB. These represent ultimate values even in the formidable Accuphase lineup.

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  • Pure Class A operation delivers 100 watts of quality power into 8 ohms
  • Two totally identical power amplifier units driven in parallel
  • 20-parallel push-pull arrangement of MOS-FET devices in output stage delivers linear high power progression to ultra-low 1-ohm impedance
  • Input section configured as double instrumentation amplifier
  • Double MCS+ circuit and current feedback topology in amplification stage
  • Support for bridged use of two A-200 units with even higher output power
  • Strong power supply with massive high-efficiency toroidal transformer and large filtering capacitors




  • Continuous Average Output Power (20–20,000 Hz): Stereo operation (both channels driven) - 800 watts per channel into 1 ohm, 400 watts per channel into 2 ohms, 200 watts per channel into 4 ohms, 100 watts per channel into 8 ohms. Monophonic operation (bridged connection) - 1600 watts into 2 ohms, 800 watts into 4 ohms, 400 watts into 8 ohms.
  •  Continuous Peak Output Power (1 kHz): 1000 watts per channel into 1 ohm, 630 watts per channel into 2 ohms, 360 watts per channel into 4 ohms, 180 watts per channel into 8 ohms.
  • Total Harmonic Distortion: 0.05% with 2 ohm load, 0.03% with 4 to 16 ohm load.
  • Intermodulation Distortion: 0.01%
  • Frequency Response: At rated output: 20 – 20,000 Hz +0, -0.2 dB. At 1 watt output: 0.5 – 160,000 Hz +0, -3.0 dB
  • Gain: 28.0 dB (with GAIN selector at MAX)
  • Gain Selection: MAX, -3 dB, -6 dB, -12 dB
  • Output Load impedance: Continuous - 2 to 16 ohms. With music signal: 1 to 16 ohms
  • Damping Factor: 1000
  • Input Sensitivity (with 8-ohm load, GAIN selector in MAX position): 1.13 V for rated continuous average output. 0.11 V for 1 watt output
  • Input Impedance: Balanced - 40 kilohms. Line - 20 kilohms
  • Signal-to-Noise Ratio (A-weighted, input shorted): 126 dB (GAIN selector at MAX), 132 dB (GAIN selector at -12 dB) At rated continuous average output
  • Output Level Meters (digital indication and bar graph): Digital meters: 5-digit indication, selectable range (10 W / 100 W / 1000 W). Bar graph meters: 40-point scale. Hold time: 1 second/, switchable. *Display off setting provided.
  • Power Requirements: AC 120 V/230 V, 50/60 Hz (Voltage as indicated on rear panel)
  • Power Consumption: 300 watts idle. 400 watts in accordance with IEC 60065
  • Maximum Dimensions: Width 465 mm, Height 238 mm, Depth 514 mm
  • Mass: 46.0 kg net, 55.0 kg in shipping carton