Accuphase M-6200 Monophonic Power Amplifier

Furthermore, improvements to the NFB circuit using remote sensing and other technological refinements result in a damping factor in excess of 1,000 and make the amplifier capable of delivering constant current down to extremely low impedance loads. In the input stage, parallel operation along with optimized gain allocation keeps noise levels to an absolute minimum, as illustrated by the astonishing S/N ratio of 127 dB at maximum gain and 133 dB at the -12 dB gain setting.

Features

Two totally identical power amplifier units driven in parallel

Output stage features novel high-power transistor devices in a dual 8-parallel push-pull arrangement

Latest low-noise instrumentation amplifier technology

MCS+ circuit and current feedback topology in amplification stage

Support for bridged use of two M-6200 units with even higher output power

Strong power supply with massive high-efficiency toroidal transformer and large filtering capacitors

Specifications

Continuous Average Output Power (20–20,000 Hz): 1200 watts per channel into 1 ohm, 600 watts per channel into 2 ohms, 300 watts per channel into 4 ohms, 150 watts per channel into 8 ohms. Monophonic operation (bridged connection) - 2400 watts into 2 ohms, 1200 watts into 4 ohms, 600 watts 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: 500

Input Sensitivity (with 8-ohm load, GAIN selector in MAX position): 1.38 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): 120 dB at rated continuous average output

Output Level Meters: –60 to +3 dB (dB/% indication), Logarithmic compression scale, Display illumination off switch, Peak hold time select: 3 seconds

Power Requirements: AC 120 V/230 V, 50/60 Hz (Voltage as indicated on rear panel)

Power Consumption: 180 watts idle. 550 watts in accordance with IEC 60065

Maximum Dimensions: Width 465 mm, Height 220 mm, Depth 500 mm

Mass: 38.5 kg net, 48.0 kg in shipping carton