Monophonic DC Power Amplifier (1977-78)
Power output: 300W into 8Ω (mono)
Frequency response: 5Hz to 50kHz
Total harmonic distortion: 0.02%
Damping factor: 200
Input sensitivity: 1V
Signal to noise ratio: 120dB
Speaker load impedance: 4Ω to 16Ω
Dimensions: 480 x 154 x 409.5mm
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Kenwood Power Amplifiers
Reviewed Nov 09th, 2014 by blackrifle
Pair purchased new in 1983. Other than annually blowing out dust bunnies and cleaning fan no other PM performed. After 31 years pulled from rack, PM'd and stress-tested by ethical and respected A/V service specialist using MTE with valid calibration tags.
Two cold-solder joints on input PCB were found and reflowed with MultiCore 3.5% silver solder (F'-RHoS!). Hitachi beer can electrolytics tested in-spec so were not replaced.
Using Audio Precision APX-555, Report of Test shows 410W and 422W respectively into 8 Ohms resistive, 20Hz-20KHz to distortion spec of 0.020%. First time I ever heard fan(s) at full speed. Quite amazed and very pleased.