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Superscope QA-420

Solid-State 4 Channel Amplifier (1972)

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Superscope QA-420

Specifications

Power output: 15W/ch into 8Ω (stereo), 50W/ch into 4Ω (quadraphonic)

Frequency response: 30Hz to 20kHz

Total harmonic distortion: 0.3%

Input sensitivity: 2.5mV (MM), 200mV (ceramic), 130mV (line)

Signal to noise ratio: 60dB (MM), 70dB (line)

Speaker load impedance: 8Ω (minimum)

Dimensions: 4-33/64 x 16-23/32 x 10-33/64 inches

Weight: 16.5lbs

Year: 1972

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