Hadley Laboratories 622
Stereo Power Ampliifer (1965)
Power output: 40 watts per channel into 10Ω (stereo)
Frequency response: 15Hz to 20kHz
Total harmonic distortion: 0.7%
Damping factor: 250
Input sensitivity: 1.1V
Signal to noise ratio: 80dB
Speaker load impedance: 4Ω to 20Ω
Semiconductors: 27 x transistors, 12 x diodes, 8 x rectifiers, 4 x zener diodes
Dimensions: 12.5 x 4.75 x 10.87 inches
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