Manufacturer's Specifications
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Amplifier details
Specifications

 
   
Year of manufacture: 1959 - 1961
Manufactured by: Sherwood Electronic Laboratories, 4300 North California Avenue, Chicago 18, Illinois
Price when new (in the USA): $159 less case (metal case $5, mahogany $10)
Description: Integrated amplifier
Mono/stereo: stereo preamplifier, mono power amplifier
Power output: 36 watts RMS, 72 Watts peak
Distortion: 0·5% at rated power
Intermodulation distortion: 1.5% at rated power
Frequency response: 20Hz - 20kHz ± 1.5dB
Inputs: two phono inputs with 4 equalisation settings; tape playback, microphone, radio
Hum & noise (below rated output, unweighted): radio input: -90dB; phono: -72dB.
Input sensitivities: radio: 0.25V, phono (adjustable): 2.5V
Output impedance: 4, 8 or 16
Tubes: 2 x 7189 (68Q5), EZ81 (6CA4, 3 x 12AX7/ECC82, 7199
Dimensions: 14 in. x 10½ in. x 4 in. (356 x 267 x 102 mm)
Weight: 23 lbs (10.5 kg)
Power consumption: 110 - 120 volts 60 c/s