Standard Radio Corp. Amplifier PM-403W

I have had this amplifier since I was 15 years old, it''s from the 70s, and has been in my cupboard for more than 20 years, unfortunately I can''t test it. But it worked back then
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Specifications:

Power output: 10 watts per channel into 8 Ohms (stereo)

Frequency response: 20Hz to 40kHz

Total harmonic distortion: 0.5% At RMS output,

Damping factor: 30

Input sensitivity: 2.5mV (MM), 150mV (ceramic), 100mV (line)

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

Speaker load impedance: 8 Ohms (minimum)

Semiconductors: 18 x transistors, 10 x diodes

Dimensions: 14-11/32 x 7-1/8 x 4-9/16 inches

Weight: 8lbs

Year: 1973

4 x DIN input, 4x DIN output for European version.