Technics Amplifier S-V4 
Power output: 55 watts per channel into 8Ω (stereo)
Frequency response: 5Hz to 150kHz
Total harmonic distortion: 0.02%
Damping factor: 50
Input sensitivity: 0.17mV (MC), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 68dB (MC), 85dB (MM), 97dB (line)
Output: 150mV (line)
Speaker load impedance: 4Ω to 16Ω
Dimensions: 430 x 142 x 292mm
Weight: 8.5kg
Year: 1980