Sansui stereo amplifier AU-317 Unit in good working condition and has been recently revised and serviced by a professional Technician. This is what has been serviced to the unit for own records: - Recapped the audio output stage with state of the art Japanese Capacitors from Japan. - Replaced 2 x Power End stage Transistors. Replaced several signal Transistors. -- Replaced several rectifiers. - Recalibrated the bias. - I was able to get 59 Watts x 2 @ 8 ohms before clipping with 1 KHz sinewave input source. All this service comes to a cost for a good working machine. All pictures are original of this unit and part of description so what you see is what you get ! SPECS: Power output: 50 watts per channel into 8Ω (stereo) Frequency response: 5Hz to 70kHz Total harmonic distortion: 0.03% Damping factor: 70 Input sensitivity: 20mV (mic), 2.5mV (MM), 150mV (line) Signal to noise ratio: 77dB (MM), 100dB (line) Channel separation: 65dB (MM), 73dB (line) Output: 150mV (line), 1V (Pre out) Speaker load impedance: 8Ω (minimum) Semiconductors: 51 x transistors, 25 x diodes, 2 x FET Dimensions: 430 x 110 x 340mm Weight: 9.5kg Year: 1978