VERY rare receiver in particularly good and beautiful condition. The wooden casing is also beautiful! The lights have been replaced and work once again. Beautiful green lighting, eye-catcher, very special buttons, a great design in a beautiful wooden cabinet. Only defect: some letters have disappeared but it is not bothersome or really noticeable. If this is your brand and you are looking for a receiver, then you have to buy this, because you will not find it in better condition than this. And it is rare, you only commonly see the 31S. Specifications Tuning range: FM, MW Power output: 30 watts per channel into 8Ω (stereo) Frequency response: 10Hz to 35kHz Total harmonic distortion: 0.5% Damping factor: 35 Input sensitivity: 2.5mV (MM), 150mV (line) Signal to noise ratio: 60dB (MM), 70dB (line) Output: 150mV (line) Dimensions: 465 x 315 x 140mm Weight: 10 kg Year: 1975