Vintage Pioneer 'Blue Line' Stereo Amplifier SA-510 + Pioneer Stereo Tuner TX-410L Tested and fully working. I have fixed the usual problem with this amplifier: the Function-selector tends to dry out, and as a result a chanel will give a bit of noise. To prevent I did lubricate the potentiometers, and now it is working flawlessly. However, when the potentiometer dries out again, I suggest to lubricate it again. Very easy! Stereo Amplifier SA-510 Power output: 33 watts per channel into 8Ω (stereo) Total harmonic distortion: 0.03% Signal to noise ratio: 68dB (MM), 85dB (line) Year: 1980 420 x 310 x 95 mm Weight: 6 kg Stereo Tuner TX-410L Type: Mono/Stereo Tuner Tuning Bands: FM, MW, LW Tuning Scale: Analogue Output: 650mV Year: 1980 420 x 230 x 90 mm Weight: 5 kg