Pioneer SX-1980 (270W/Ch)

Description
The Pioneer SX-1980 is an AM/FM stereo receiver with a unique quartz-lock on station frequency which is immune to time and temperature drift, even better then AFC.
It features outputs for 3 sets of loudspeakers, 3 cartridge impedance and capacitance settings for the phono input, 2 tape inputs/outputs for tape duplication, exclusive Pioneer twin tone controls with tone defeat switch and many more outstanding features.
Specifications
Tuning range: FM, MW
Power output: 270 watts per channel into 8Ω (stereo)
Frequency response: 5Hz to 80kHz
Total harmonic distortion: 0.03%
Damping factor: 40
Input sensitivity: 7.5mV (mic), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 87dB (MM), 100dB (line)
Output: 150mV (line), 2V (Pre out)
Semiconductors: 12 x FET, 11 x IC, 130 x transistors, 84 x diodes
Dimensions: 560 x 211 x 497mm
Weight: 35.4kg
Accessories: FM T-type antenna
Year: 1978