Sony TC-20

The TC-20 was a car stereo cassette tape recorder manufactured by the Sony Corporation. It came with the SS-1 speaker system, which had 4 ¾ -inches diameter speakers with 3.2-Ω impedance. The power output was 6-watts per channel, and the circuitry consisted of 25 transistors, 7 diodes, and 1 thermistor.