Sony AM/FM stereo receiver model STR-7015. From 1976 - 1981. Rated at 15 watts per channel. Features, one tape in/output, one phono input, one aux input, loudness on/off, muting on/off, mono on/off, separate bass, and treble controls, mic input, functions - aux - phono - FM - AM - mic, stereo phone output, for head phones, and a tuning meter.