Superscope AM/FM stereo system with 8 Track player model RT-840. Made by Marantz. From the late 1970s. Integrated systems usually run from 10 to 30 watts per channel. Features, one phono input, one tape in/output, one auxiliary input, loudness on/off, muting, speaker selector system one and two, tuning meter, and separate bass mid and treble controls.