Realistic (Radio Shack) quad 4 channel stereo receiver model QTA-753. Manufactured by Foster Electronics. This stereo was sold in the years 1976 -1980. Features, tuning meter, one tape monitor, tape front and rear in/outputs, one phono input, one aux front and rear input, CD 4 front and rear inputs, discrete, matrix SQ, Quatravox, stereo, stereomax, mono selectors, muting on/off, auto-m on/off, loudness on/off, separate bass and treble controls, two turnover front and rear phones outputs, and volume front and rear sliders with balance controls. Great stereo receiver.