Sansui AM/FM 4 channel stereo receiver model QRX-7001. From 1974 - 1976. Rated at 35 Watts per channel RMS X4 into 8 ohms. Features, two tape in/outputs (monitors), one phono input, one aux input, loudness on/off, high and low filters on/off, 2-channel direct back and front, ossynthesizer hall and surround, qs and sq, cd-4/4 channel direct, cd-4 separation left and right, bass and treble front and back controls, balance front/back and left/right controls, front and back phones outputs, and both tuning and signal meters. Neat receiver!!