PIONEER QX747 QUADRAPHONIC RECEIVER. Used. Standard ship.STEREO RECEIVER (1973-1976)All inputs tested, played – sounds excellent, Controls and switches cleaned LEDs installed. Presents very well with slight wear to the chassis, but unit is in nice condition overall for its age. Great sounding receiver by Pioneer. Power output: 40W/ch (stereo), 20W/ch into 8Ω (quadraphonic)Frequency response: 10Hz to 25kHzTotal harmonic distortion: 0.5%Damping factor: 35Pro packaged, insured and includes tracking. No accessories. No PO Boxes. Thank you.