This is a Vintage Sansui QRX-9001 Quadrophonic (4 channel) multi-functional receiver. The unit turns on and functioned as expected with all four channels when last tested several months ago.This unit has been in my private collection for over 10 years. It was last serviced 5 years ago and has been in storage 3 of the last 5 years. Due to the age of the unit, I can not guarantee the functionality of the unit. I am selling the unit AS-IS for parts or repair. ... Please review the pics carefully before bidding.The unit will be packaged and shipped professional. This unit is very heavy and the winning bidders can expect a relatively expensive shipping cost depending on the location.ONLY SERIOUS BIDDERS WELCOME! SpecificationsTuning range: FM, MWPower output: 120W/ch (stereo), 60W/ch into 8Ω (quadraphonic)Frequency response: 20Hz to 30kHzTotal harmonic distortion: 0.3%Damping factor: 30Input sensitivity: 2.5mV (MM), 100mV (DIN), 100mV (line)Signal to noise ratio: 70dB (MM), 80dB (DIN), 80dB (line)Channel separation: 45dB (MM), 45dB (line)Output: 100mV (line), 30mV (DIN)Speaker load impedance: 4Ω to 8ΩDimensions: 24" x 8" x 17" Weight: 50 lbs.