SANSUI QRX 5500SpecificationsTuning range: FM, MWPower output: 27W/ch into 8ohms(quadraphonic)Frequency response: 30Hz to 30kHzTotal harmonic distortion: 0.3%Damping factor: 40Input sensitivity: 2.5mV (mic), 2.5mV (MM), 100mV (DIN), 100mV (line)Signal to noise ratio: 70dB (MM), 80dB (line)Output: 100mV (line), 30mV (DIN)Speaker load impedance: 4¿ to 16¿Semiconductors: 136 x transistors, 5 x FET, 80 x diodes, 6 x zener diodes, 3 x ICDimensions: 203 x 594 x 370mmWeight: 21.6kgYear: 1973