You can find these solid state Sansui 7's for $100 to $300 in great or like new condition. 47W per channel into 8 ohms. Specifications: Continuous RMS Power (each channel driven) 47W per channel 8Ω @1,000Hz. Frequency response: 15Hz to 40kHz Total harmonic distortion: 0.3% Damping factor: 50 Input sensitivity: 2.5mV (MM), 150mV (DIN), 150mV (line) Signal to noise ratio: 70dB (MM), 80dB (line) Channel separation: 50dB (MM), 50dB (line) Output: 150mV (line), 30mV (DIN), 0.8V (Pre out) Speaker load impedance: 4Ω to 16Ω Semiconductors: 72 x transistors, 42 x diodes, 4 x zener diodes, 1 x IC Dimensions: 17.32” x 5.51” x 12.91” Weight: 31.5 lbs. Made: 1973-75/ Sold @ $469 .