AV surround amplifier pursuing sound quality and operability for full-fledged AV surround. Original price was ¥99,800 (around 1988) Operation confirmed. Sound output confirmed. Video not confirmed. The appearance has a missing knob on the bottom. The sound is powerful and I think it sounds good. Model: AV Surround Amplifier <Amplifier Section> Rated Output Vintage Speaker Vacuum Tube Amplifier Front: 100W + 100W (6Ω, 20Hz～20kHz, 0.009%) 80W + 80W (8Ω, 20Hz～20kHz, 0.05%) Rear: 30W + 30W (6Ω, 1kHz, 0.3%) Maximum Effective Output (EIAJ) Front: 135W + 135W (6Ω) Rear: 45W + 45W (6Ω) Total Harmonic Distortion 0.002% (1kHz, CD, 8Ω) Intermodulation Distortion (60Hz:7kHz = 4:1) 0.009% (at rated output, 8Ω) Frequency Response Phono: 20Hz～20kHz ±0.3dB Overall (Line→Speaker): 5Hz～100kHz +0 -3dB Output Bandwidth (distortion rate 0.05%, 8Ω) 5Hz～45kHz (at rated output) Phono MM: 2.5mV/47kΩ DAT, CD, Tuner, AUX, Tape Play: 150mV/47kΩ Phono Maximum Allowable Input MM (1kHz, THD 0.02%): 145mV (Phono→Tape rec) Output Level/Impedance Tape Rec (pin): 150mV/2.2kΩ <Video Section> Television System NTSC system, 525 lines 60 fields Rated Input Level/Impedance 1Vp-p/75Ω S-terminal Input Level/Impedance Luminance signal: 1Vp-p/75Ω Color difference signal: 0.3Vp-p/75Ω Rated Output Level/Impedance 1Vp-p/75Ω S-terminal Output Level/Impedance Luminance signal: 1Vp-p/75Ω <General> Power Supply AC100V, 50Hz/60Hz Rated Power Consumption (Electrical Appliance and Material Safety Law) 260W Power Outlet Power switch interlocked: 2, 100W Power switch not interlocked: 1, 400W External Dimensions Width 440 x Height 159 x Depth 425mm Weight 13.7kg