Replaced deteriorated parts and refreshed! A power amplifier with an eye-catching black and large power meter typical of Sansui. It entertains me with the powerful feeling that can be felt from the appearance and the sound quality that stretches and stretches supple (Fujisawa Koshi)
Maintenance Information: 2022.1.20 Maintained (first stage FET, electrolytic capacitor, black film, semi-fixed resistor, rectifier diode, heat dissipation sheet for power transmission, cement resistor, fuse resistor, temperature guarantee Replace Varistor, SP Relay, SP Terminal, Lamp, Fuse, EI Connector SP selector switch, gain VOL disassembly cleaning Circuit adjustment, input/output waveform confirmation, meter adjustment, load test (1kHz sine wave, 8Ω load: 110W+110W, OK), sound test.)
Accessories: None
Main specifications: Left and right independent 2 power supply system Diamond differential circuit Effective output 110W+110W (8Ω) Load impedance 4-16Ω W482 × H187 × D450mm 20.3kg
Disposal prices have been reduced! (Member discounts are not applicable) 2022/6/23 sales price 128,000 yen maintenance completed! An eye-catching power amplifier with Sansui's characteristic black and large power meter. It entertains me with the powerfulness that can be felt from the way it looks, and the supple, stretchy sound quality. The exterior has dullness, scratches, rust, etc. over time. Serial 219060089 (Takahashi Nobuyuki)
Maintenance information: 2022.6.23 Maintained (both channel volumes replaced. SP relay contact failure replacement. Protector, meter board deterioration transistor, resistor, diode replacement. Degraded transistor in power supply board, resistor exchange. Replace deteriorated transistors and capacitors in the drive board. OUTPUT selector switch cleaning. Overall adjustments.)
Accessories: none
Main specifications: left and right independent 2 power supply system diamond differential circuit effective output 110 W+110 W (8 ohms) load impedance 4 to 16 ohms W482 x H187 x D450 mm 20.3 kg
* Currently sold is the Ishino Lab Master Series designed by Mr. Hirano, an engineer from the original Sansui. An X current circuit is adopted to achieve a maximum of 12W. This time, it's a custom model where you can listen to the STAX Year SP. There are no noticeable scratches on the exterior (Tamura Eiji)
Maintenance information: 2023.10.19 Operation confirmed (STAX output is unchecked)
Accessories: instruction manual, power cable
Main Specifications: 12W+12W (8Ω) W230 ✕ H95 ✕ D269mm Weight 3.6 kg
Fully restored, including the replacement of 46 electrolytic capacitors, 6 power transistors, and 21 transistors. Sansui's large output power amplifier. The sound quality that is crisp while feeling the volume of the overflowing low range is exactly one of the best for jazz-making. It's a masterpiece for the way the drum sounds, and it makes JAZZ sound solid and comfortable. If you are looking for a good old Sansui low range, this is one of the recommended cars. There are scratches on the top plate (Yosuke Kojima)
Maintenance Information: 2022.2.18 Maintained (Meter IC replacement. Socket disassembly cleaning and redo. Redo the solder of the socket and board. Offset, bias adjustment Check the input/output waveform, and redo meter adjustment. Running test (32h)) 2022.1.21 Maintained (6 power transistors, 46 electrolytic capacitors, 21 transistors, 9 resistors, 8 semi-fixed resistors, 6 diodes, (Relays 2, fuses 6, lamps 6, heat dissipation sheet replacement interior/exterior cleaning, re-soldering bias current after removal of old solder, offset adjustment various input/output check aging tested)
Accessories: none
Main specifications: 170+170W (8Ω), 340W (MONO/BTL connection/8Ω) Damping factor 100 W460 × H178 × D400mm 22.6kg
46 electrolytic capacitors, 6 power transistors, 21 transistors replaced, etc., have been fully restored. Sansui's large output power amplifier. While feeling the volume of the overflowing low frequencies, the crisp sound quality is exactly one of the best for jazz-making. The way the drums sound is a masterpiece, and it makes JAZZ sound firmly and comfortably. If you are looking for a low range of good old Sansui, this is one that I definitely recommend. There are scratches on the top plate. Serial 225116251 (Asaine Tomoho)
Maintenance information: 2022.7.21 Operation confirmed 2022.2.18 Maintained (meter IC replacement. Socket disassembly and cleaning redo. Redo solder the socket and board. Offset, bias adjustment. Check input/output waveform, redo meter adjustment. Running test (32h)) 2022.1.21 Maintained (6 power transistors, 46 electrolytic capacitors, 21 transistors, 9 resistors, 8 semi-fixed resistors, 6 diodes, 2 relays, 6 fuses, 6 lamps, heat dissipation sheet replacement replacement interior and exterior cleaning, re-soldering bias current after removing old solder, offset adjustment, various input/output confirmation aging tested)
Accessories: none
Main specifications: 170+170W (8Ω), 340W (MONO/BTL connection/8Ω) damping factor 100 W460 × H178 × D400mm 22.6kg
All aging parts (22 Mitsubishi transistors, 52 capacitors, etc.) were replaced, SW/VOL was completely disassembled, and the contacts were repolished, and oxidation and sulfide prevention measures were taken to prevent oxidation and sulfide, and assembled! Sansui's large output power amplifier. While feeling the volume of the overflowing low frequencies, the crisp sound quality is exactly one of the best for jazz-making. The way the drums sound is a masterpiece, and it makes JAZZ sound firmly and comfortably. If you are looking for a low range of good old Sansui, this is one I definitely recommend. The appearance is also a good category from the perspective of the year (Oikawa Tetsuji)
Maintenance information: 2022.7.27 Maintenance completed (all board parts replacement and re-soldering, board cleaning. SW/VOL disassembly contacts are repolished, and oxidation/sulfide prevention grease is applied. Circuit adjustment, meter adjustment, input/output waveform confirmation, load test (1kHz sine wave, 8Ω load: 170W+170W, OK), sound output test.)
Accessories: none
Main specifications: 170+170W (8Ω), 340W (MONO/BTL connection/8Ω) damping factor 100 W460 × H178 × D400mm 22.6kg
170 W + 170 W (8ohm) / 450W (8ohm) at BTL connection / dumping factor 140 (8 ohm) / SN ratio dolby over 100dB / prudence: 22.6kg / operation in good condition / given in present condition.