The deteriorated capacitors and transistors were thoroughly replaced and refreshed. Plus, a full overhaul of speaker terminals and RCA terminal replacements! The BA-2000 was created to reproduce the sound of music itself. The low-frequency sounds are amazing power amplifiers! I get the feeling that the piano is bouncing and the saxophone is approaching from below. Please experience this feeling (Murakoshi Yoichi)
Maintenance information: 2022.10.24 maintenance (transistors, electrolytic capacitors, SP terminals, rectifier diodes, fuse resistors, cement resistors, fuses, relays, LED lamps, heat dissipation sheets exchange. Volume decomposition contact cleaning. Idle current adjustment, input/output waveform check, left and right balance check, load test, comprehensive operation test, input/output waveform confirmation, load test (1kHz sine wave, 8Ω load: 110W+110W, OK), sound output test.)
Main specifications: 110W+110W W460 x H176 x D415 mm 18.3 kg
The price was significantly reduced. 2021/10/23 Selling price 148,000 yen A power amplifier with a low frequency of ringing is a masterpiece. The power supply unit uses a left/right independent two-winding toroidal transformer, and a high-capacity silicon rectifier and a large capacity electrolytic capacitor constitute a powerful power supply. I get the feeling of bouncing the piano system and the saxophone approaching from below. Please experience this feeling by all means. Serial 246120957 (Hirotsugu Kondo)
Maintenance information: 2021.10.20 operation confirmed
2020.10.2 Maintained (transistor, condenser, resistor, heat dissipation sheet, semi-fixed resistor replacement. Offset, idle current adjustment. (Check input/output waveform, left and right balance check, load test, and comprehensive operation test to confirm normal operation)
2016.11.12Maintained (power circuit transistor replacement. Power amplifier circuit transistor replacement. Meter circuit transistor replacement. Meter lamp replacement Relay replacement Switch, volume cleaning. Comprehensive adjustment. Confirm that there is no wobble of the RCA pin, speaker terminal, etc. Check that the scale position and height of the Knob are correct. volume, check switch. Check input/output waveforms. (Sound out test)
Accessories: None
Main specifications: 110W+110W W460 × H176 × D415mm 18.3kg
We replaced 56 deteriorated capacitors and 3 transistors and performed full maintenance. In addition, a full overhaul of speaker terminals and RCA terminal replacement! The BA-2000 was born to reproduce the sound of music itself. The sound of the low frequency is a power amplifier that is a masterpiece. I get the feeling of bouncing on the piano and the feeling that the saxophone is approaching from below. Please experience this feeling by all means. There is a light bruise in the center of the front panel top surface. (Eiji Tamura)
Maintenance information: 2022.2.11 Maintained (power transistor (successor), electrolytic capacitor, transistor, SP terminal, rectifier diode, fuse resistor, cement resistor, fuse, Relay, lamp replacement. Gain volume disassembly contact repolishing, oxidation and sulfidation prevention grease application. Input and output waveform confirmation, load test (1kHz sine wave, 8Ω load: 110W+110W, OK), sound output test)
Accessories: No accessories
Main specifications: 110W+110W W460 × H176 × D415mm 18.3kg
Deteriorated capacitors and transistors were thoroughly replaced in 2022/10, and a full overhaul including speaker terminals and RCA terminal replacements has been completed! The BA-2000 was created to reproduce the sound of music itself. A power amplifier with lots of low-frequency sounds. You get the feeling of a piano bouncing and a saxophone coming from below. Please experience this feeling. Line scratches, top surface rust, and dullness are scattered on the front panel corner (Kobayashi Hitoshi)
Maintenance information: 2022.10.24 Maintained (transistor, electrolytic capacitor, SP terminal, rectifier diode, fuse resistor, cement resistor, fuse, relay, LED lamp, heat dissipation sheet replacement. Volume disassembly contact cleaning. Idle current adjustment, input/output waveform confirmation, left/right balance check, load test, comprehensive operation test, input/output waveform confirmation, load test (1kHz sine wave, at 8 ohm load: 110W+110W, OK), sound output test.)
Accessories: none
Main specifications: 110W+110W W460 x H176 x D415 mm 18.3 kg
Maintained! A rare model is in stock. Impressive heavyweight and giant toroidal transformers, custom-made power transistors, etc. It takes my breath away when I look at the internal parts. I like the way it was made by simply putting volume into the direct attack method rather than bringing out new innovations. The unwavering sense of power is not a step away even when compared to dreadnought models from foreign brands. There is a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance Information: 2023.11.12 Maintained (input pin jack shaft fixed. Input selector switch, LEVEL switch disassembly contact polishing. Speaker relay replacement. Replace the capacitor in the power amplifier. Protector Transistor Replacement Meter lamp replacement. (Overall adjustment)
Accessories: instruction manual
Main Specifications: Rated Output (20Hz to 20kHz): 300W+300W (8Ω) Harmonic Distortion Ratio: 0.003% (20Hz to 20kHz) Mixed Modulation Distortion Ratio: 0.003% (60Hz: 7kHz) Frequency Characteristics: DC to 300kHz+0-3dB Input Sensitivity/Impedance: Normal: 1V/15kΩ Balanced: 2V/10kΩ Slew Rate: ±300V/μsec Rise Time: ±0.5μsec SNR: 120dB TIME distortion: below measurement limit value Envelope distortion: below measurement limit value W474 × H215 × D500 mm 46 kg
The price has been reduced! 2023/1/30 sales price 250,000 yen 2021.3.18 Maintained! A separate power amplifier from Sansui that has an excellent sense of volume and driving power in the low frequencies. It is a masterpiece created by putting in the highest quantity of materials at the time. It's a low frequency with a sense of scale that can't be heard with modern amplifiers, and JBL's 4343 class speakers can drive with plenty of room. On the exterior, there are scratches on the top plate and peeling of the wood part. Serial 216030010 (Satoshi Yonejima)
Maintenance information: 2023.1.30 operation confirmed 2021.3.18 maintained (power amplifier, flat amplifier adjustment volume replacement. Power amplifier diode replacement. Input switch disassembly contact polishing. Overall adjustments. DC drift will inevitably occur due to fluctuations in time, temperature, power supply, etc. adjusted to the best point) 2021.12.26 Maintained (transistor in flat amplifier, diode replacement. Switch and volume cleaning. (Overall adjustment)
Accessories: copy of instruction manual
Main specifications: with balanced input, digital meter effective output 300W+300W (8Ω) 880W+880W (2Ω) dimensions W474 x H215 x D498 mm weight 36 kg
Maintened! Sansui's separate power amplifier with outstanding low volume and driving force. It is a masterpiece made by putting the best volume of the time. JBL's 4343 class speakers also drive with plenty of energy that cannot be heard with recent amplifiers. Appearance, there are top line scratches and wood part peeling etc. Serial 215040025 (Satoshi Yonejima)
Maintenance Information: 2021.5.15 Maintenance (Transistor replacement in flat amplifier, diode replacement. Power circuit resistor replacement. Input switch disassembly contact polishing. (DC balance, bias current adjustment)
Accessories: Instruction manual copy
Main specifications: Balanced input available, digital meter effective output 300W+300W (8Ω) 880W+880W (2Ω) Dimensions W474 × H215 × D498mm Weight 36 kg