It is a self-made control amplifier that uses ALPS HQPRO double volume and has a built-in phono equalizer for MC (phono 1). It's not flashy, but it's a tone you won't get tired of. ※Phono 2 cannot be used because it is not wired, but the operation of the other inputs has been confirmed (Fujisawa Yukishi)
Maintenance information: 2023.10.4 operation confirmed (phono 2 is not wired)
Accessories: power cord, circuit diagram
Main specifications: W430 x H105 x D260 mm, weight 6.1 kg (actual measurement)
The price has been reduced! 2023/6/19 sales price 20,000 yen ※A simple test is OK, but it's cheap, so it's currently on sale. Details of a clean preamp with only volume are unknown (Mizusaki Ryo)
Main specifications: W300 x H62 x D300 mm 3.1 kg (actual measurement)
※Simple tests are OK, but since they are inexpensive, they are currently sold. The power supply unit is separate, and there is only 1 input/output system. Details unknown (Oikawa Tetsuji)
Maintenance information: 2023.6.19 operation confirmed
Main specifications: main unit W190 x H75 x D175 mm 1.1 kg (actual measurement) power supply unit W135 x H135 x D223 mm 6.8 kg (actual measurement)
The disposal price has been reduced! (Member discounts are not applicable) 2023/10/4 sales price 45,000 yen This is a self-made control amplifier with a built-in MC phono equalizer. It's not flashy, but it's a timeless sound. The operation of each input has been confirmed. There is a scratch on the top plate (Fujisawa Yukishi)
Maintenance information: 2023.10.4 operation confirmed
Accessories: power cord, circuit diagram
Main specifications: W330 x H70 x D230 mm weight 4.2 kg (actual measurement)
※Simple tests are OK, but since they are inexpensive, they are currently sold. A separate power supply unit, 1 input system, and 2 output systems. Details unknown (Oikawa Tetsuji)
Maintenance information: 2023.6.19 operation confirmed
Accessories: power supply unit
Main specifications: main unit W250 x H100 x D230 mm 1.4 kg (actual measurement) power supply unit W180 x H80 x D160 mm 2.6 kg (actual measurement)
Yamaha's popular thin preamp has been refreshed by thoroughly replacing deteriorated parts such as electrolytic capacitors. The sharp treble allows you to clearly see the shadows of the sound, has excellent phono performance, and is an excellent product even when used as an equalizer amplifier. Serial 02022 (Hiroki Aso)
Maintenance information: 2022.12.5 Maintained (condenser replacement, diode replacement, semi-fixed resistor replacement, full volume and switch disassembly, contact disassembly, cleaning of the deteriorated part of the solder surface of the board, performed input/output waveform confirmation, and a comprehensive operation test by connecting the left and right balance checks were performed to confirm normal operation by connecting the power amplifier)
Accessories: copy of instruction manual
Main specifications: PHONO2 system (MC compatible) line system 3 system tape system 2 system frequency characteristics MC, mm/20 Hz to 20 kHz aux others/10 Hz to 100 kHz W435 x H74 x D353 mm 8 kg
The price has been reduced. 2023/6/9 sales price 49,800 yen A control amplifier that inherits the sound of Yamaha's famous C2a. A highly reliable phono equalizer is used, so you can enjoy both MM/MC. It has a clean sound typical of Yamaha, and it makes the outline of the sound clear. The exterior has dullness and insulator marks. Serial E052015 SU (Yonejima Satoshi)
Maintenance Information: 2023.6.9 Operation confirmed
Accessories: copy of instruction manual
Main specifications: 3 line inputs, 3 tape terminals, 1 phono input system (MM/MC), W438 x H86 x D405 mm, 8.8 kg
Maintained! ※Remote is out of stock. A control amplifier that inherits the sound of Yamaha's famous C2a. It uses a highly reliable phono equalizer, so you can enjoy both MM/MC. It has a clean sound typical of Yamaha, and it clarifies the outline of the sound. There is dullness and small scratches overall (Sasaki Shota)
Maintenance information: 2023.12.8 maintenance completed (input board, power supply circuit board, etc., all fixed due to soldering deterioration. Volume and switch type disassembly contacts corrected. I/O pin jack polish)
Accessories: copy of instructions
Main specifications: 3 line inputs, 3 tape terminals, 1 phono input (MM/MC), W438 x H86 x D405mm, 8.8 kg
A high-end control amplifier developed by Yamaha to commemorate its 100th anniversary. Analog signals can also be converted into digital signals by incorporating an A/D converter and can be digitally controlled via DEQ and DSP. It is firmly built in the core of 25kg while pre-. *Phonoico is not installed. Appearance, there are small scratches, thin thread. Serial E015296XZ (Satoshi Yonejima)
Maintenance Information: 2021.4.30 Operation confirmed
Accessories: Remote control, instruction manual
Main Specifications: DSP Internal Parametric Tone Control Non-Contact VCA Volume W475×H177 × D442mm 25kg
*June 22nd, 2016 - Maintenance complete (Replacement of capacitors, semi-fixed resistors, and fuses, cleansing of all switches and knobs, re-soldering and cleansing of circuits, and overall check)
*No accesories
I cut the price. 2021/7/7 selling price 99,800 yen* Remote control shortage. A control amplifier that supports digital inputs in addition to analog inputs. It has a simple mechanical design, and sound quality that is typical of Yamaha with a relaxed and highly transparent sound. There is a slight feeling of use. Serial E020859PR (Itsuro Mizushima)
Maintenance information: 2021.7.7 operation confirmed
Accessories: Copy of instruction manual ※ remote control missing
Main specifications: 8 digital inputs PHONO (MM/MC) 18Bit operation Twin D/A converter built-in W473 × H130 × D400mm 12.2 kg