The price has been drastically reduced. 2025/5/2 sales price 798,000 yen Maintained! The original Model 7 I've been longing for. Serial 12604. You can enjoy a glossy mid to high range sound with a high sense of transparency and a thick, exquisite balance. It is a model that has been on sale for over half a century, but it is still one that analog fans admire. The glossy and indescribable tone is an appeal that cannot be enjoyed on modern devices (Wang Zhan)
Maintenance information: 2025.5.2 Maintained (The internal capacitor has already been replaced with Black Beauty, and since there was no problem with the capacity, the capacitor was used as it is. 4 additional short pins. AC cord is cracked and replaced. Missing bottom negative screw added. Vacuum tube socket and RCA jack caulk repair. Operation has been checked with AC 100 to 117 V)
Accessories: none
Main specifications: tubular control amplifier using ECC83/12 AX7 x 6 vacuum tubes, 3-stage NF equalizer, NF type step switching control W453 x H185 x D267 mm 7.5 kg
The price has been drastically reduced! 2025/3/22 sales price 118,000 yen Maintained! QUAD is a power amplifier that combines a wide range and a high sense of SN to the traditional high texture of the sound. Equipped with QUAD LINK, system control is also possible. Extremely practical quality can be obtained from its compact size. There are scratches and marks on the exterior. Serial 99SG0104 (Yamato Yuki)
Maintenance information: 2025.1.17 Maintained (internal parts Tr and CR checks OK. Pin jack position cleaning due to large INPUT rotary torque. Operation check OK)
Accessories: power cable
Main specifications: input RCA/QUAD-LINK: 1 system each input impedance: 33k ohms, input sensitivity: 775mV (RCA input), 1 output system (banana plug can be used), maximum output: 90W/8 ohm, 120W/4 ohms S/N ratio 110dB (20Hz-20kHz) frequency characteristics 3Hz-50kHz external dimensions H70 x W321 x D310 mm mass 6.25 kg
The price has been drastically reduced! 2025/4/27 sales price 118,000 yen The ES9038Q2M is used as the MQA-CD compatible half-size CD player DAC chip. The resolution is high, the sense of sound localization is excellent, and the arrangement of instruments and the overlap between the front and back are accurate. The large insulator, which is half size yet has a strong presence, is impressive. The exterior is generally good with no conspicuous scratches other than minor spots on the back of the side plate. Serial WE0459 (Takahashi Nobuyuki)
Maintenance information: 2025.4.27 operation confirmed
Accessories: remote control instruction manual, power cable, original box
Main specifications: MQA-CD compatible 1 analog output system (RCA), 2 digital output systems (coaxial/optical) with clock input W210 x H71 x D250 mm approx. 2.7 kg
A headphone amplifier with a built-in DAC that uses a discrete 24-bit R2R developed independently as the DAC circuit. The resistance ladder type electronic potentiometer enables precise volume adjustment. The maximum driving power of 1300 mW reproduces sound details in detail. The exterior is good with no conspicuous scratches (Takahashi Nobuyuki)
Maintenance information: 2025.4.27 operation confirmed
Accessories: instruction manual, AC adapter connection cable, original box
Main specifications: digital input USB Type C 1 system RCA coaxial 1 system TOS optical 1 system digital output RCA coaxial 1 system (RCA coaxial input and exclusive) headphone output 4.4 mm balance 1 system 6.35mm single-ended 1 system compatible sampling rate USB: PCM 384 kHz/32 bit, DSD 256 (Native) RCA coaxial: PCM 192 kHz/24 bit TOS light: PCM 96kHz/24bit output 460mW (single-ended, at 32Ω load/ THD+N < 1% /high gain) 50mW (single-ended, at 300Ω load/ THD+N < 1%/high gain) 1300 mW (balanced, at 32Ω load/ THD+N < 1%/at high gain) 220mW (balanced, at 300Ω load/ THD+N < 1%/high gain) Recommended headphone impedance 8 to 350 ohms W147xD133xH32.3mm approx. 420 g
The price has been reduced. 2025/5/11 sales price 49,800 yen It is in good condition with no conspicuous scratches! This model is a further evolution of Fiio's SP3 active speaker. It is compatible with Bluetooth and digital input. The clear sound is attractive. There is pain in the original box (Daiki Goto)
Maintenance information: 2025.5.11 operation confirmed
Accessories: manual, power cable, connection cable, original box
Main specifications: Playback frequency band 65 Hz to 40 kHz impedance 8Ω compatible sampling rate/bit rate 44.1 kHz, 48 kHz, 96 kHz/24 bit (USB/TOS optical/RCA coaxial W120 x H163 x D132 mm weight 1.9 kg
The disposal price has been reduced. Member prices are not applicable. 2025/2/2 sales price 398,000 yen Maintenance completed! Mark Levinson mid-range power amplifier. It is popular because it makes a lot of noise. Circuits for the left and right channels, including the power supply unit from the input terminal to the output terminal, are separated and configured independently. The driving power and subtlety that makes a large speaker play lightly, and the thick sound that feels good to listen to even in Madrigal Levinson are attractive. The exterior is dull and has a feeling of use (Oikawa Tetsuji)
Maintenance information: 2025.1.19 Maintained (replacement of 4 transistors, 45 capacitors and other deteriorated parts, DC voltage, DC offset voltage, idling current, and other adjustments)
Accessories: instruction manual, power cable, short pin
Main specifications: 200W+200W (8Ω) 400W+400W (4Ω) 800W+800W (2Ω) bi-wire compatible input/RCA x 1 · XLR x 1 W446 x H262 x D479 mm 58 kg
Refresh by replacing the main volume, replacing deteriorated capacitors, etc.! It is a model that was sold between the first stereo preamp C20 and Tubyu's last preamp C22, and was only sold for a very short period of time. The highly perfected sound made during the maturity period of vacuum tube amplifiers, which is a bit different from C20 and C22, is attractive (Sasaki Shota)
Maintenance information: 2025.5.16 maintained (main volume replacement and extension shaft added/block capacitor 40/20 μF etc. deterioration replacement 2, 40 μF deterioration replacement, wire loss countermeasures → lead wire replacement 16, switching noise reduction measures → 1/4 W additional resistor, 6 additional spark killers, 2 additional short pins, vacuum tube socket and RCA jack caulk repair
(*Operation has also been checked with AC 100 to 117 V)
Accessories: none
Main specifications: use ECC83 x 6, W388 x H179 x D360 mm, weight 7.46 kg
It has been refreshed and maintained with attention to detail, such as replacing transistors and capacitors, disassembling and cleaning switches, etc. It is a diamond called Rifu Yamaha FET that shows off its excellent purity and transparency. With this brush-up, the sharpness of standing up and the firmness of the sound have been completely revived, and you can enjoy the Yamaha sound you are aiming for. On the exterior, you can see a feeling of use such as dullness and scratches. Serial 09687 (Takahashi Nobuyuki)
Maintenance information: 2025.5.16 maintained (front operation part push SW disassembly cleaning front operation part board/VOL board indirect point correction volume contact cleaning power supply SW disassembly cleaning/grease up transistor migration occurrence point repair electrolytic capacitor 20% capacity change parts replacement back slide SW disassembly contact cleaning power supply/protection LED board back cushion replacement AC Cable cleaning, RCA terminal/AC plug cleaning, exterior cleaning, idling adjustment, DC balance adjustment, inspection of each part)
Accessories: copy of instruction manual
Main specifications: output 100W+100W (8Ω) SNR 115dB W436 x H151 x D370 mm 26 kg
Full maintenance down to the details such as deteriorated capacitors, resistor replacement, and main volume overhaul! Half a century later, the vintage MC30 is still loved. The sharp high range and thick low to mid range sound are nothing short of wonderful. Since the left and right sides come out clearly without interference, you can feel a better sense of localization than a stereo machine. The excellent separation unique to mono amplifiers stands out, and everything from jazz to classical music can be played well. There are old scratches, stains, and rust (Sasaki Shota)
Maintenance information: 2025.5.16 maintained (◎ common · main volume contact repair · vacuum tube 6L6G distortion replacement 1 x 2 (2025.4.30 paid goods arrived) · AC socket domestic → AC cord included replacement 1 x 2 · block capacitor 35/85/15 μF defective and deterioration replacement 1 x 2 · electrolytic capacitor 100 μF deterioration replacement 1 x 2 · vacuum tube socket and RCA jack caulk repair ◎ No. 6E400 · Vacuum Tube 12BH7 Deterioration Exchange · Vacuum Tube 12AU7 Deterioration Replacement (2025.4.30 Delivery Arrived) · Oil Capacitor 0.22 μF Deterioration Exchange ◎ No. 6E399 · Choke Defect Replacement (substitute with a resistor) · Resistors 2W and 1/2W Deterioration Replacements 2
(*The guide pin of the 5U4G rectifier tube is broken, but there is no problem with performance)
Accessories: none
Main specifications: rated output 30W, input sensitivity 0.5V vacuum tubes 6L6GC x 2, 5U4 x 1, 12AX7 x 2, 12BH7 x 1, 12AU7 x 1, W356 x H203 x D203 mm, weight 15.8 kg
※Inexpensive because of the cigarette smell. Current model of RCA cable 1.0 m pair wire world entry class interconnect. Uses Silver-plated OFC as the conductor, Composilex 3 as the insulator, and a simple DNA Helix Design devised for Solstice for the internal structure (Murakoshi Yoichi)
Maintenance information: 2025.5.16 continuity confirmed
Accessories: none
※Inexpensive because of the cigarette smell. RCA cable 1.0 m pair This cable thoroughly pursues air insulation to suppress the effects of static electricity. We have developed an ultra-low loss high foam insulator and realized a structure to prevent electrification. The sound quality is flat and easy to listen to (Murakoshi Yoichi)
Maintenance information: 2025.5.16 continuity confirmed
Accessories: none
An introductory model for RCA cable 1.0m pair audio quest. PSC conductors are used. It is a clear, delicate, and cost-effective cable (Murakoshi Yoichi)
Maintenance information: 2025.5.16 continuity confirmed
Accessories: none
Phono cable 1.5m RCA-RCA audio quest phono cable It has a balanced structure and solid PSC conductors, and boasts high cost performance. The degree is generally good (Murakoshi Yoichi)
Maintenance information: 2025.5.16 continuity confirmed
Accessories: original box
※Inexpensive because of the cigarette smell. Achieves high S/N by implementing thorough noise countermeasures from the 1.0 m pair of RCA cables to the outer sheath (Murakoshi Yoichi)
Maintenance information: 2025.5.16 continuity confirmed
Accessories: none
※Inexpensive because of the cigarette smell. The 1.0 m pair conductor of the RCA cable uses OFC and silver multi-session wires and uses TDC (Time Different Control) technology, which is the biggest characteristic of real cables. There is a feeling of use (Takasaki Atsushi)
Maintenance information: 2025.5.16 continuity confirmed
Accessories: none
※Inexpensive because of the cigarette smell. RCA cable 1.0m pair is a popular single wire cable from Acoliba. This model uses OFC (oxygen-free copper) with impurities removed in microns as the material, and uses a Teflon insulation shield at a low price. The sound is straight and has a sense of pressure (Murakoshi Yoichi)
Maintenance information: 2025.5.16 continuity confirmed
Accessories: none
L/R set of 2 unopened RCA audio plugs for high-level users equipped with a revolutionary mechanism unique to Neutrik. Noise generation during connection, which is a fateful drawback of conventional pin plugs, has been overcome by making the cold side come into contact first (Murakoshi Yoichi)
Accessories: none
L/R set of 2 unopened RCA audio plugs for high-level users equipped with a revolutionary mechanism unique to Neutrik. Noise generation during connection, which is a fateful drawback of conventional pin plugs, has been overcome by making the cold side come into contact first (Murakoshi Yoichi)
Accessories: none
L/R set of 2 unopened RCA audio plugs for high-level users equipped with a revolutionary mechanism unique to Neutrik. Noise generation during connection, which is a fateful drawback of conventional pin plugs, has been overcome by making the cold side come into contact first (Murakoshi Yoichi)
Maintenance Information: Unopened
Accessories: none
L/R set of 2 unopened RCA audio plugs for high-level users equipped with a revolutionary mechanism unique to Neutrik. Noise generation during connection, which is a fateful drawback of conventional pin plugs, has been overcome by making the cold side come into contact first (Murakoshi Yoichi)
Accessories: none
Main specifications: Contacts: gold-plated, compatible with 3.0 mm to 7.3 mm outer diameter cables (compatible up to 8.0 mm by using CNF-9)
The price has been reduced! 2025/4/28 sales price 398,000 yen 2004 version MC275 replica. A power switch and 3P inlet have been added to this model, and the internal design has also been completely renewed. It's easier to use, clear, and has a wider sound field than previous replica models, but the sense of power it exudes is still alive and well. This is a versatile amplifier that can be used not only for jazz but also for classical music. Externally, there is a scratch on the hood cover. Serial JVN1005 (Fujisawa Yukishi)
Maintenance information: 2025.4.28 Operation confirmed
Accessories: instruction manual, power cord, bonnet
Main specifications: KT88 push-pull input 2 systems (XLR/RCA) 75W+75W (4/8/16Ω) mono 150W (2/4/8Ω) W405 x H210 x D305 mm 29.1 kg
Maintained! It's a control amplifier that shows incredible performance that exceeds its price. The transparent sound is reminiscent of a crystal, and it also makes you feel the strength of a firm skeleton. The beauty of female vocals and the detailed expression of a full orchestra demonstrate outstanding abilities. As for the exterior, there are stains on the front panel. Serial 20015 (Yonejima Satoshi)
Maintenance information: 2025.5.10 Maintained (main volume disassembly, cleaning, reassembly, reinstallation, solder check. Screw replacement. (Voice check for each input/output)
Accessories: power cable
Main specifications: input RCA7 system, XLR1 system output XLR1 system, RCA1 system W430 x H108 x D445 mm weight 22 kg