The disposal price has been reduced (member prices are not applicable). 2024/12/19 sales price 128,000 yen Maintained! Quad power amplifier Despite its compact body, you can enjoy a smooth, thick sound. It really goes well with speakers made in England, and makes you listen to 70s analog sound with a sense of dynamism. The exterior has stains, paint peeling, scuffs, etc. (Wang Zhan)
Maintenance information: 2024.7.26 maintenance (internal dismantling all checks, Tr, C, R checks. INPUT VOL cleaning, operation check)
Accessories: power cable, connection cable
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz W341 x H115 x D195 mm 9 kg
The disposal price has been reduced! (Member prices are not applicable) 2025/5/1 sales price 128,000 yen Input volume, RCA terminal processing, installation, etc. have been maintained! Although the Quad power amplifier has a compact body, the core is thick, and you can enjoy smooth sound. It really goes well with speakers made in England, and lets you listen to 70s analog sound with a sense of dynamism. There are exterior, feel of use depending on age, paint peeling, sticking marks, scuffs, and small scratches. Serial 2 2022 (Yamato Yuki)
Maintenance Information: 2025.1.24 Maintained (Driver Tr, IC, C replacement. Output board pattern, short correction) 2024.8.9 maintained (SP terminal replacement (original), other internal all checks, characteristic failure due to Rch power stage Tr temperature change → replacement, in-board gain setting C NG, SP limiter circuit C NG → replacement ~ operation check)
2015.8.25 Maintained (RCA terminals installed. IC, capacitor, resistor, input VR, fuse replacement)
Accessories: Power cable, copy of instruction manual
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
The price has been drastically reduced. 2025/3/20 sales price 178,000 yen Maintenance is being carried out in 2024. The third generation of the P-300 series. A MOS FET is used for the drive stage, and you can feel a sense of sharpness and transparency in the company's traditional sound. The impression is that it has been refined from the powerful and powerful sound of the first generation, and smoothness has been added. There are scratches on the top plate and small scratches in places. Serial F0Y213 (Murakoshi Yoichi)
Maintenance information: 2024.2.16 maintained (output stage, drive stage, first stage cascord part, semiconductor sorting exchange resistance exchange, semi-fixed VR replacement, solder correction, ATT disassembly, cleaning, etc., switch cleaning, heat dissipation grease exchange, bias adjustment, offset check, output voice check)
Accessories: instruction manual (copy), power cord, original box (different serial)
Main specifications: 200W+200W (4Ω) 150W+150W (8Ω) 75W+75W (16Ω) when connected to a bridge 400W (8Ω) 200W (16Ω) W445 × H160 × D373mm 22.5 kg
Maintained! The world's first stereo power amplifier to use a power MOS-FET. Supported by a large power transformer, it has driving power, and the sound unique to MOS-FET, where clarity and sex appeal coexist, is attractive. The exterior is dull and has a feeling of use (Hiura Katsuji)
Maintenance information: 2025.5.8 Maintained (power cord replacement, speaker terminal, both channel terminals, speaker relay replacement. Solder correction at the main parts of the power amplifier board. (General adjustment)
Accessories: none
Main specifications: 120W+120W (8Ω) non-cutoff circuit adopted W435 x H192 x D410 mm 26 kg
The disposal price has been reduced. 2025/5/1 sales price 448,000 yen (member price not applicable) *It is cheap because there are many scratches on the whole. NEW GENERATION LUXMAN A CLASS POWER AMPLIFIER! It has sufficient driving power and range unique to Class A. It also has resolution and instantaneous power compatible with the latest speakers, and drives large speakers lightly. It is particularly compatible with recent European speakers (Daiki Goto)
Maintenance information: 2025.5.1 operation confirmed
Accessories: Power cable (non-genuine)
Main specifications: 60W+60W (8Ω) BLT240W (8Ω) W440 × H230 × D480 mm weight 47.0 kg
The price has been drastically reduced! 2025/3/27 sales price 198,000 yen A total of 29 transistors and capacitors have been replaced, and refreshed and maintained with attention to detail, such as disassembling and cleaning switches! 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. You can see a feeling of use such as dullness and scratches on the exterior (Takahashi Nobuyuki)
Maintenance information: 2025.3.27 maintained (power supply SW disassembly cleaning, grease up front operation part push SW disassembly cleaning volume contact cleaning transistor migration occurrence point repair electrolytic capacitor replacement speaker relay disassembly, contact cleaning back slide SW disassembly cleaning power LED board back, protection board back, cushion replacement
Idling adjustment, DC balance adjustment, internal cleaning, AC cable cleaning, RCA terminal, AC plug cleaning, exterior cleaning)
Accessories: copy of instruction manual
Main specifications: output 100W+100W (8Ω) SNR 115dB W436 x H151 x D370 mm 26 kg
The price has been drastically reduced! 2025/2/20 sales price 448,000 yen A total of 69 transistors and capacitors have been replaced, and refreshed and maintained with attention to detail, such as disassembling and cleaning switches! 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 (Tamai Jun)
Maintenance information: 2025.2.4 maintained (left and right main amplifier circuit, power supply circuit, deteriorated transistor and capacitor replacement, input volume exchange, ground terminal installation, meter lamp replacement, input pin jack polish, meter level adjustment)
Accessories: copy of instruction manual
Main specifications: output 100W+100W (8Ω) SNR 115dB W436 x H151 x D370 mm 26 kg
The disposal price has been reduced (member prices are not applicable). 2025/5/1 sales price 398,000 yen Ampzilla, a masterpiece by genius James Bongiorno, has been revived to the present day. While the overwhelming driving power and intuitive sound remain the same, the freshness of the sound has been improved with the circuit design cultivated through GAS/SUMO. It is recommended not only for large speakers such as JBL, but also for those who want to add a sense of dynamism to modern high-end speakers. There are small scratches and small dents (Daiki Goto)
Maintenance information: 2025.5.1 operation confirmed
Accessories: none
Main specifications: 200W+200W (8Ω) input RCA/XLR switching W267 x H206H x D400 mm 23.8 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/4/24 sales price 448,000 yen We are carrying out maintenance including replacing 14 deteriorated capacitors in 2018. A stereo power amplifier with a traditional dual mono configuration. The overwhelming driving power and precise sound are attractive. You can enjoy the strong driving power that allows even a 38cm woofer to brake well, and the hot sound unique to Levinson of this era. Genuine Harman Serial 2607 (Murakoshi Yoichi)
Maintenance information: Maintained on 2018.4.22 (replacement of 14 deteriorated capacitors/9 deterioration resistors, replacement of shorting straps, other inspections and adjustments)
Accessories: instruction manual (copy), remo pin, power cord, balance short pin
Main specifications: stereo power amplifier, dual mono configuration, 200W+200W (8Ω), 800W (8Ω, when connected to a bridge), input impedance 50kΩ, W483 x H210 x D450mm, 40 kg
The price has been drastically reduced! 2025/4/16 sales price 99,800 yen Maintained! A commercial amplifier with a strong power supply. The thick, rich, and sinking low frequency of 300W+300W has a texture unique to professional aircraft. The powerful driving force grips the woofer firmly. It can be said that it is the perfect amplifier for large aperture units. There are scratches, paint peeling, etc. on the entire exterior. Serial 05351 ※ There is a cooling fan operating noise due to commercial use (Satoshi Yonejima)
Maintenance information: 2025.4.16 Maintained (both power switches replaced. Clean the input switch and output relay. ATT check. Bias and offset checks. Output audio check. AC120V specification (It can be operated at AC100V, but the residual hum is slightly disadvantageous)
Accessories: No accessories
Main specifications: rated output 300W+300W (8Ω) frequency characteristics 20Hz to 20kHz dimensions W483 x H178 x D356 mm weight 28.6 kg
Disposal price has been reduced (member prices are not applicable) 2025/5/5 sales price 118,000 yen Maintained! A crisp, bright, and sharp sound typical of Marantz from the 1970s. Exactly, it's an American sound on the west coast. The design is also a simple design typical of US Marantz. The exterior has a feeling of wear such as dullness and scratches over time. Serial 4180 (Yamato Yuki)
Maintenance information: 2024.3.7 maintained (single ch power stage transistor replacement driver transistor resistor replacement drive TR capacitor replacement contact polishing aging test)
Accessories: copy of instruction manual
Main specifications: 125W+125W (8Ω) W445 × H170 × D265 mm 14.8 kg
The disposal price has been reduced! (Member prices are not applicable) 2025/3/16 sales price 550,000 yen*There are many scratches and dirt, and the power cable is different on the left and right. There are no cereals either. It is inexpensive considering conditions such as lack of urethane on the fan part. A dual mono power amplifier that inherits the design concept of the No. 330L series. From channel separation with a high degree of perfection, it creates an amount of information unique to mono, with depth and thickness. It is a highly regarded model for its excellent braking feel and sound image reproduction ability (Kobayashi Hitoshi)
Maintenance information: 2025.3.10 Operation confirmed
Accessories: power cable, balance short pin (on order)
Main specifications: 125W+125W (8Ω) input 2 systems (RCA, XLR) W451 x H150 x D513 mm 25.5 kg
Maintained! Macintosh early solid state power amplifier. The rich and powerful sound unique to the vintage Mackin is full of appeal that is different from the current model. When combined with the company's C28 and C26 preamps, you can enjoy the flavor unique to vintages that are even thicker and darker. There are scratches on the upper front corner and top plate, as well as dullness and rust over time. Parallel model, 117V specification. Serial 44M8 (Kanai Hidetsugu)
Maintenance information: 2025.5.1 maintained (each SW/VOL cleaning, pin jack cleaning, 8 lamp replacement, speaker switch defect replacement, power stage Tr check, socket pin cleaning, C/ R/Tr check in output board, contact part cleaning, meter → unstable meter SW dismantling cleaning, operation check)
Accessories: instruction manual (copy)
Main specifications: output 105 W+105 W (4/6/8 ohms) LR volume control speaker switch with headphone terminal W440 x H225 x D390 mm approx. 35 kg
The price has been drastically reduced. 2025/4/13 sales price 128,000 yen Maintained! An impressive power amplifier with a large VU meter. Pursue a real phase amplifier configuration that reproduces accurate phase and sound fields. The live power supported by a strong power supply unit and the neutral, highly transparent sound are attractive (Daiki Goto)
Maintenance information: 2025.3.19 maintained (repair maintenance details/ ① power supply and other solder repairs due to solder deterioration ② LR volume dismantling and cleaning ③ output relay replacement ④ meter lamp replacement ⑤ switch disassembly polishing grease application (meter, range, speaker 1, 2, input switch) ⑥ meter board bridge diode replacement ⑦ pin jack replacement ⑧ internal inspection and cleaning, meter operation confirmation, running test)
Accessories: copy of the manual
Main specifications: 200W+200W (8Ω) real phase amplifier method W465 x H187 x D426 mm 25 kg
The price has been drastically reduced. 2025/3/12 sales price 198,000 yen A total of 79 transistors and capacitors have been replaced, and refreshed and maintained with attention to detail, such as disassembling and cleaning switches! The diamond called Yamaha FET 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 supreme Yamaha sound. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.3.12 Maintained (internal wiring fixed. Sound output check) 2025.2.24 maintained (2SK76/2SJ26 replaced due to power FET short. Replace defective parts in other main amplifier circuits. Replace deteriorated transistors and capacitors in the meter circuit. ACOUTLET processed and installed a new one. Internal dismantling and cleaning adjustments. (Meter level adjustment)
Accessories: copy of instruction manual
Main specifications: output 100W+100W (8Ω) SNR 115dB W436 x H151 x D370 mm 26 kg
Unspecified professional power amplifier. High power amplifier with 1200 W output, made in England. It is for tough field applications or for directions where a high volume is required. There are scratches and dullness on the exterior in general. Serial 391 (Yonejima Satoshi)
Maintenance information: 2025.5.6 operation confirmed
Accessories: No accessories
Main specifications: W480 x D420 x H185 mm 16.4 kg
The price has been drastically reduced! 2025/3/9 sales price 198,000 yen Every detail has been thoroughly maintained, such as replacing 93 transistors and capacitors, exchanging volumes, disassembling and cleaning switches, etc. The diamond called Yamaha FET 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. The color fading of the main body is noticeable. Serial 05937 (Fujisawa Yukishi)
Maintenance information: 2025.3.8 Maintained (replacement of deteriorated transistors and capacitors in the left and right main amplifier circuits. Replace deteriorated parts in the power supply circuit. Meter lamp replacement. Input volume exchange. Disassemble all switches and polish contacts. Input terminal polish. Electric circuit adjustment, meter circuit level adjustment. (Long time sound check)
Accessories: No accessories
Main specifications: output 100W+100W (8Ω) SNR 115dB W436 x H151 x D370 mm 26 kg
The price has been drastically reduced! 2025/4/27 sales price 118,000 yen Maintained! The rare stereo power amplifier model 32 is now in stock! American vintage sound from the good old days. The bright and firm sound quality is a perfect match for the 4311 and 4312 mid-size JBL! You can enjoy medium to low sound, which is comparable to modern amplifiers. As for the exterior, there are small scratches on the front panel and overall dullness. Serial 1437 (Yonejima Satoshi)
Maintenance information: 2025.4.27 Maintained (relay replacement, speaker terminal replacement (original not available), lamp replacement, other C, R, etc. are OK as is. Pin jack cleaning and caulking, DC offset bias adjustment, operation check (There are times when it is difficult for the relay to respond at 100V, so please use between 105 and 120 V)
Accessories: No accessories
Main specifications: output 180W+180W (8Ω) frequency characteristics 20Hz to 20kHz W390 × H146 × D203 mm weight 13.1 kg
The disposal price has been reduced! (Member prices are not applicable) 2025/1/18 sales price 128,000 yen 2024/8 maintenance completed! Quad power amplifier Despite its compact body, you can enjoy a smooth, thick sound. As expected, it is compatible with speakers made in England, and it makes you listen to 70s analog sounds with a sense of dynamism. There are peeling scratches in places and a feeling of use. Serial 6105 (Asaine Tomoho)
Maintenance information: 2024.8.6 maintained (2 Rch power Tr installed, fuse installed. C, R check. Replace the rubber feet. Operation check)
Accessories: Power cable, connection cable, copy of the instruction manual
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
The price has been drastically reduced. 2025/2/6 sales price 198,000 yen Refreshment maintenance completed with attention to details such as volume, replacement of 28 electrolytic capacitors, switch disassembly and cleaning, etc. The diamond called Yamaha FET 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 supreme Yamaha sound. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.2.4 maintained (power supply SW disassembly cleaning, grease up. Front control unit push SW disassembly cleaning. Volume exchange. Fixed the place where transistor migration occurred. Replace 28 parts with 20% capacity change in electrolytic capacitors. Speaker relay disassembly, contact cleaning. Rear slide switch disassembly and cleaning. Replace the deterioration of the cushions on the back of the power LED board and the back of the protection board. idling adjustment. DC balance adjustment. Internal cleaning. AC cable cleaning. RCA terminal, AC plug cleaning Exterior cleaning)
Accessories: copy of instruction manual
Main specifications: output 100W+100W (8Ω) SNR 115dB W436 x H151 x D370 mm 26 kg
The price has been drastically reduced. 2025/2/13 sales price 198,000 yen Maintained including replacement of 94 transistors, 33 capacitors, and 14 semi-fixed resistors! The diamond called Yamaha FET shows off its excellent purity and transparency. It is a model with superior musical expression than the late model B-2X, and the natural sound typical of Yamaha at the time is attractive. The exterior has small scratches over time, rust spots, etc. (Oikawa Tetsuji)
Maintenance information: 2024.12.26 Maintained (transistors have been replaced to some extent before. Replace drive transistors etc. that have not been replaced. Bad relay contact replacement. Switch contact polishing. Meter level adjustment amplifier circuit adjustment. Polish the input terminals, etc. (Internal dismantling and cleaning)
2017.2.6 Maintained (resistor, diode, transistor, capacitor, heat dissipation sheet, semi-fixed resistor, VR, AC cord, SP terminal replacement. RCA terminals, SW cleaning Board cleaning and re-soldering. (*The meter has deteriorated slightly)
2024.12.26 Maintained (drive transistor replacement not replaced in previous repairs. Defective relay contact replacement. Switch contact polishing. Meter level adjustment amplifier circuit adjustment. Polish the input terminals, etc. (Internal dismantling and cleaning)
Accessories: copy of instruction manual
Main specifications: 100W+100W DC amplifier configuration with peak level meter W436 x H151 x D370 mm 26 kg
*There is a gap in the VOL, but it will be sold as is. A Sony power amplifier with an affordable price and a compact body. It comes with a volume and 3 line selector switches, so it can also be used in a predominant manner. You can see a feeling of use, such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.4.27 Operation confirmed (there is a gap in VOL, which is the current situation)
Accessories: none
Main specifications: rated output 55W+55W (6Ω) MONO140W (6Ω) W470 × H120 × D265 mm 5.9 kg
The disposal price has been reduced! (Member price not applicable) 2025/2/22 sales price 398,000 yen Mark Levinson mid-size power amplifier. Genuine Harman 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 scratched on the top plate. Serial 2234 (Yonejima Satoshi)
Maintenance information: Maintained by Harman on 2014.5.14 (capacitor and resistor replaced. (Reconciliation and sound output test OK)
Accessories: instruction manual, power cord, balance 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
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 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
This is the disposal price (no membership discount) for opened items. Comes with a 5-year manufacturer's warranty. Mark Levinson dual mono power amplifier, fourth in the No. 5000 series. Equipped with a Class AB amplifier module using a direct coupling circuit with a discrete configuration, it consists of 2 high-speed driver transistors operating in Class A and an output stage of 6 260V/15A output transistors (Oikawa Tetsuji)
Accessories: instruction manual, power cable, original box, gloves
Main specifications: Rated output: 135W+135W (8Ω), 270W+270W (4Ω), [bridge mono] 275W@ (8Ω), 550W (4Ω) W438 x H145 x D527mm 31.7 kg
The disposal price has been reduced (member prices are not applicable). 2024/8/6 sales price 128,000 yen Maintained! Quad power amplifier Despite its compact body, you can enjoy a smooth, thick sound. It really goes well with speakers made in England, and makes you listen to 70s analog sound with a sense of dynamism. There is dullness and small scratches (Sasaki Shota)
Maintenance information: 2024.8.6 maintained (all internal parts checked, LCH power stage TR x 1 half short NG replacement, DC cut C replacement within the board, bottom cover rubber foot defect replacement, operation check)
Accessories: copy of manual, power cable
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg