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405UK

Ask 25-48257-24595-00
405
Manufacture:QUAD
Original price: JPY 198,000
Price: JPY 98,182
UK 1975 made
Shop: Osu shop
Arrival: 2025-12-11 20:41:32
description
The price has been reduced. 2025/12/11 sales price 128,000 yen The input terminal, 4 capacitors, 7 resistors have been replaced, etc. Maintenance has been completed. 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 are scratches on the top plate and sides, paint peeling, etc. (Oikawa Tetsuji) Maintenance Information: 2025.12.11 Maintained (INPUT pin jack replaced DIN connector without wiring → rewiring TN check in both channel boards OK gain setting C, DC cut C replacement, some resistors NG → replacement) Accessories: power cable Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg

MC2300U.S.A

Ask 25-48005-22411-00
MC2300
Manufacture:McIntosh
Original price: JPY 858,000
Price: JPY 361,818
U.S.A 1971 made
Arrival: 2025-12-13 20:12:19
description
Maintained! The balance between thickness and sharpness of the sound is good, and it conveys the breath of jazz and rock. The thick sound image and rich mid-range, which cannot be enjoyed with today's amplifiers, are exquisite. The range is moderate but the Old McKinn sound has instantaneous power. The slightly smokier tone than the MC2500 is attractive. Serial 3Y916 (Fujisawa Yukishi) Maintenance information: 2025.12.13 Maintained (each replaced due to defective and deteriorated input volume, meter lamp, speaker terminal, and RCA jack. Missing screws added, damaged screws and feet replaced. SW type cleaning. Bias and offset checks. Output audio check) Accessories: copy of instruction manual, power cord Main specifications: 300W+300W (mono 600W) 0.5 to 16 ohms W483 x H267 x D432 mm 58.1 kg 

P-3000Japan

Ask 25-48376-25508-00
P-3000
Manufacture:Accuphase
Original price: JPY 390,000
Price: JPY 270,909
Japan 2004 made
Arrival: 2025-12-12 20:07:55
description
A power amplifier that inherits the direct lineage of the first P-300 when Accuphase was founded. It is easily compatible with low load impedances, and the deep, roomy playback sound is attractive. By connecting to a bridge, the driving power of the advanced P-7000 class can be reproduced. Serial I6Y537 (Hiura Katsuji) Maintenance information: 2025.12.12 sound output confirmed Accessories: power cord, instruction manual (copy) Main specifications: 75W+75W (8Ω) 300W (8Ω) single channel 3 para push-pull current feedback amplifier circuit W465 × H180 × D425 mm 24.0 kg when connected to a bridge

LA90

Ask 25-48347-25308-00
LA90
Manufacture:TOPPING
Price: JPY 58,909
Arrival: 2025-12-09 19:53:26
description
The price has been drastically reduced. 2025/12/9 sales price 69,800 yen. TOPPING's power amplifier is tuned for extremely clear and accurate sound. You can enjoy it regardless of genre. The appearance is fine, with no noticeable scratches, etc. (Kobayashi Hitoshi) Maintenance information: 2025.12.9 operation confirmed Accessories: instruction manual, original box, jumper cable, AC adapter Main specifications: stereo: 4Ω/120W 8Ω/66W mono: 4Ω/180W 8Ω/220W W220 x H90 x D205 mm approx. 3 kg (actual measurement)

TA-N86Japan

Ask 24-41621-00932-00
TA-N86
Manufacture:SONY
Original price: JPY 90,000
Price: JPY 98,182
Japan 1978 made
Shop: Osu shop
Arrival: 2025-12-05 20:12:14
description
The price has been drastically reduced. 2025/12/5 sales price 128,000 yen maintenance including replacement of 26 deteriorated electrolytic capacitors! This amplifier has a reputation for use in multiple systems. The original powerful sound, which has a wide range and is clear, has been revived. It is thin and can be used for a wide range of purposes, from sub to multi-use. There is a small dull wound (Sasaki Shota) Maintenance information: 2025.12.5 Maintained (Electrolytic capacitors, tantalum capacitors, semi-fixed resistors, and lamps will be replaced. Power switch installation correction. Transfer switch, relay disassembly contact cleaning. (We will clean the panel, rear terminals, and housing) Accessories: none Main specifications: 80W+80W (B grade) 18W+18W (A grade) DC amplifier configuration W480 x H80 x D380 mm 8.6 kg

STEREO 120U.S.A

Ask 25-47120-15520-00
STEREO 120
Manufacture:DYNACO
Original price: JPY 94,000
Price: JPY 36,182
U.S.A
Arrival: 2025-08-01 19:54:12
description
The disposal price has been reduced. Member discounts are not applicable. 2025/8/1 sales price 59,800 yen ※A trance growl will occur, but this cannot be corrected. Maintenance completed in 2019. Dinaco's transistor stereo power amplifier was developed by applying technology obtained with tubular amplifiers to semiconductor circuits. It is a sound that allows you to broadly enjoy the atmosphere without requiring precise expression of sound. There is a feeling of use (Murakoshi Yoichi) Maintenance information: 2019.8.9 maintained (internal dismantling check, LCH power stage TR/constant voltage TR characteristics defective/circuit board coupling C interruption/capacity loss → replacement, operation check OK) Main specifications: 60W+60W W330 x H104 x D260 mm 8 kg

TA-N86Japan

Ask 22-36607-45818-00
TA-N86
Manufacture:SONY
Original price: JPY 90,000
Price: JPY 98,182
Japan 1978 made
Shop: Osu shop
Arrival: 2025-12-05 20:12:11
description
The price has been drastically reduced. 2025/12/5 sales price 128,000 yen, maintenance including replacement of 27 deteriorated electrolytic capacitors! This amplifier has a reputation for use in multiple systems. The original powerful sound, which has a wide range and is clear, has been revived. It is thin and can be used for a wide range of purposes, from sub to multi-use. There is a small dull wound (Sasaki Shota) Maintenance information: 2025.12.5 Maintained (Electrolytic capacitors, tantalum capacitors, semi-fixed resistors, and lamps will be replaced. Transfer switch and relay disassemble and clean. (We will clean the panel, rear terminals, and housing) Accessories: none Main specifications: 80W+80W (B grade) 18W+18W (A grade) DC amplifier configuration W480 x H80 x D380 mm 8.6 kg

MA-7Japan

Ask 25-48317-25070-00
MA-7
Manufacture:marantz
Original price: JPY 300,000
Price: JPY 125,455(pair)
Japan 1988 made
Arrival: 2025-12-09 19:57:19
description
Marantz mono power amplifiers are in stock for the first time in about 5 years! Maintained in 2019. Marantz mono power amplifier equipped with a MOSFET output stage. Surprisingly few in stock, this is a rare gem. The sound quality is thick, powerful, and light, and the sense of density and temperature in the middle sound is excellent, especially when driving in Class A, and a sense of volume remains even at low volume levels. There is a switch that reverses the phase of the output 180° without changing the speaker connection, and it is an amplifier that pays attention to details. Externally, there is a scratch on the side. Serial MZ01732030038, MZ01732030039 (Fujisawa Yukishi) Maintenance information: 2019.12.5 maintained (S/N38, 39 joint dismantling check. SP mute relay contact polishing. Driver board internal resistance replacement. Operation check OK. (Other C and R internal checks OK) Accessories: instruction manual Main specifications: pure A grade 30W/AB grade 120W switchable power consumption 150W dimensions W208 x H163 x D359 mm weight 10 kg

D-45U.S.A

This item has been sold.You can't purchase now. 25-48312-25002-00
D-45
Manufacture:CROWN
Original price: JPY 87,000
Price: JPY 18,000 Sold Out
U.S.A
Arrival: 2025-12-08 19:38:50
description
*Currently sold. 120V specification. CROWN commercial power amplifier. It features driving power unique to professional use that lifts straight. The high braking power at high volume fully demonstrates the quality of a professional device. The exterior has small scratches and dullness. Serial 8500259025 (Hiura Katsuji) Maintenance information: 2025.12.7 sound output confirmed Accessories: none Main specifications: output 25W+25W (8Ω) 120V specification natural air cooling method W483 × H45 × D213 mm 4.5 kg

MC2500U.S.A

Ask 25-48033-22654-00
MC2500
Manufacture:McIntosh
Original price: JPY 1,180,000
Price: JPY 326,364
U.S.A 1980 made
Arrival: 2025-11-25 19:53:34
description
The price has been drastically reduced! 2025/11/25 sales price 398,000 yen Maintained! The flagship model of the Macintosh power amplifier, the black version. The heavyweight frame, fresh blue meter, and large speakers drive lightly, and the rich, rich tone are just perfect. The clarity of low frequency contours is the highest among all Mackins of all time. The exterior has age, dullness, and small scratches. Serial JCS5523 (Fujisawa Yukishi) Maintenance information: 2025.11.25 Maintained (input ATT, 10 electrolytic capacitors, lamps, ICs, and sockets replaced. Mode switch disassembly polishing cleaning. Card edge contact cleaning. Connector cleaning. Solder correction. Bias and offset checks. Output audio check) Accessories: copy of instruction manual, power cord Main specifications: 500W+500W (1000W when mono) equipped with power guard circuit W483 x D465 x H263 mm 60.3 kg

303UK

Ask 25-46780-13072-00
303
Manufacture:QUAD
Original price: JPY 110,000
Price: JPY 90,727
UK 1967 made
Arrival: 2025-09-22 20:12:03
description
The disposal price has been reduced! (Member discounts are not applicable) 2025/11/27 sales price 118,000 yen Maintained! A classic British Quad stereo power amplifier. Small in size yet full torque. The sound, which is as deep as a tube amp, exudes an appeal that won't fade. There are dullness, small scratches, etc. appropriate for the model year (Oikawa Tetsuji) Maintenance information: 2025.9.22 maintained (CA 4PIN conversion cable (1M) installation, input terminal solder repair, main amplifier part solder repair, internal inspection and cleaning, running test) Accessories: power cable, connection cable, copy of instruction manual Main specifications: 45W+45W W120×H159×D324mm 8.2 kg

303UK

Ask 25-48176-23952-00
303
Manufacture:QUAD
Original price: JPY 110,000
Price: JPY 90,727
UK 1967 made
Arrival: 2025-11-27 20:00:57
description
The price has been drastically reduced. 2025/11/27 Sales price 118,000 yen Maintained! A classic British Quad stereo power amplifier. Small in size yet full torque. The sound, which is as deep as a tube amp, exudes an appeal that won't fade. The exterior has a feeling of use over time, such as dullness and small scratches. Serial 51928 (Takasaki Atsushi) Maintenance information: 2025.11.26 Maintained (block condenser liquid leak → replaced with a replacement product because the original is not available, Lch board liquid leak scattering pattern leak → cleaning, resistance burn replacement. (Other C, R, TR check status OK, operation check) 2024.3.22 Maintained (internal all checks, Tr, C, R co-operation check*INPUT modification available, AC code created for cable creation) Accessories: power cord, instruction manual (copy) Main specifications: 45W+45W W120×H159×D324mm 8.2 kg

MC2500U.S.A

Ask 25-48033-22655-00
MC2500
Manufacture:McIntosh
Original price: JPY 1,180,000
Price: JPY 361,818
U.S.A 1980 made
Arrival: 2025-11-28 19:53:05
description
Maintained! The flagship model of the Macintosh power amplifier, the black version. The heavyweight frame, fresh blue meter, and large speakers drive lightly, and the rich, rich tone are just perfect. The clarity of low frequency contours is the highest among all Mackins of all time. The exterior has dirt scratches, etc. Serial JCS4855 (Tamura Eiji) Maintenance information: 2025.11.28 Maintained (cleaned due to power supply board pattern leak. Replace the input ATT, lamp, and ground spring. Mode switch disassembly polishing cleaning protective agent application. Card edge contact and connector cleaning. Solder correction. Bias and offset checks. I checked the output sound. (*Electrolytic capacitors have been replaced) Accessories: power cable Main specifications: 500W+500W (1000W when mono) equipped with power guard circuit W483 x D465 x H263 mm 60.3 kg

405UK

Ask 17-12670-67047-00
405
Manufacture:QUAD
Original price: JPY 198,000
Price: JPY 90,727
UK 1976 made
Arrival: 2025-11-19 19:54:52
description
The disposal price has been reduced! (Member discounts are not applicable) 2025/11/19 sales price 128,000 yen Maintained! RCA and VOL have been added, so it's easy to use. The exterior is painted black. 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 is dull and has small scratches over time. Serial 8508 (Yonejima Satoshi) Maintenance information: 2025.11.19 Maintained (internal all inspection → Lch power stage Tr, gain setting C, INPUT VOL replacement. DIN SP rewiring, first drive IC OP AMP replacement) Accessories: power cord Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg

405UK

Ask 15-88406-53658-00
405
Manufacture:QUAD
Original price: JPY 198,000
Price: JPY 90,727
UK 1975 made
Shop: Osu shop
Arrival: 2025-11-18 20:07:08
description
The disposal price has been reduced! Member prices are not applicable. 2025/11/18 Sales price 128,000 yen Maintained! Quad power amplifier Although it is a compact body, you can enjoy the sound with a thick core. In particular, it makes me listen to 70s analog sounds with a sense of dynamism. There is dullness, scratches, and paint peeling (Asaine Tomoho) Maintenance information: 2025.11.18 maintained (internal check pattern repair piece ch check) 2025.7.4 maintained (internal double channel dismantling TN check → OK. DC cut C, gain setting C, etc. exchange ~ operation check) Accessories: power cable, connection cable Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg

405UK

Ask 16-08449-23178-00
405
Manufacture:QUAD
Original price: JPY 198,000
Price: JPY 90,727
UK 1976 made
Arrival: 2025-11-18 20:07:08
description
The disposal price has been reduced! (Member prices are not applicable) 2025/11/18 sales price 128,000 yen Maintained! The QUAD405 is full of appeal and makes you listen to the whole picture of the music in a tasteful way. Along with feedforward operation, the high quality, which smoothly transitions to A class operation at low levels and B class operation when the level rises, is also worth listening to. There are scratches, scuffs, and dullness on the exterior. Serial 4546 (Jun Tamai) Maintenance information: 2025.10.12 Maintained (INPUT connector VOL lead resoldering process check) 2025.7.2 Maintained (internal all dismantling checks, Tr, C, R checks, operation checks, rubber, etc.) 2016.12.23 Maintained (Vol replacement, Rch power, Tr replacement, capacitor resistor replacement (both channels) operation check) Accessories: Connection cord, power cord, copy of instruction manual Main specifications: 100W+100W (8Ω) dimensions W341 x H115 x D195 mm weight 9 kg

MC7270U.S.A

Ask 25-47969-22035-00
MC7270
Manufacture:McIntosh
Original price: JPY 680,000
Price: JPY 270,909
U.S.A 1985 made
Arrival: 2025-11-21 19:57:31
description
Maintained! The Macintosh 7000 series stereo power amplifier was announced to coincide with the advent of the CD era. It seems to be the core model at the time, and it drives a large speaker with unique sweet and sticky sound quality, and the thick and gorgeous sound typical of the company is attractive. The exterior has a feeling of use such as dullness and small scratches. Serial JFA8923 (Tomonori Asaine) Maintenance information: 2025.11.21 maintained (power SW replacement, power stage Tr check, each SW, VOL, connector cleaning, operation check) Accessories: copy of instruction manual Main specifications: 270W+270W power guard circuit equipped with frequency characteristics 20 to 20 kHz damping factor 30 W 410 x H195 x D400 mm 37.2 kg

405UK

Ask 25-47349-17334-00
405
Manufacture:QUAD
Original price: JPY 198,000
Price: JPY 90,727
UK 1975 made
Arrival: 2025-08-31 20:06:05
description
The disposal price has been reduced. Member discounts are not applicable. 2025/8/31 sales price 128,000 yen 2023/10 maintenance completed. 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. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi) Maintenance information: 2023.10.13 maintenance completed (internal parts dismantling check, power Tr, driver Tr, etc., etc. C, R, etc. can all be checked. Burn correction due to partial heat generation on both channel board patterns. The RCA terminal, input volume installation (expansion), Din terminal, SP terminal, and block capacitor have been replaced. (The input/output waveform was checked, left and right balance checked, load tests, and comprehensive operation tests were performed to confirm normal operation.) Accessories: power cable, instruction manual (copy) Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg

MC2600U.S.A

This item has been sold.You can't purchase now. 25-47469-18181-00
MC2600
Manufacture:McIntosh
Original price: JPY 1,000,000
Price: JPY 388,182 Sold Out
U.S.A 1990 made
Shop: Osu shop
Arrival: 2025-10-20 19:58:53
description
The disposal price has been reduced (member prices are not applicable) 2025/10/20 sales price 498,000 yen Maintenance has been completed. Genuine Electri 100V specification, black model. Macintosh's high-power amplifier with stereo output and 600W on one channel. Balanced inputs are also supported, and connections to high-end class balanced amplifiers are also being considered. It is characterized by a sound with plenty of room to resonate loudly rather than being as powerful as if power was pushed to the front. There is a dull and small wound (Sasaki Shota) Maintenance information: 2025.10.20 Maintained (meter lamp off → replaced. C deterioration in the driver board → replacement. Power stage transistor check OK. Partial pattern corrosion → correction. GAIN VOL, MODESW cleaning, operation check) Accessories: copy of the manual. power cable Main specifications: 600W+600W (stereo) 1200W (mono) W483 x H267 x D457 mm 59 kg

405UK

Ask 23-89023-06845-00
405
Manufacture:QUAD
Original price: JPY 198,000
Price: JPY 90,727
UK 1975 made
Arrival: 2025-11-08 19:52:53
description
The disposal price has been reduced. Member discounts are not applicable. 2025/11/8 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 a feeling of use such as dullness. Serial 57794 (Murakoshi Yoichi) Maintenance information: 2025.11.7 Maintained (fuse replaced. Internal transistors, capacitors, resistance values, input/output waveforms, left and right balance checks, load tests, and comprehensive operation tests. Load test (1kHz sine wave, at 8Ω load: 100W+100W), sound output test. Running test 10H) 2018.5.24 maintenance completed (internal dismantling all checks, half-short leak replacement between power stages Tr x 1E-C, replacement of servo drop resistance defects in both other driver boards, operation check) Accessories: power cord, instruction manual (copy) Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg

MC7270U.S.A

This item has been sold.You can't purchase now. 25-47716-19959-00
MC7270
Manufacture:McIntosh
Original price: JPY 680,000
Price: JPY 270,909 Sold Out
U.S.A 1985 made
Arrival: 2025-10-28 20:00:24
description
Maintained! The Macintosh 7000 series stereo power amplifier was announced to coincide with the advent of the CD era. It seems to be the core model at the time, and it drives a large speaker with unique sweet and sticky sound quality, and the thick and gorgeous sound typical of the company is attractive. Exterior The top plate and knobs are dirty, and there is a feeling of use. Serial EK3998 (Murakoshi Yoichi) Maintenance information: 2025.10.27 maintenance completed (GAIN VOL dismantling and cleaning, meter display lamp replacement, meter display lamp replacement, power, meter SW internal crack → reinforcement correction, power stage Tr to C, R, Tr, etc. in the driver board OK, power supply board C deterioration replacement, operation check, partial panel peeling correction) Accessories: instruction manual (copy) Main specifications: 270W+270W power guard circuit equipped with frequency characteristics 20 to 20 kHz damping factor 30 W 410 x H195 x D400 mm 37.2 kg

405UK

Ask 16-03836-78435-00
405
Manufacture:QUAD
Original price: JPY 198,000
Price: JPY 90,727
UK 1975 made
Shop: Osu shop
Arrival: 2025-07-12 20:16:22
description
The disposal price has been reduced. Member prices are not applicable. 2025/7/12 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: 2025.7.12 Maintained (drive transistor (BD244 x 4), power transistor (MJ15024G x 1), and original differential op amp (TL071 x 2) parts were replaced. The connection cord and power cord have been attached. Input/output waveform confirmation, left and right sound pressure level checks, load tests, and comprehensive operation tests were performed to confirm normal operation) 2025.6.9 maintained (there is a pattern short in the board, poor output board mounting, capacitor deterioration, block C lead wire soldering, driver transistor deterioration, operation check) 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, replacement of bottom cover rubber foot defects, operation check) Accessories: copy of manual, power cable, connection cable Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg

405UK

Ask 25-46705-12407-00
405
Manufacture:QUAD
Original price: JPY 198,000
Price: JPY 90,727
UK 1975 made
Arrival: 2025-07-05 19:47:54
description
The disposal price has been reduced. Member discounts are not applicable. 2025/7/5 sales price 128,000 yen Maintenance has been completed, such as replacement of deteriorated capacitors and transistors. 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. Exterior, paint deterioration, dullness, rust, scuffs, etc. can be seen (Kobayashi Hitoshi) Maintenance information: 2025.7.5 maintenance completed (block C, VOL, rubber feet, power stage Tr, C and R replacement in the board. Input cable creation (DIN4P-RCA female) operation check) Accessories: instruction manual, power cable, connection cable Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
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