※For business use, it will be handed over as is. Although it has a compact body, it is a professional power amplifier that can output 60 W/channel with an 8 ohm load. The driving power that easily drives small to medium class speakers is attractive. It can also be used as a 200W/8Ω mono amplifier with a bridge connection. The exterior is dull. Serial 2B-213896 (Yonejima Satoshi)
Maintenance information: 2024.5.18 Operation confirmed
Accessories: instruction manual, power cord
Main specifications: 60W+60W W482.5 x H44.4 x D254 mm 8 kg
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 62226 (Yonejima Satoshi)
Maintenance Information: 2024.3.25 Maintained (INPUT DIN 4P replacement, internal Tr, C, R all checks. DIN4P-RCA female cable created. Operation check, pattern solder processing)
Accessories: power cable, connection cable
Main specifications: 45W+45W W120×H159×D324mm 8.2 kg
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 is a feeling of use such as dullness. Serial 3121 (Takasaki Atsushi)
Maintenance information: 2024.3.22 maintained (INPUT DIN4P and AC connector replacement, DIN4P-RCA x 2 (1m) creation, internal check, DC cut C, coupling C replacement, RCH offset VOL exchange, constant change in constant voltage circuit)
Accessories: copy of manual, power cord, connection cord
Main specifications: 45W+45W W120×H159×D324mm 8.2 kg
The disposal price has been reduced! (Member prices are not applicable) 2024/3/22 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 41000 (Tomoho Asaine)
Maintenance Information: 2024.3.22 Maintained! (Internal check DC cut C, gain setting C, etc., exchange Tr, etc. check operation check, DIN4P-RCA female cable creation)
Accessories: power cable
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
The disposal price has been reduced. Member discounts are not applicable. 2024/3/20 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. You can see a feeling of use such as appearance, dullness, abrasions, scratches, stains, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.3.19 maintenance (DIN connector replacement, resistance in both other channels, capacitor replacement, each Tr all check)
Accessories: connection cable, 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
The disposal price has been reduced! (Member discounts are not applicable) 2024/4/27 sales price 148,000 yen Maintained! It is a model that is small yet has a calm and glossy tone. A combination with European speakers is recommended along with the company's Pre-44. A slightly more modern taste than the 405 has been added. There is a feeling of use on the exterior, such as dullness, small scratches, and peeling paint. Serial Q078428 (Hiroki Aso)
Maintenance information: 2024.4.27 maintained (internal dismantling check, power Tr driver, Tr check, replacement of each C in the board, partial soldering, defect correction, bottom rubber foot mounting operation check)
Accessories: copy of instruction manual DIN to RCA (female) conversion cable, power cable (general purpose)
Main specifications: 100W+100W W341×H115×D195mm 9.0 kg
The price has been reduced! 2024/4/19 sales price 79,800 yen ※1 unit only. Maintained! It is originally a professional mono amplifier, but there is only 1 unit. You can feel the strong power of the sound quality even with just one unit. It seems to be useful for mono and center speakers. There are scratches and paint peeling on the exterior. Serial Q001769 (Fujisawa Yukishi)
Maintenance information: 2024.4.19 Maintained (XLR speaker cable created (3 meters)). Electrolytic capacitor replacement. ATT cleaning. Solder correction. Rubber feet added. Bias offset check. Output audio check. Input ① GND ② HOT ③ GND (unbalanced) output ① not used ② is set to plus ③ minus 8 Ω load. (Also, a pop sound is made when the power is on and off, but this is a specification)
Accessories: speaker cable, power cable
Main specifications: 8 ohms W482.6 x H88 x D320 mm weight 13 kg
The price has been reduced. 2024/5/10 sales price 99,800 yen Maintained. professional monitor amplifier It has strength unique to commercial use, and the driving power in the low range is truly remarkable. However, it also has a strong sense of temperature typical of a quad, so it is an amplifier that I would like people who are shunned when the sound is too straight for commercial use to try it once. There is a feeling of use such as a scuff on the top plate. Serial Q002959 (Mizushima Itsuro)
Maintenance information: 2024.2.15 maintenance (internal Tr, C, R check, output phase correction resistor, DC IN± bypass C, gain setting C, CDS replacement within the INPUT photocoupler. INPUT VOL CLEANING Output cable XLR cannon attached)
Accessories: copy of instruction manual, power cable, speaker cable
Main specifications: 100W+100W (8Ω) W483 × H88 × D310 mm 12.5 kg
The price has been drastically reduced. 2024/3/2 sales price 99,800 yen Maintained! professional monitor amplifier It has strength unique to commercial use, and the driving power in the low range is truly remarkable. However, it also has a strong sense of temperature typical of a quad, so it is an amplifier that I would like people who are shunned when the sound is too straight for commercial use to try it once. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.3.2 maintained (internal dismantling all check, Tr, C, R check, ±B INPUT bypass C replacement, Tr, R, etc., all OK, INPUT photocoupler check, operation check)
Accessories: copy of instruction manual, power cord, dedicated SP cord (cable length 2.5 m)
Main specifications: 100W+100W (8Ω) W483 × H88 × D310 mm 12.5 kg
Maintained in 2015. The 606 is thick and unimaginable from its compact exterior. The good sound unique to QUAD allows you to enjoy not only classical music, but also jazz vocals in a mild way. The high level of musicality that makes you enjoy the music with a pleasant tone stands out. There is deterioration in exterior paint (Murakoshi Yoichi)
Maintenance information: 2015.9.12 maintenance completed (internal power transfer → malt plane deterioration → dismantling and reinstallation, exchange of both channel in-board bypass C, gain setting C, etc., TR check → OK, operation inspection check)
Accessories: power cord
Main specifications: output 140W+140W (8Ω) W321×H140×D238mm 12kg
*Currently sold. JBL/UREI professional power amplifier Dynamic sound with clear contours and momentum. The driving power that makes it easy to drive even large speakers at a high volume is attractive. It can also be used as mono power by connecting to a bridge. There are conspicuous abrasions on the exterior and top plate, and a feeling of use such as dullness and scratches can be seen (Kobayashi Hitoshi)
Maintenance information: 2024.5.19 Operation confirmed
Accessories: none
Main specifications: 150W+150W (8Ω) 300W+300W (4Ω) input 2 systems (phone/XLR) W483 x H180 x D260 mm approx. 20 kg
Accuphase's pure A class stereo flagship model. The balance between static and dynamic, and soft and stiff is packed into this car. A power MOS FET with a reputation for sound quality and reliability is used as the output element, and 10 parallel push-pull drives are used per channel. Furthermore, the powerful power supply unit achieves linear high power up to an ultra-low impedance of 1 ohm. There are scratches on the exterior. Serial D1Y563 (Fujisawa Yukishi)
Maintenance information: 2024.5.25 Operation confirmed
Accessories: instruction manual, power cable (general purpose)
Main specifications: 60 W+60 W (when 8 ohm stereo specification) 240 W (when 8 ohm mono specification/bridge connection) gain 28 dB load impedance 2 to 16 ohms (in stereo specification) 4 to 16 ohms (in mono specification/bridge connection) W465 x H238 x D515 mm weight 43 kg
Accuphase's pure A class stereo flagship model. The balance between static and dynamic, and soft and stiff is packed into this car. A power MOS FET with a reputation for sound quality and reliability is used as the output element, and 10 parallel push-pull drives are used per channel. Furthermore, the powerful power supply unit achieves linear high power up to an ultra-low impedance of 1 ohm. The exterior has some impact scratches on the corner. Serial D1Y562 (Fujisawa Yukishi)
Maintenance information: 2024.5.25 Operation confirmed
Accessories: instruction manual, power cable (general purpose)
Main specifications: 60 W+60 W (when 8 ohm stereo specification) 240 W (when 8 ohm mono specification/bridge connection) gain 28 dB load impedance 2 to 16 ohms (in stereo specification) 4 to 16 ohms (in mono specification/bridge connection) W465 x H238 x D515 mm weight 43 kg
The price has been reduced. 2024/5/19 sales price 298,000 yen The successor to the company's Aleph 0s. Pure Class A amplification operation. The power supply unit has been changed and the non-feedback circuit follows the previous model. Similar to the 0s, the richness and elasticity of the Nelson Pastune has the impression that the number of sounds has increased while retaining it, making it compatible with various genres. You can see a feeling of use such as appearance, dullness, small scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.5.19 sound output confirmed
Accessories: instruction manual, power cord, original box
Main specifications: execution output 60W+60W (8Ω) input impedance 25kΩ (balance) 10kΩ (unbalanced) W304 × H267 × D305 mm 20.4 kg
The disposal price has been reduced. Member discounts are not applicable. 2023/6/12 sales price 49,800 yen ※1 mono amplifier only. The display lamp visible through the lattice is a transistor mono power amplifier with an indescribable design. As for the sound quality, it is a powerful sound with a sense of overhang while making you feel thick, and the low frequencies are not sluggish, making you listen to a pleasant sound. The exterior is dull all over, scratches on the top plate, etc., and there is a feeling of use (Kobayashi Hitoshi)
Maintenance information: 2023.6.13 Maintained (output relay contact correction input volume disassembly contact correction protection circuit transistor replacement input terminal polish)
Accessories: none
Main specifications: effective output 150 W, input level adjustment, SNR 110 dB, dimensions W436 x H95 x D328 mm, weight 11.5 kg/1 unit
The disposal price has been reduced (member prices are not applicable). 2023/11/26 Sales price 128,000 yen Maintained in 2022/6! An eye-catching power amplifier with its black and large power meter typical of Sansui. It entertains me with its power, which can be felt from its appearance, and its supple, stretchy sound quality. The exterior has dullness, scratches, rust, etc. over time (Oikawa Tetsuji)
Maintenance information: 2022.6.23 Maintained (both channel volumes replaced. SP relay bad contact replacement. Replace protectors, deteriorated transistors, resistors, and diodes in meter boards. Replace deteriorated transistors and resistors in the power supply board. Replace deteriorated transistors and capacitors in the drive board. OUTPUT selector switch cleaning. (General adjustment)
Accessories: none
Main specifications: left and right independent 2 power supply diamond differential circuit effective output 110W+110W (8Ω) load impedance 4 to 16 ohms W482 x H187 x D450 mm 20.3 kg
The price has been drastically reduced! 2024/1/18 sales price 49,800 yen Maintained! An American-made amplifier from the 1970s that can hardly be seen today. Circuits for self-preservation, such as security, correction, and protection, have been cut off, and I think that handsome atmosphere is well reflected in the sound. It has the same feeling of use as the model year (Daiki Goto)
Maintenance information: 2024.1.18 Maintained (check capacitors, resistors, transistors, etc. as is OK. bias check)
Accessories: none
Main specifications: size (actual measurement) W406 x H155 x D327 mm weight (actual measurement) 12.2 kg
The disposal price has been reduced! (Member discounts are not applicable) 2024/1/18 sales price 49,800 yen Maintained! An American-made amplifier from the 1970s that can hardly be seen today. Circuits for self-preservation, such as security, correction, and protection, have been cut off, and I think that handsome atmosphere is well reflected in the sound. It has the same feeling of use as the model year (Daiki Goto)
Maintenance information: 2024.1.18 Maintained (LED installation (original not available) poor power stage transistor deterioration, defective transistor in the board → replacement. Bias adjustment, operation check.)
Accessories: none
Main specifications: size (actual measurement) W406 x H155 x D327 mm weight (actual measurement) 12.2 kg
Maintained! A power amplifier using the AB/LR independent power supply system, which is a further development of the A class B class 2 independent power supply system. Contrary to its solid appearance, it has a beautiful sound with a sense of transparency. The sound quality is moderately tight and firm, and it naturally handles crisp and energetic intonation expressions. The exterior has small scratches and dullness appropriate for the model year (Oikawa Tetsuji)
Maintenance information: 2024.5.12 Maintained (replacement of defective output relay contacts. (Replace deteriorated capacitors in power supply circuits and other circuits)
Accessories: none
Main specifications: 100W+100W (8Ω) compatible speakers 4Ω to 16Ω SNR 110dB W420 x H166.5 x D300 mm 19.2 kg
A masterpiece transistor type power amplifier from McKinn's heyday. The powerful, rich, and thick tone is a popular gem among jazz fans of yesteryear. The sound combined with speakers such as the 4343 is exceptional. The exterior is dull and scratched from use over time. Serial AX6653 (Tomonori Asaine)
Maintenance information: 2024.5.25 maintained (each SW VOL cleaning, lamp replacement, relay contact polishing power meter SW crack → internal reinforcement driver board capacitor replacement, power stage transistor check resistor replacement, additional meter board resistor installation capacitor replacement)
Accessories: copy of instruction manual
Main specifications: 200W+200W (1/2/4/8 ohms), equipped with an attenuator on the front, input sensitivity 0.75/2.5V, W411 x H181 x D368 mm, 38.6 kg
The flagship model of the Macintosh power amplifier with a silver panel. It is characterized by its rich sound. The extrusion is strong and goes great with JBL large monitor speakers. The dynamism in the mid to low range, which is difficult to obtain with current Mackin power amplifiers, is attractive. There are scratches, dullness, and discoloration in places (Kojima Yosuke)
Maintenance information: Maintained on 2020.8.26 (2 input volumes, 4 semi-fixed volumes, 2 RCA plugs, 12 lamps, 8 electrolytic capacitors, replacement input mode switch disassembly cleaning, card edge cleaning, soldering, bias and offset check, output sound check)
(*The interior and exterior have been cleaned.)
Accessories: power cable
Main specifications: 500W+500W (1000W when mono) equipped with power guard circuit W483 x D465 x H263 mm 60.3 kg
The disposal price has been reduced. Member prices are not applicable. 2024/3/7 sales price 128,000 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 leg is out of stock. The exterior has dullness and small scratches. Serial 4180 (Yonejima Satoshi)
Maintenance information: 2024.3.7 Maintained (single CH power stage transistor replacement. Screwdriver transistor resistor replacement. Drive Tr Capacitor Replacement Contact polishing, aging test)
Accessories: No accessories
Main specifications: 125W+125W (8Ω) W445 × H170 × D265 mm 14.8 kg
The disposal price has been reduced. Member prices are not applicable. 2024/5/6 sales price 998,000 yen*The front panel is 20.6L, but it is an upgraded product starting at 20. Maintained! Genuine Harman product. The excellent separation unique to mono and the excellent sense of shading of the sound give off a unique difference, and even large aperture woofers drive well. Also, the slightly sweet, and comfortable sound similar to ML-2L is attractive. It still makes music fans groan. There are scratches and small scratches on the exterior. Serial 666/665 (Sasaki Shota)
Maintenance information: 2024.4.15 Maintained (1 deteriorated transistor has been replaced. Other inspections and adjustments have been made) 2023.7.20 maintained (connector contact between the heat sink board and main board has been corrected. Tr, capacitor and resistor exchange. Part of the board solder is re-soldered. Attach the Fisher plug to the SP cable. (Other inspections and adjustments)
Accessories: copy of instruction manual, power cable, Fisher to SP cable, Remo pin x 2, balance short pin
Main specifications: mono power amplifier effective output 100W (8Ω) input/unbalance (RCA) 1 system, balance (XLR) 1 system, 1 SP terminal system W483 ✕ H210 ✕ D560 mm weight 33 kg/unit
The price has been reduced! 2024/5/25 sales price 250,000 yen power amplifier with dual monaural configuration. This model has a small output yet has driving power, and since the signal path has been shortened, it makes you feel more powerful than the specs. You can fully enjoy the sound, intensity, and thickness unique to Levinson at an affordable price. There is a feeling of use on the exterior, such as dullness and small scratches. Serial 1520 (Hiroki Aso)
Maintenance information: 2024.5.20 sound output confirmed
Accessories: copy of instruction manual Remo pin power cable (general purpose product)
Main specifications: 50W+50W (8Ω) 100W+100W (4Ω) 200W (8Ω MONO) input sensitivity/impedance 1V/50kΩ (balanced/unbalanced) W483 × H175 × D370 mm 19 kg
※Since it is a commercial device, there is no problem with the as-is operation, but since there is no guarantee, it is inexpensive. The sound quality is clean, fresh, and light, and the sound is firm and crisp. The sound development is such that the image that comes to mind when using the word YAMAHA for commercial use fits perfectly. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.5.21 Operation confirmed
Accessories: copy of instruction manual, power cord
Main specifications: stereo output 105W+105W (4Ω) 100W+100W (8Ω) bridge output 210W (8Ω) frequency characteristics 20Hz-50kHz damping factor 200 input terminal XLR, phone, output terminal 5WAY binding post power consumption 150W W480 x H880 x D456mm 12 kg
The disposal price has been reduced! (Member discounts are not applicable) 2023/5/9 sales price 198,000 yen Maintained! This power amplifier was released around the same time as the SG620. It combines 100W+100W driving power with good sharpness. It reproduces thick sounds unique to JBL from a simple design with only a power switch on a black body. It goes well with 70' SJBL speakers and drives exhilarating. The exterior has front scratches, bends on the power switch, scratches, and repair marks on the top plate. Serial 10623 (Yamato Yuki)
Maintenance information: 2024.3.2 Maintained (timer relay installed (speaker will be turned on 5 seconds after power is turned on. (Please turn off the VOL when the power is on). Power SW bending correction (deformation of the knob itself is not compatible). Power stage Tr check. (Replacement of Tr in the board, level VOL, fuse holder, and C in the power supply board)
Accessories: power cable
Main specifications: T-type circuit adopted 100W+100W W432 ✕ H132 ✕ D355mm 19kg
※There are no operation confirmation issues, but since it is for business use, it will be handed over as is without warranty. It is an attractive amplifier with a maximum output of 100W during 4-channel operation, and the strength unique to commercial use. There is a feeling of use such as scratches and dullness on the exterior as a whole (Ryo Mizusaki)
Maintenance information: 2024.2.3 sound output confirmed
Accessories: none
Main specifications: 80 W x 4 (8 Ω continuous output) 100 W x 4 (4 Ω continuous output) 200 W (BTL 8 Ω continuous output) W480 x H88 x D417 mm weight 12.5 kg
Self-made 4ch power amplifier using 4 Flying Mall digital power amplifiers DAD-M1. The construction is solid, and the sound is high resolution, just like a flying mall. Recommended for those who want to save space and use it for multiple purposes. The exterior has a feeling of use such as dullness and small scratches (Hiroki Aso)
Maintenance information: 2024.5.20 sound output confirmed
Accessories: power cable
Main specifications: DAD-M1 rated output 160W/4Ω 100W/8Ω frequency characteristics DC to 25kHz/4Ω DC to 50kHz/8Ω S/N ratio 120dB overall size W270 × H162 × D290 mm weight 6 kg (actual measurement)
Self-made 4ch power amplifier using 4 Flying Mall digital power amplifiers DAD-M1. The construction is solid, and the sound is high resolution, just like a flying mall. Recommended for those who want to save space and use it for multiple purposes. The exterior has a feeling of use such as dullness and small scratches (Hiroki Aso)
Maintenance information: 2024.5.20 sound output confirmed
Accessories: power cable
Main specifications: DAD-M1 rated output 160W/4Ω 100W/8Ω frequency characteristics DC to 25kHz/4Ω DC to 50kHz/8Ω S/N ratio 120dB overall size W270 × H162 × D290 mm weight 6 kg (actual measurement)