The disposal price has been reduced. Member discounts are not applicable. 2025/11/25 sales price 150,000 yen 2025/2 maintenance completed! WEST RIVER power amplifier. The input sensitivity is low, but it plays vocals and strings comfortably in a pretty nice mid-high range with a luster like a vacuum tube amplifier. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2025.2.19 maintenance completed (power switch replacement (S-6B → replacement S-6A) volume and knob reposition, missing screw addition bias and output sound check)
Accessories: power cable
Main specifications: 50W+50W high negative feedback amplifier W400×H215×D270 mm 12.8 kg
Maintenance has been completed, including the replacement of 24 capacitors that were worn out in 2014! An early JBL transistor amplifier in the 1960s. Since it is assumed that it will be built into a speaker enclosure, this model originally has no exterior parts. A glossy sound close to that of a vacuum tube using a germanium transistor. The texture is also fine, silky, and doesn't make you feel rough. It works great with old JBL speakers such as Lancer and Harkness. Dullness and scarring (Sasaki Shota)
Maintenance information: 2025.11.30 Maintained (check, Ach noise. Level fluctuation → first stage drive stage TR noise → replacement, input c, r board pattern dirt, contact instability → cleaning, other c, etc. replaced) 2015.6.25 maintained (heat dissipation silicon sheet replacement. Various inspections and adjustments. Check input/output waveforms. (Check the sound output)
2014.3.12 Maintained (VR contact cleaning, RCA terminal replacement, capacitor installation, baking creation, 24 electrolytic capacitors replaced, offset/idle current inspection, sound output test OK)
Main specifications: 40W+40W with attenuator approx. W385 x H115 x D192 mm approx. 7.0 kg
Comes with original box Mackin's super-dreadnought stereo power amplifier. The strong power of 600W+600W, the sound emitted from its imposing appearance is such that you can feel the pressure. It is a power amplifier compatible with everything from JBL of yesteryear to modern high-end speakers. The exterior is generally good (Oikawa Tetsuji)
Maintenance information: 2025.11.29 Operation confirmed
Accessories: instruction manual, power cable, original box
Main specifications: rated output 600W+600W (2Ω, 4Ω, 8Ω) W445 × H310 × D537 mm 69.8 kg
Currently sold. It is a model based on the SM6100SA that enhances the degree of perfection of parts and technology. It features smooth and delicate sound quality with excellent medium to high frequency SNR. The speaker terminals are full-scale specifications using those manufactured by WBT. It can also be used as a surround power amplifier by connecting multiple units. There is a scuff on the front panel (Murakoshi Yoichi)
Maintenance information: 2025.11.28 sound output confirmed
Accessories: copy of instruction manual, power cord, original box
Main specifications: 50W+50W (8Ω) WBT SP terminal W440 × H124 × D320 mm 7.5 kg
Maintenance has been completed, including the replacement of 12 deteriorated 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 feeling of use such as small scratches and dullness on the front and top plate. Serial 202600 (Takasaki Atsushi)
Maintenance Information: 2025.11.27 Maintained (Electrolytic Capacitors, Tantalum Capacitors, Semi-fixed Resistors replaced. Disassemble and clean the changeover switch. (Relay terminal, panel, rear terminal, housing cleaning, readjustment of various parts, aging test)
Accessories: instruction manual (copy)
Main specifications: 80W+80W (B grade) 18W+18W (A grade) DC amplifier configuration W480 x H80 x D380 mm 8.6 kg
The disposal price has been reduced! (Member discounts are not applicable) 2025/8/29 sales price 118,000 yen QUAD is a power amplifier that combines a wide range and high SNR feel with traditional, high-texture sound. Equipped with QUAD LINK, system control is also possible. Extremely practical quality can be obtained from its compact size. There are dirt scratches and threads on the exterior. Serial 99SG0109 (Fujisawa Yukishi)
Maintenance information: 2025.8.29 operation confirmed
Accessories: power cord
Main specifications: input RCA/QUAD-LINK: 1 system each input impedance 33k ohm input sensitivity 775mV (RCA input) output 1 system (banana plug can be used) maximum output: 90W/8ohm, 120W/4Ω S/N ratio 110dB frequency characteristics 3Hz to 50kHz W321 × H70 × D310 mm mass 6.25 kg
Maintenance has been completed, including 32 capacitors and 20 resistors replaced! An attractive A-class power amplifier with a powerful, thick sound. The sense of energy that makes even large speakers sound is a product close to the mid to low range, which is in contrast to modern models. It's unique to the heyday of audio with thickness, scale, and room. The exterior has scratches, dullness, scuffs, etc. appropriate for the model year (Mizusaki Ryo)
Maintenance information: 2025.11.22 Maintained (resistor, electrolysis, film capacitor (fluctuation of ± 20% or more), semi-fixed resistor replacement. Disassemble and clean the switch and volume. (The panel and housing were cleaned, each part was readjusted, and aging tested)
Accessories: instruction manual
Main Specifications: Real Bias Circuit Class A Operation 250W+250W (8Ω) 300W+300W (6Ω) Dimensions W488 x H199 x D480 mm Weight 30 kg
Maintenance has been completed, such as replacing 5 deteriorated transistors, capacitors, and varistor diodes. An attractive power amplifier with natural sound quality with few Yamaha habits. It also has driving power, and is recommended as a separate introductory aircraft. It also works great with Yamaha speakers. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.11.20 Maintained (replacement of 5 deteriorated transistors, capacitors, and varistor diodes in the power supply circuit and in the protection circuit. Corrected soldering in the left and right main amplifier circuits. Switch type disassembly contact polishing)
Accessories: none
Main specifications: 70W+70W, 140W at BTL, DC amplifier configuration W200 × H193 × D407 mm 16.2 kg
The price has been reduced. 2025/11/14 sales price 39,800 yen It's cheap because there are a lot of scratches. A stereo power amplifier with improved sound quality by incorporating Marantz's unique circuit Absolute SA Technology, which reviews power supply, parts, and wiring based on the SM-17SA. The smooth and thick sound is characteristic. Although it has a slim housing, it is also attractive for its outstanding driving power. There are insulator marks on the top plate, such as dullness and small scratches on the exterior. Serial A1010529000 (Eternity Mirai)
Maintenance information: 2025.11.14 Operation confirmed
Accessories: power cable
Main specifications: rated output 100W+100W (4Ω) 80W+80W (6Ω) 60W+60W (8Ω) when connected to BTL 8Ω 200W W458 × H110 × D407 mm 15.5 kg
The disposal price has been reduced! (Member price not applicable) 2025/11/16 sales price 348,000 yen Jeff Roland's small monaural amplifier. A high performance mono power amplifier requiring a strong power supply from ICE POWER. The high degree of perfection that achieves both thickness and texture even though it is small, and the glossy tone unique to JEFF is still attractive enough. The exterior is dull and has small scratches. Serial MB0266/MB0267 (Yonejima Satoshi)
Maintenance information: 2025.11.16 Operation confirmed
Accessories: instruction manual, power cord, original box
Main specifications: 250W+250W (8Ω) W216×H65×D290 mm 6.2 kg
*Currently sold. It's an inexpensive yet powerful amplifier. The model, which combines stable operation and abundant power, has a good sense of dynamism in the sound, and it feels like it comes to the fore. The input is equipped with an unbalanced RCA pin and a balanced TRS phone. There are multiple abrasions on the top plate (Sasaki Shota)
Maintenance information: 2025.11.20 Operation confirmed
Accessories: power cable
Main specifications: 45W+45W (8Ω) bridge output 150W (8Ω) W480 × H99 × D260 mm 6.8 kg
It has been maintained by replacing deteriorated parts such as capacitors and volume! SONY's early solid state power amplifier is rare now. A sharp, refreshing sound. The sound image is also clear, and I feel the atmosphere of this era in the sound of attacks playing the piano (Murakoshi Yoichi)
Maintenance information: 2025.11.19 maintained (VR left and right replacement, input RCA jack, power supply electrolytic capacitor 47u/100v x 8, 470/25v x 1 replacement, speaker SW power limiter switch, FUNCTION switch, power supply mute SW disassembly contact polishing cleaning grease application, DC idling DC balance adjustment)
Accessories: none
Main specifications: Rated output: 100W+100W 100W can be switched between 100W, 50W, and 25W with an output limiter switch W400 x H149 x D323 mm 12.2 kg
A Jeff Roland stereo power amplifier where you can enjoy the hot sound of the night before Ice Power. Genuine Oba Shoji product. It is a gem that comes out of a large toroidal transformer+power capacitor, and boasts hidden abilities due to its strength when sitting on the back while being small, and has a sense of silence and good sound. As for the exterior, there is a scratch on the top plate. Serial L0309 (Yonejima Satoshi)
Maintenance information: 2025.11.19 Operation confirmed
Accessories: instruction manual, power cord
Main specifications: 150W+150W (8Ω) 275W x 275W (4Ω) with RCA and XLR input switching W444 x H143 x D337 mm weight 24.5 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/8/24 sales price 89,800 yen. Maintained! A power amplifier at the core of LUXMAN's ambitious laboratory reference series in the 70s. It is a model that made clear and powerful sound possible with a DC amplifier configuration that was advanced at the time. The exterior and one screw cap on the top plate are missing, and there is a slight feeling of use (Kobayashi Hitoshi)
Maintenance information: 2025.8.24 Maintained (replacement of 6 capacitors in the power supply circuit, power fuse, meter lamp, and power lamp. (Long time sound check)
Accessories: copy of the manual
Main specifications: continuous effective output 100W+100W (8Ω) damping factor 80 or more (8Ω) W442 × H146 × D400 mm 19.0 kg
Disposal price has been reduced (member prices are not applicable) 2025/11/13 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 is full of age wear, paint peeling, and small scratches.
Serial 14497 (Tomoho Asaine)
Maintenance information: 2025.11.13 Maintained (The fuse has been replaced. There were no confirmed issues with internal transistor, capacitor, resistor values, etc. The input/output waveform was checked, left and right balance checked, load tests, and comprehensive operation tests were performed to confirm normal operation. Load test (1kHz sine wave, at 8Ω load: 100W+100W), sound output test. Running test 10H)
Accessories: power cable
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
A power amplifier that enables overwhelming spatial expression with a second-generation ultra-high speed switching power supply. The smooth, cored sound has a texture unique to high-end machines. They also have excellent driving power and the ability to easily drive high-class speakers. The exterior is dull all over, and there are small scratches on the top plate and front. Serial K0129/H0076 (Yonejima Satoshi)
Maintenance information: Maintained at Taiyo International on 2020.2.12 (replaced with an XLR connector pair)
Accessories: copy of instruction manual, power cord, connection cord
Main specifications: 150W+150W (8Ω) input/unbalance (RCA) 1 system/balanced (XLR) 1 system SP terminal/1 system main unit W445 x H97 x D335 mm power supply unit W445 x H97 x D319 mm body 13.5 kg power supply 13.7 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/11/5 sales price 278,000 yen Goldmund's small power amplifier will be introduced for the first time in a long time. The amplifier circuit is equipped with an optimized version of the company's Teros circuit for Metis. A robust all-aluminum chassis is used to suppress the effects of internal and external vibrations. The excellent sound that is different from the Mimesis series due to the careful power supply unit configuration is attractive. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2025.11.5 operation confirmed
Accessories: instruction manual, power cord
Main specifications: rated output 100W RMS at 8Ω analog input RCA x 1 frequency characteristics +/- 0.05dB, 10Hz-20kHz speaker terminal SPADE/BANANA compatible speaker terminal W300 x H60 x D285 mm 7.5 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/11/11 sales price 178,000 yen Maintained. Accuphase70's vintage stereo power amplifier with A/B switchable The power supply unit uses 2 completely independent left and right transformers for clean sound that suppresses mutual interference. The mild, thick tone is the tone leading to the subsequent reference power amplifier P-500. Serial B2X519 (Mizushima Itsuro)
Maintenance information: 2025.11.11 Maintenance completed (medium output transistor, semi-fixed VR, electrolytic capacitor, lamp, output relay due to defects and deterioration, ATT dismantling and cleaning, screw expansion and tightening, ATT shaft bending correction, card edge contact cleaning, bias and offset adjustment, output sound check, interior and exterior cleaning*Switch A class/AB class operation changeover switches in the power off state please. (*The -10dB indicator on the right meter is slightly discolored and cannot be corrected)
Accessories: copy of instruction manual
Main specifications: A/B grade switchable type A grade 50W+50W B grade 200W+200W dimensions W445 x H160 x D455 mm weight 31.2 kg
The price has been drastically reduced. 2025/10/9 sales price 398,000 yen Transistors and capacitors have been replaced, etc. Maintenance has been completed! The flagship model of the Macintosh power amplifier at the time. 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. There is strong dirt on the power cable and there is a feeling of use (Murakoshi Yoichi)
Maintenance information: 2025.10.8 Maintained (meter board connector, board contact cleaning, connector replacement. Meter display lamp replacement, power stage Tr x 2, driver board Tr, C replacement, MODE switch SW dismantling and cleaning, GAIN VOL exchange. Operation check)
Accessories: instruction manual (copy), power cable
Main specifications: 500W+500W (1000W when mono) equipped with power guard circuit W483 x D465 x H263 mm 60.3 kg
Maintained! A true pure Class A amplifier that supplies constant bias current up to maximum output. It has 100W+100W output that brings furious momentum. The energetic and supple sound, supported by a powerful power source, makes me feel the Luxman of yesteryear. There is a small scratch on the front panel lid (Daiki Goto)
Maintenance information: 2025.11.13 Maintained (all disassembled and cleaned, fans disassembled and cleaned. Disassembly contact polishing for switches such as attenuators. All internal circuit boards have been soldered and corrected. Parts were replaced at the previous manufacturer. When this unit is set to full volume without input, it emits a slight buzzing noise from the speaker due to induction noise. If connected to an input terminal such as a preamplifier, no noise is generated. BALANCE is prioritized and switched between BALANCE and COAXAL, but this is a specification.)
Accessories: copy of the manual, original box
Main specifications: continuous effective output 100W+100W (8Ω, grade A) frequency characteristics 5Hz to 300,000 Hz SNR 120dB damping factor 500 power consumption 280W x 2 size W438 x H220 x D474 mm weight 52 kg
Maintained! A true pure Class A amplifier that supplies constant bias current up to maximum output. It has 100W+100W output that brings furious momentum. The energetic and supple sound supported by a powerful power source makes me feel Luxman of yesteryear (Daiki Goto)
Maintenance information: 2025.11.13 Maintained (power transistor replacement. All internal boards have been soldered and corrected. Disassembly contact polishing for switches such as attenuators. Disassemble and clean fans, etc. When this unit is set to full volume without input, it emits a slight buzzing noise from the speaker due to induction noise. If connected to an input terminal such as a preamplifier, no noise is generated. BALANCE is prioritized and switched between BALANCE and COAXAL, but this is a specification.)
Accessories: copy of the manual, original box
Main specifications: continuous effective output 100W+100W (8Ω, grade A) frequency characteristics 5Hz to 300,000 Hz SNR 120dB damping factor 500 power consumption 280W x 2 size W438 x H220 x D474 mm weight 52 kg
※Since it is cheap, it will be handed over as is. A compact power amplifier that is small in size and takes up almost no space. It's a car where you can easily enjoy music even in places where there's no space. (FUJISAWA KOSHI)
Maintenance information: 2025.11.13 Operation confirmed
Accessories: instruction manual, connection cord, AC adapter, original box
Main specifications: 5W+5W (8Ω) 8Ω to 16Ω W86 × H26 × D67 mm weight 200g
The disposal price has been reduced. Member prices are not applicable. 2025/10/29 sales price 398,000 yen An Accuphase power amplifier manufactured with particular attention to parts used, such as elements. The sharp, stretchy mid-high range with firm low frequencies is attractive. There is overall dullness, and there are scratches and paint peeling on the back side of the top plate (Oikawa Tetsuji)
Maintenance information: 2025.10.29 Operation confirmed
Accessories: Power cable (external product), copy of instruction manual
Main specifications: 650W+650W (1Ω, limited to music signals) 400W+400W (2Ω) 200W+200W (4Ω) 100W+100W (8Ω) bridge connection possible 6 para push output stages use Teflon material on the board 2 input systems (RCA/XLR) W475 x H223 x D491 mm 38 kg
Maintenance has been completed, including the replacement of 13 deteriorated transistors and 13 deteriorated capacitors! An eye-catching diamond-tone power amplifier with a rugged design. The extrusion of the mid-range is clear and the sound is slightly firm, but the sound is good, so it seems to go well with jazz and rock. There are scratches, dullness, and a feeling of use (Sasaki Shota)
Maintenance information: 2025.11.8 Maintained (5 deteriorated transistors in the protection circuit, 5 capacitors. Replace 8 deteriorated transistors and 8 capacitors on the left and right pre-drive circuits. Input volume disassembly contact polishing. Electric circuit DC adjustment, idling current adjustment. (Check the sound output for a long time with the preamp as a set)
Accessories: manual
Main specifications: 2 mono construction system 100W+100W (8Ω) W425×H170×D285mm 16.5 kg
It has been replaced with a power inlet (3P type). This is a luxurious power amplifier that can be enjoyed by switching between sharp Class AB output and Class A output with thick, glossy sound quality, while being reasonably priced in AccuPhase. It is a 70's accuphase sound that is thick and has a glittering mid-high range. There are many line scratches on the top plate*Please switch between A class and AB class when the power is off (Oikawa Tetsuji)
Maintenance information: 2016.8.9 maintained (AC3P plug change, SP terminal change, output relay replacement, LED replacement, electrolytic capacitor replacement, VR replacement for adjustment, screw replacement, solder repair, ATT disassembly and cleaning, card edge connector cleaning, bias and offset check, output check A and AB class, interior and exterior cleaning)
Accessories: power cable, copy of instruction manual
Main specifications: 130W+130W/B class 30W+30W/A class A/AB class switchable DC amplifier configuration using MOS/FET, CI core transformer adopted, W445 x H160 x D390 mm, 19.7 kg
A power amplifier with a 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. The exterior, dullness, partial loss of the front logo, scratches, etc. can be seen (Kobayashi Hitoshi)
Maintenance information: 2025.11.3 operation confirmed
Accessories: power cable, short pin
Main specifications: 50W+50W (8Ω) 100W+100W (4Ω) 200W (8Ω MONO) input sensitivity/impedance 1V/50kΩ (balanced/unbalanced) W483 × H175 × D370 mm 19 kg
The price has been drastically reduced. 2025/11/2 sales price 428,000 yen 4th generation 2004-2006 version of the famous MC275. Stainless-steel chassis. The first model equipped with a power switch. The traditional look is heavy and full of vintage feel, and the strength of yesteryear is alive and well, and the wider range compared to the original has been added, making it compatible with recent recording sources. Equipped with a power switch, it is easy to use. There are no major scratches on the exterior, but the lettering has disappeared, and there is overall dullness (Oikawa Tetsuji)
Maintenance information: 2025.11.2 operation confirmed
Accessories: power cable
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
The price has been drastically reduced! 2025/10/8 sales price 79,800 yen Maintenance was completed in 2023/10. 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. The exterior has dullness and small scratches over time. (Satoshi Yonejima)
Maintenance information: 2023.10.3 Maintained (with transmission clutter, sponge deterioration → anti-vibration rubber installation. Replace the C6 in the board. Power stage TR check OK. Operation check)
Accessories: copy of instruction manual, power cable
Main specifications: output 140W+140W (8Ω) W321×H140×D238mm 12kg
A popular classic cello power amplifier. The subtlety within the overwhelming thickness of the sound. You can only enjoy it with DUET. It shows movement as if the sound is alive. I definitely recommend this one for those interested in high-end audio. There is a small scratch on the side panel, and the ON/OFF printing on the power switch has disappeared (Kojima Yosuke)
Maintenance information: 2025.11.6 operation confirmed
Accessories: connection cable, power cable
Main specifications: 350W+350W W485×H315×D596mm 44.5 kg
Maintained! It is a vacuum tube amplifier that is both transparent and smooth. The sense of volume in the low range and softness in the mid to high range typical of the EAR are attractive, so please enjoy a luxurious time. There is a thread on the front. (GOTO Daiki)
Maintenance information: 2025.11.6 maintained (there is a gap in the function SW and the pilot lamp is out. There is a screw falling inside. Power supply pilot lamp function switch volume failure and deterioration due to poor volume and deterioration, each replacement, drop screw installation, solder correction, vacuum tube pin cleaning, and cleaning because there is a lot of dust, disassemble and clean. Bias check Each input and output sound was checked.)
Accessories: copy of manual, power cable
Main specifications: horn type ferrite magnet, playback frequency band: 2500 to 15,000 Hz, impedance: 8 ohms, output, sound pressure level: 110 dB, diameter: 119 x depth: 94 mm, weight: 2.4 kg