* Since the meter is defective on one side, it is inexpensive (there is a meter difference between the left and right, and the starting position is not at 0). Maintenance was completed in 2025/12. The final model of Ampzilla. A representative American sound with strong, tight low frequencies! The dry, clean-sounding character is the perfect match for vintage speakers of yesteryear. This is a masterpiece machine that briskly drives famous speakers from JBL and Altec. The exterior is dull and dirty. The fuse holder has been replaced with a black one. Serial 104730 (Tamura Eiji)
Maintenance Information: 2025.12.3 Maintained (fuse holder replaced. Meter switch disassembly contact cleaning. (*The internal movement of the meter was poor, and the meter was disassembled, but repairs were not possible)
2022.5.12 Maintained (fuse holder lock claw adjustment. Replace the fuse. 0 point meter adjustment Offset voltage, idling current adjustment. (Other internal inspection voice check)
Accessories: No accessories
Main specifications: 200W+200W (8Ω) perfect balance configuration W445 × H178 × D229 mm 22.7 kg
The disposal price has been reduced! Member prices are not applicable. 2026/5/2 sales price 698,000 yen Maintained! A mono power amplifier with a fully balanced design worthy of being called the culmination of TRIGON. The two completely independent amplifiers inside control the movement of the speaker unit's diaphragm with independent power amplifiers for an astonishing response.*Since BTL amplifiers also emit a signal on the negative side of the speaker terminal, please do not share the negative side. The exterior has dullness and small scratches. Serial 2129, 2130 (Fujisawa Yukishi)
Maintenance information: 2026.5.2 Maintained (push switch replacement (both units) created due to insulator damage. Fixed because the ribbon cable clamp came off. Loosen the screws and tighten them. Bias and offset checks. I checked the output sound. *This model has a BTL configuration. There is also an audio output on the negative side of the speaker terminal. (Please do not ground or share the negative terminal)
Accessories: power cord
Main specifications: maximum output 650 W (4 Ω), 400 W (8 Ω) input RCA x 1, XLR x 1 output XLR (line output for bi-amp) input impedance 47 kΩ playback frequency band 0.5 Hz to 250 kHz W299 x H170 x D464 mm weight 23.9 kg
The price has been drastically reduced! 2026/5/7 sales price 398,000 yen ※Jumper pins are being arranged. Maintained! Genuine Harman Levinson's masterpiece power amplifier. The overall response of the sound is better than the previous No. 27L, and it has been brushed up to a careful sound that makes you feel more intelligent. The way it's easy to drive a large woofer makes me feel even exhilarating. It's a powerful machine that can't help but be popular even now. As for the exterior, there are small scratches and threads on the top plate and front. Serial 3175 (Yonejima Satoshi)
Maintenance information: 2026.5.7 Maintained (34 capacitors and 8 resistors replaced. There was some deterioration in the solder, and it was fixed. DC voltage/DC offset voltage/idling current/other adjustments)
Accessories: Remo pin power cable
Main specifications: 100W+100W (8Ω) 200W (4Ω) dual mono configuration toroidal power transformer dimensions W483 x H175 x D450 mm weight 32 kg
The price has been drastically reduced. 2026/4/30 sales price 278,000 yen*There are many dents in the shape of water drops on the front panel. Maintained! Luxman mid-range stereo power amplifier. Compared to the predecessor M-7 series, driving power was dramatically improved by adopting second-generation ODNF circuits and custom-made parts. It adds a sense of transparency while keeping the warm softness called lux stone intact. It is a power amplifier that combines 200W of power and smoothness. Serial M50610282A (Hiura Katsuji)
Maintenance information: 2026.4.29 Maintained (AC inlet output relays replaced. (Disassemble, polish, and clean rotary switches and apply protective agents, solder correction, bias and offset checks, output sound checks, interior and exterior cleaning)
Accessories: power cable, instruction manual (copy)
Main specifications: 200W+200W (8Ω) input 2 systems (balanced/unbalanced switching type) W467 x H212 x D440 mm 29.0 kg
The disposal price has been reduced. Member discounts are not applicable. 2026/4/25 sales price 398,000 yen Maintenance completed. A heavyweight power amplifier with a threshold. It has solid momentum and strength, and even large speakers drive well. This is one car where you can enjoy the thickness, richness, and airiness unique to this age. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2026.3.7 Maintained (power supply unit smoothing capacitor replacement. Control resistor replacement. Semi-fixed VR exchange. Acrylic board adhesion correction. Bias and offset checks. Output audio check. (*Since there is no mute mechanism, there is a slight pop sound when the power is turned on, but this is a specification)
Accessories: none
Main specifications: effective output 200W+200W (20 to 20,000 Hz, 8 ohm, both channel drive) harmonic distortion ratio 0.1% (at rated output) mixed modulation distortion ratio 0.1% (at rated output) output bandwidth 20 to 20,000 Hz±0 dB (at rated output) frequency characteristics 2 to 200,000 Hz+0-3dB damping factor 1000 (20 Hz) 200 (20 kHz) residual noise 2 mV power consumption 300 W (no signal) power supply AC 105 V 50/60 Hz W483 x H230 x D427mm 41 kg (including packaging)
※The exterior is in poor condition, so it's cheap. Maintained! A power-up version model of the LK2. It is the model that became the prototype for the first flagship model KLOUT. You can catch a glimpse of the subtlety in the bold sound. *The specifications of the input terminals are different on the left and right, and commercially available conversion plugs cannot be used. Please use the included conversion plug. The exterior has been cleaned, but marks like spots remain due to paint melting (Matsumoto Tsuyoshi)
Maintenance information: 2026.5.11 Maintained (pilot lamp mechanism part corrected, repaired. Fix the leg Assy that is off. (Since the left and right pins are used separately on the left and right, created after changing the internal wiring of the standard product ※ conversion connectors are not compatible with left and right because the way the left and right XLR pins are used completely different according to product specifications)
Accessories: conversion plug power cable
Main specifications: 80W+80W (8Ω) 160W+160W (4Ω) W320 × H75 × D265 mm weight 9.0 kg
The second installment in EL SOUND's El Musa series. This is a standard model with 1 input system. It is an amplifier with a very clear tone without any habit, yet the sound is thick enough. The sound has more scale than the spec output, and it sounds solid in both jazz and classical music. There are small scratches and dullness, and there is a feeling of use (Sasaki Shota)
Maintenance information: 2026.5.10 operation confirmed
Accessories: power cable
Main specifications: Rated output: 20W+20W (8Ω) gain 20db input impedance: 10KΩ W330 x H83 x D375 mm 7.2 kg
Maintained in April 2025! 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. (Operation is possible at AC100V, but residual hum is slightly disadvantageous)
Accessories: none
Main specifications: rated output 300W+300W (8Ω) frequency characteristics 20Hz to 20kHz dimensions W483 x H178 x D356 mm weight 28.6 kg
*For commercial use, it is sold as is. Standard model of 120V commercial power amplifier. It's high watt and can be played with plenty of room even with large speakers. Even though it's for commercial use, there is little coloring and the feeling that the sound flies straight through is very appealing. On the exterior, there are dents in the transformer and capacitor. Serial AE673105 (Tamura Eiji)
Maintenance information: 2026.5.9 operation confirmed (operation confirmed at 100V)
Accessories: none
Main specifications: 120V specification 155W+155W (8Ω) SNR 110dB W457 x D254 x H209 mm 18.1 kg
The price has been reduced. 2026/4/29 sales price 45,000 yen Maintenance has been completed, such as shield line changes, DC balance adjustment volume, idling current adjustment volume replacement, etc. This is the third generation of Kriskit's long-selling kit power amplifier. A model designed by Hideya Masutani that won the hearts of self-made enthusiasts. This unit uses Carafine as the power block capacitor, and the amplifier circuit also uses Carafine's high quality capacitors. It features a natural, thick, and clear sound in the mid-range. Overall there is dullness (Oikawa Tetsuji)
Maintenance information: 2026.4.29 Maintained (changed to shielded wire. DC balance and idling current adjustment volume exchange. (This unit uses black Cerafine for the power block capacitor and red Carafine for the amplifier section)
Accessories: none
Main specifications: 35W+35W W335×H155×D210mm 6kg
The price has been reduced. 2026/4/29 sales price 45,000 yen Maintenance has been completed, such as shield line changes, DC balance adjustment volume, idling current adjustment volume replacement, etc. This is the third generation of Kriskit's long-selling kit power amplifier. A model designed by Hideya Masutani that won the hearts of self-made enthusiasts. This unit uses Carafine as the power block capacitor, and the amplifier circuit also uses Carafine's high quality capacitors. It features a natural, thick, and clear sound in the mid-range. There is rust on the top plate (Oikawa Tetsuji)
Maintenance information: 2026.4.29 Maintained (shield wire changed, DC balance and idling current adjustment volume replaced. (This unit uses black Carafine for the power block capacitor and red Carafine for the amplifier section)
Accessories: none
Main specifications: 35W+35W W335×H155×D210mm 6kg
The price has been reduced. 2026/5/2 sales price 698,000 yen manufacturer maintenance completed! Accuphase high-grade power amplifier. An amplifier that places emphasis on stable driving rather than increasing output. The speaker sounds so lightly that it doesn't make you aware of the term driving force. The texture of the sound included in the music source has a fidelity that conveys flawlessly, and the warm sound makes you listen warmly. There are no visible scratches on the exterior, etc., and it is only dull (Kobayashi Hitoshi)
Maintenance information: 2026.5.1 manufacturer maintenance completed (meter lamp, logo display LED replacement. Exchange and addition of resistors to improve operation stability. Safety check, pressure resistance test, operation, and characteristic check are OK. (Each readjustment and cleaning)
Accessories: power cable, instruction manual (copy)
Main specifications: 125W+125W (8Ω) 1000W+1000W (1Ω) 2 low impedance drive inputs (XLR/RCA) mono/bridge switching W465 x H258 x D545 mm 49 kg
Accuphase pure Class A power amplifier. The balance is good even at low volume, and the sound like a vacuum tube amplifier is unique to pure A grade. The warm, rich tone is also a staple for the mid to high range of multiple amplifiers. There are some scratches etc. on the front. Serial H5Y290 (Fujisawa Yukishi)
Maintenance information: 2026.5.1 operation confirmed
Accessories: instruction manual, power cord
Main specifications: pure A grade stereo amplifier, 20W+20W/8Ω, 2 input systems (1 balanced/unbalanced each), can be connected to a bridge, W475 x H170 x D426 mm, 22.6 kg
*This is a commercial device and will be sold as is. Crest Audio's CC series mid-range model. The bold and sharp sound unique to business machines, which control large speakers at will with overwhelming driving power and high damping, is attractive. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2026.4.22 sound output confirmed
Accessories: none
Main specifications: 560W+560W (8Ω) damping factor 500 frequency characteristics 20Hz to 20kHz W483 × H89 × D400 mm approx. 13 kg (actual measurement)
The disposal price has been reduced (member discount does not apply). 2026/4/16 sales price 218,000 yen 12 capacitors have been replaced, attenuators and switches have been disassembled and polished and maintained! Pure A grade power amplifier by Luxman et al. Please enjoy the thick sound quality, which combines softness and strength. Mono drive with BTL connection is also possible. Dullness, there are small dents (Daiki Goto)
Maintenance information: 2026.4.16 Maintained (input attenuator, changeover switch, rear panel changeover switch disassembly contact polishing. Left and right pre-drive circuit adjustment volume, 2 capacitors, 12 capacitors, deterioration replacement. Replace 2 idling current adjustment volumes in the power amplifier section. Bad output relay contact replacement. Digital meter level adjustment All soldering on each circuit board has been fixed. (When input is balanced, the entire input volume does not pass through, so it becomes MAX)
Accessories: copy of the manual
Main specifications: stereo output 55 W+55 W (8 ohms) pure A grade operation, mono output, 220 W (balanced input), frequency characteristics, 5 Hz to 300 kHz, direct reading type level indicator, W444 x H211 x D417 mm, 22 kg
26 capacitors, 22 transistors, 12 lamps, 2 gain volumes, pin jack replacement, etc. have been fully maintained! The flagship model of the Macintosh power amplifier at the time. The heavyweight frame, the refreshing blue meter, and the braking power to drive lightly even the large speakers, and the rich, rich tone are just perfect. The clarity of low frequency contours is the highest among all Mackins of all time. There are small scratches and dullness appropriate to the model year (Oikawa Tetsuji)
Maintenance information: 2026.4.30 maintained (panel dismantling, meter section cleaning, power stage transistors, driver board transistors, capacitor deterioration replacement, lamp breakdown replacement, gain volume defect replacement, AC cable replacement, pin jack deterioration replacement, internal dust cleaning, offset, bias adjustment, operation check)
Accessories: Brand new power cable, copy of instruction manual
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. 2026/3/31 sales price 448,000 yen, 31 deteriorated parts, including capacitors, have been replaced and maintained! A teleo 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. A genuine Harman product. The exterior has dullness over time, small scratches, and bumps. Serial 1190 (Yonejima Satoshi)
Maintenance information: 2026.3.31 Maintained (replaced with deteriorated parts (23 capacitors, 8 resistors). There was deterioration in part of the solder, and it was fixed. Other inspections and adjustments))
Accessories: power cord, remo pin, 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. 2026/4/15 sales price 128,000 yen 35 deteriorated parts, including capacitors and transistors, were replaced, and maintenance such as dismantling and cleaning the main volume has been carried out! A power amplifier with a characteristic large meter. A straightforward tone with no peculiarities. There is momentum unique to the 80s, and you can enjoy crisp sound quality. It is also ideal as an introduction to separate amplifiers. The exterior has many scratches and dullness over time, and there is a chip on the upper part of the windshield panel. Serial 82113035 (Yamato Yuki)
Maintenance information: 2026.4.15 Maintained (power amplifier circuit part power transistor and transistor replacement, capacitor replacement LR main volume dismantling cleaning meter lamp, indicator lamp replacement output relay, meter relay replacement, power switch mechanism correction, interior and exterior inspection and cleaning, glass panel removal and cleaning, bias adjustment, meter adjustment, operation check. (*Part of the indicator lamp has broken down)
Accessories: copy of instruction manual
Main specifications: 130W+130W (8Ω) 170W+170W (4Ω) frequency characteristics 1Hz to 100kHz impedance 4Ω to 16Ω W450 × H174 × D422mm 18.5 kg
Maintained! The RCA terminal has been replaced with a banana-compatible SP terminal. 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. Serial 3803 (Tamura Eiji)
Maintenance information: 2026.4.15 Maintained (power stage Tr, driver Tr check. Replace part C and R deterioration in the board. Input DIN terminal rewiring, operation check, RCA, speaker terminal screwing.)
Accessories: power cable
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
*Currently sold. Yamaha commercial power amplifier. The fan is slightly louder. There is a general wound (Oikawa Tetsuji)
Maintenance information: 2026.4.7 operation confirmed
Accessories: none
Main specifications: 80W+80W (8Ω/STEREO), 110W+110W (4Ω/STEREO), 220W (8Ω/BRIDGE) W48 x H103.5 x D455mm 12 kg
Maintained including replacement of 15 transistors, 13 capacitors, 12 lamps, and 2 volumes. 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 are small scratches and dullness appropriate to the model year (Oikawa Tetsuji)
Maintenance information: 2026.4.6 maintained (GAIN vol failure → both channels replaced
Panel meter dismantling cleaning meter display lamp replacement driver board Tr deterioration, C deterioration, power stage Trxl deterioration → replacement each connector cleaning pattern re-solder mode switching SW dismantling cleaning operation check, offset, bias adjustment)
Accessories: power cable
Main specifications: 500W+500W (1000W when mono) equipped with power guard circuit W483 x D465 x H263 mm 60.3 kg
43 capacitors, 6 semi-fixed resistors, 4 lamps, 2 relays have been replaced, and maintenance has been completed, such as disassembling and cleaning the various volumes and switches. The diamond called Yamaha FET shows off its excellent purity and transparency. With this brush-up, the sharpness of the stand up and the high level of transparency have been completely revived, and you can enjoy natural Yamaha sound without getting tired of listening. There are scratches, dullness, etc. on the top plate (Oikawa Tetsuji)
Maintenance information: 2026.2.24 Maintained (left and right speaker output relays replaced, A/B changeover switch dismantling, cleaning, transistor magmentation removed. Electrolytic capacitors, semi-fixed resistors, lamp replacement. Input volume cleaning. Disassemble and clean the panel and rear changeover switch, clean the knobs, housing, and rear terminals. (Other parts readjusted, aging tests)
Accessories: copy of instruction manual
Main specifications: output 100W+100W (8Ω) SNR 115dB W436 x H151 x D370 mm 26 kg
Maintained, including volume replacement. Late wide panels. Macintosh's first power amplifier with a balanced circuit configuration. Resolution and transparency have been increased while keeping the traditional rich tone of McKinn intact. The blue meter, which can be said to be synonymous, is alive and well, and it's visually pleasing. There is peeling on the front panel, small scratches on the side, and dullness on the top plate (Oikawa Tetsuji)
Maintenance information: 2025.12.28 maintained (VOL characteristics poor in both L and RCH, → replacement meter with original vol, illumination lamp burned → replacement capacitor deterioration replacement power, meter SW internal warpage → reinforcement correction)
Accessories: instruction manual
Main specifications: 300W+300W (2/4/8Ω), 600W during MONO (2/4/8Ω) W445 x H196 x D420 mm 35 kg
The disposal price has been reduced. Member discounts are not applicable. 2026/1/11 sales price 128,000 yen Maintenance completed in 2013/1. 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, dullness, chipping, bruises, abrasions, etc. can be seen (Kobayashi Hitoshi)
Maintenance information: 2026.1.10 operation confirmed 2013.1.18 maintenance completed (each inspection adjustment, RCA terminal installation, VR replacement input/output, balance waveform measurement operation confirmed)
Accessories: power cable, copy of instruction manual
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. 2025/12/24 sales price 128,000 yen 32 capacitors have been replaced, switches have been disassembled and cleaned and maintained! 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. The exterior has noticeable rust stains on the top plate (Mizusaki Ryo)
Maintenance Information: 2025.12.24 Maintained (Electrolytic Capacitors, Tantalum Capacitors, Semi-fixed Resistors, Lamps, Cushions Replaced. Disassemble and clean the slide switch. Clean the housing, panel, and rear terminals. (Each part has been readjusted)
Accessories: copy of instruction manual
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) 2025/11/19 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
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
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
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