*Currently sold. 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: 2026.1.30 Operation confirmed
Accessories: none
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
※There is a slight gap left, but this is the current situation. ARIA commercial power amplifier. It is characterized by a strong, extrusive sound, has low-frequency grip, and is a talented person who can make a large speaker. In addition to the exterior and panel discoloration, you can also see a feeling of use such as dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2026.1.30 Operation confirmed (some gaps remain)
Accessories: none
Main specifications: 200W+200W (8Ω) 300W+300W (4Ω) W482 × H131 × D409 mm 17.6 kg (actual measurement)
Currently sold. A second-generation version of a masterpiece kit model designed by Hideya Masutani that won the hearts of self-made enthusiasts. The clear, fresh, and intense mid-range tone has an appeal that exceeds the price. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2026.1.25 Operation confirmed
Accessories: none
Main specifications: 35W+35W W335×D210×H155mm 6kg
The disposal price has been reduced! (Member prices are not applicable) 2025/12/20 sales price 148,000 yen ※ It is cheap because the meter is defective on one side (there is a meter difference between the left and right, and the starting position is not 0) Maintained! 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
59 parts, from the fuse to the electrolytic capacitor, have been replaced, and it has been completely restored and fully maintained! 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 is a power amplifier unique to the heyday of audio, with thickness, scale, and room. The exterior is dull and has a feeling of use appropriate for the model year (Hiura Katsuji)
Maintenance information: 2026.1.28 Maintained (fuse resistor, fuse replacement, relay disassembly and cleaning, internal wiring installation correction, electrolytic capacitor replacement, rear volume, switch disassembly and cleaning, terminals and housing cleaning. (Readjustment aging test for each part)
Accessories: instruction manual (copy)
Main Specifications: Real Bias Circuit Class A Operation 250W+250W (8Ω) 300W+300W (6Ω) Dimensions W488 x H199 x D480 mm Weight 30 kg
Maintained including panel cleaning! Genuine Electri Hyundai Mackin stereo power amplifier. It delivers 400W of high power from a traditional blue and black face. You can enjoy an attractive sound with a delicate and high degree of transparency added to the plump and sticky low frequencies. The exterior is slightly dull, but generally in good condition (Tomoho Asaine)
Maintenance information: 2026.1.30 maintained (panel dismantling, blue acrylic plate, adhesive peeling, panel cleaning, power supply, board, FET deterioration replacement, each SW cleaning, LED cutless operation check)
Accessories: instruction manual power cord
Main specifications: Complete quad balance circuit output 400W+400W (stereo), 800W (mono parallel) wide range output autoformer input/RCA1 system, XLR1 system W445 x H240 x D508 mm 50 kg
The price has been drastically reduced. 2026/1/28 sales price 228,000 yen Maintained in 2025/8! The world's first stereo power amplifier to use a power MOS-FET. Supported by a large power transformer, it has driving power, and the sound unique to MOS-FET, where clarity and sex appeal coexist, is attractive. It is dull and has a feeling of use. (FUJISAWA KOSHI)
Maintenance information: 2025.5.8 Maintained (power cord replacement, speaker terminal, both channel terminals, speaker relay replacement. Solder correction at the main parts of the power amplifier board. (General adjustment)
Main specifications: 120W+120W (8Ω) non-cutoff circuit adopted W435 x H192 x D410 mm 26 kg
The price has been reduced! 2026/1/25 sales price 128,000 yen genuine Stellar Vox Japan product. Goldmund compact power amplifier with high driving power while being small. You can easily experience the natural and speedy Goldmund sound. The exterior has line scratches and some paint marks. Serial 30-06-04 (Fujisawa Yukishi)
Maintenance information: 2026.1.25 Operation confirmed
Accessories: power cord
Main specifications: output 50W+50W Job Circuit adopted, W300 x H65 x D300 mm, weight 5.2 kg
Maintained! A monitor main amplifier that realizes wide bandwidth. A powerful machine that has overwhelming driving power, and its low range extrusion and tightness far exceeds the price. It is compact and has an excellent balance of 100W+100W (8Ω) power and an excellent sense of balance even for home use. On the exterior, line damage, dullness, and a feeling of use can be seen on the right side of the front panel (Kobayashi Hitoshi)
Maintenance information: 2026.1.27 Maintained (rum, selector switch disassembly contact polishing. Bad output relay contact replacement. Soldering correction for each circuit board)
Accessories: power cord
Main specifications: 100W+100W (8Ω) 160W+160W (4Ω) 320W (BTL.MONO · 8Ω) LINE 1 · 2 · 3 (Unbalanced) XLR (Balanced Stereo) XLR MONO (BTL) W435 × H116 × D414 mm 11.8 kg
The disposal price has been reduced. Member discounts are not applicable. 2026/1/19 sales price 1,150,000 yen. Current, in good condition, with original box! Luxman's flagship power amplifier. The ODNF amplifier circuit, which has supported the company's amplifiers for many years, has been revamped, and a new LIFES amplifier is installed. It has a neutral, clear, and relaxing sound, and drives well even large speakers (Yoichi Murakoshi)
Maintenance information: 2026.1.18 sound output confirmed
Accessories: instruction manual, power cable, original box
Main specifications: rated output 150W+150W (8Ω) stereo 300W+300W (4Ω) stereo 600W (8Ω) mono input sensitivity/input impedance 1.24V/150W (8Ω) GAIN 29dB unbalanced 51kΩ balance 28kΩ frequency characteristics 20Hz to 20kHz 1Hz to 130kHz S/N ratio 117 dB amplifier circuit LIFES 1.0 output configuration 3 stage Darlington 4 parallel Push pull x 2 power supply voltage AC 100V (50/60 Hz) power consumption 530 W (as stipulated in the Electrical Appliance Safety Act) 280 W (when no signal) 1.0 W (when standby) external dimensions W440 mm x H224 mm x D488 mm weight 48.4 kg
The disposal price has been reduced. Member discounts are not applicable. 2026/1/19 sales price 1,150,000 yen. Current, in good condition, with original box! Luxman's flagship power amplifier. The ODNF amplifier circuit, which has supported the company's amplifiers for many years, has been revamped, and a new LIFES amplifier is installed. It has a neutral, clear, and relaxing sound, and drives well even large speakers (Hiura Katsuji)
Maintenance information: 2026.1.19 Operation confirmed
Accessories: instruction manual, .power cable, original box
Main specifications: rated output 150W+150W (8Ω) stereo 300W+300W (4Ω) stereo 600W (8Ω) mono input sensitivity/input impedance 1.24V/150W (8Ω) GAIN 29dB unbalanced 51kΩ balance 28kΩ frequency characteristics 20Hz to 20kHz 1Hz to 130kHz S/N ratio 117 dB amplifier circuit LIFES 1.0 output configuration 3 stage Darlington 4 parallel Push pull x 2 power supply voltage AC 100V (50/60 Hz) power consumption 530 W (as stipulated in the Electrical Appliance Safety Act) 280 W (when no signal) 1.0 W (when standby) external dimensions W440 mm x H224 mm x D488 mm weight 48.4 kg
Maintenance was carried out, such as removing the meter acrylic, cleaning the internal glass, and replacing the front lamp and deteriorated parts! It is a masterpiece that still shines today, with solid sound images in the mid to low range played out from overwhelming driving power. It's an overwhelming performance that combines an uplifting sense of power and clarity with good visibility. The exterior has dullness, abrasions, etc., and a feeling of use can be seen. *The lettering on the back is misaligned or peeling. Serial GY3467/GY3459 (Asaine Tomoho)
Maintenance information: 2026.1.27 Maintained (glass panel dismantling, meter section blue film removal, panel cleaning, meter illumination lamp replacement, meter board C, relay board resistance C replacement. Power stage Tr x 1 replacement (S/N3459) block C current status OK. Operation check)
Accessories: instruction manual power cable (general purpose)
Main specifications: 1000W full-stage double balance push-pull circuit, dimensions W445 x H255 x D491 mm, weight 46 kg/1 unit
Maintained in November 2022! *The meter lamp etc. have been converted to LEDs, and it has a vivid appearance. 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. There are some scratches and dirt marks on the exterior. Also, there are places where it looks like the lamp is not attached due to color loss (Tomoho Asaine)
Maintenance information: 2022.11.12 Maintained (lamp socket internal correction. Speaker relay contact cleaning. Power stage Tr x 4 deterioration, driver board, meter, and power supply capacitor deterioration, SP terminal LCH replacement (screws become + screws), connector pattern re-soldering, contact cleaning. (Power SW/SPSW internal crack reinforcement/correction)
Accessories: copy of instruction manual, original box (different serial)
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
Denon's 3-channel surround power amplifier is in stock for the first time in a long time. If you are looking for powerful sound field reproduction with a completely discrete mono configuration, please try it out. Recommended for front and center use. There are scratches on the exterior. Serial 9027300042 (Tamura Eiji)
Maintenance information: 2026.1.23 Operation confirmed
Accessories: power cable
Main specifications: rated output 120 W (8 ohms) frequency characteristics 1 Hz to 100000 Hz (8 ohms) S/N ratio 110 dB power consumption 370 W 434 x H135 x D353 mm weight 16 kg
A stereo power amplifier equipped with a MOS class AA amplifier. Clear, natural sound It is characterized by extremely smooth low to high frequencies, and sound quality with few quirks. There is a feeling of use such as dullness, dirt, and scratches on the front and top plate (Murakoshi Yoichi)
Maintenance information: 2026.1.22 sound output confirmed
Accessories: power cord
Main specifications: 80W+80W (6Ω) 100W+100W (4Ω) MOS class AA circuit dimensions W430 × H158 × D344 mm 10.3 kg
A power amplifier with a fully discrete mono configuration. It suppresses mutual interference between channels and demonstrates its power in reproducing three-dimensional and perspective effects. It makes a clear and well-balanced sound from low to high frequencies. There are scratches and stains on the exterior, serial 6061500173 (Tamura Eiji)
Maintenance information: 2026.1.23 Operation confirmed
Accessories: power cable
Main specifications: each channel completely discrete configuration 120W+120W (8Ω) 200W+200W (4Ω) W434 x H135 x D353 mm 12.3 kg
The meter panel has been disassembled, cleaned and maintained! This model uses LEDs for the traditional glass panel and blue eyes meter light, and has a polished design that is gorgeous and has a strong presence. A ThrmalTrak bipolar power transistor manufactured by US ON Semiconductor is mounted as the power element for the output stage. The wide range and delicacy that can be said to be modern colors are added to the low center of gravity unique to conventional McKinn. The exterior is dull. Serial AAT 1590 (Tamura Eiji)
Maintenance information: 2026.1.22 Maintained (panel dismantling, removing, cleaning and reassembling acrylic plates on both meter parts, solder correction, connector cleaning, screws, tightening, mold removal. The bias and offset check output sound was checked.)
Accessories: instruction manual, power cable
Main specifications: rated output stereo 450W+450W (2/4/8Ω) total harmonic distortion ratio 0.005% input sensitivity/input impedance 4.2V/22kΩ (balance) 2.1V/22kΩ (unbalance) gain 23dB (2Ω) 26dB (4Ω) 29dB (8Ω) speaker output/1 system x 3 (2Ω x 1, 4Ω x 1, 8Ω x 1) input terminal/line RCA x 1 system, line XLR x 1 system output terminal/line RCA x 1 system, Line XLR x 1 system power consumption 12A (100V, 50/60 Hz) dimensions W445 x H240 x D559 mm weight 50 kg
Maintained! A stereo power amplifier developed for multiple amplifiers. An amplifier that sounds better than you can imagine from its size. The response is also good, so it goes great with small full-range units. It can be internally changed to 100V, 117V, 200V, and 240V, and can also be used overseas. There are scratches on the top plate on the exterior and back on the back (Ryo Mizusaki)
Maintenance information: 2026.1.22 maintained (① LR input volume replacement ② power lamp replacement ③ main board capacitor replacement ④ DC adjustment volume replacement ⑤ interior and exterior inspection cleaning, pin jack polishing, DC adjustment, operation confirmation. (Part of the blue speaker terminal is missing, but it will be repaired)
Accessories: copy of instruction manual
Main specifications: 30W+30W (8Ω) W200×H149×D316mm 5.8kg
The price has been drastically reduced! 2026/1/19 sales price 128,000 yen Maintained in 2025/2! Input RCA specification! 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 18098 (Fujisawa Yukishi)
Maintenance information: 2025.2.15 Maintained (pin jack hot side caulking treatment. Internal check, change to original circuit in both channel boards. Rch power stage Tr, Lch driver Tr, output phase correction R exchange)
Accessories: copy of instruction manual, power cord
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
This is a powerful machine that has undergone maintenance on various parts, such as capacitor replacement, solder repairs, etc., and makes you feel the sound pressure unimaginable from its small expression. It is a compact all-silicon transistor power amplifier developed in pursuit of sound transparency. You can see a feeling of use, such as appearance, dullness, and abrasions. Serial 1191110629 (Yonejima Satoshi)
Maintenance information: 2026.1.21 maintenance completed (① LR volume replacement ② power amplifier transistor and capacitor replacement ③ switch cleaning, interior and exterior inspection cleaning, pin jack polishing, operation confirmation)
Accessories: No accessories
Main specifications: effective output 25W+25W (4Ω) 20W+20W (8Ω) power band with (IHF) 20Hz-40000Hz (8Ω) input impedance 50kΩ or more load impedance 4Ω to 16Ω damping factor 46 (8Ω) power consumption 100V dimensions W152 x H111 x D264 mm weight 4.2 kg
The price has been drastically reduced! 2026/1/16 sales price 1,480,000 yen Hi-Fi Hall first arrival! The successor to the company's SPM1200MK2. In recent years, it is a famous manufacturer for DACs, etc., and its amplifiers are also top notch. It has high resolution and excellent spatial depiction, and its driving power with a wide dynamic range is attractive. Also, the blue LED, which accentuates the precision of the circuit, is beautiful in terms of design. There are no noticeable scratches on the exterior. Serial 50999 (Fujisawa Yukishi)
Maintenance information: 2026.1.16 Operation confirmed
Accessories: instruction manual, power cord, original box
Main specifications: AB class stereo power amplifier 300W+300W (8Ω) W480 x H180 x D360 mm 21.5 kg
The price has been drastically reduced. 2025/12/28 sales price 79,800 yen The switch has been thoroughly maintained, such as disassembling and polishing! Pure Class A mono power amplifier. It was developed for the purpose of wideband playback, and it boasts a natural and smooth playback sound, and you can feel the strength you wouldn't think of 20W. It is suitable for introduction to separate amplifiers and mono amplifiers. There are dullness, small scratches, rust spots, etc. of the model year (Oikawa Tetsuji)
Maintenance information: 2025.12.28 Maintained (attenuator switch disassembly contact polishing. Bad output relay contact replacement. Main board and power supply circuit soldering correction, cleaning)
Accessories: none
Main Specifications: Pure Class A Amplifier 20W+20W (8Ω) Frequency Characteristics DC to 200kHz Pure Copper Machined SP Terminal Equipped W224 x H103 x D390 mm 6.5 kg
The disposal price has been reduced. Member prices are not applicable. 2025/12/24 sales price 128,000 yen Maintained including replacement of 32 capacitors. This amplifier has a reputation for use in multiple systems. The original powerful sound with a wide range and clarity has been revived. It is thin and can be used for a wide range of purposes, from sub to multi-use. There is overall dullness and small scratches (Oikawa Tetsuji)
Maintenance information: 2025.12.24 Maintained (electrolytic capacitor, tantalum capacitor, diode, lamp, semi-fixed resistor, cushion replacement. Disassemble and clean the slide switch and relay. Chassis, panel, and terminal cleaning. (Each part adjustment, 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 price has been drastically reduced! 2026/1/11 sales price 148,000 yen Maintained! A class-grade power amplifier with 200W x 200W (6Ω) pure A class operation. This model was particularly popular among domestic power amplifiers at the time. Even when I listen to it now, it has a sense of scale, and the sound is thick and has an excellent sense of stability in the low frequencies. The high range is also sufficient, so you can enjoy lively sounds that cannot be heard on modern devices. There are line marks and threads on the exterior. Serial 1017 (Yonejima Satoshi)
Maintenance information: 2026.1.11 Maintained (block capacitor replacement in Rch main amplifier. Transistor replacement. Output relay replacement. Input volume exchange. (All left and right amplifier board soldering corrected)
Accessories: No accessories
Main specifications: 240W+240W (4Ω) 200W+200W (6Ω) 170W+170W (8Ω) SNR 124 dB W435 x H165 x D422 mm 26 kg
The disposal price has been reduced (member prices are not applicable). 2026/1/10 sales price 238,000 yen Accuphase's traditional classic 300 series. This one has been polished to a tone that stands out for its transparency and subtlety. The low frequencies are also relaxed, perfect for classical music. You can enjoy it for a long time without irritating sounds. By connecting to a bridge, it is also possible to upgrade as a mono power amplifier. There are no noticeable scratches (Sasaki Shota)
Maintenance information: 2026.1.10 Operation confirmed
Accessories: copy of manual, power cable
Main specifications: rated output (stereo) 75W+75W (8Ω) 150W+150W (4Ω) 300W+300W (2Ω) 400W+400W (1Ω) rated output (mono) 300W (8Ω) 600W (4Ω) 800W (2Ω) total harmonic distortion ratio 0.02% (4-16Ω) frequency characteristics 20Hz-20kHz (±0.2dB) input impedance 20kΩ (RCA) 40kΩ (XLR) damping factor 200 dimensions W475×H180×D417mm weight 24.4 kg
The disposal price has been reduced (member prices are not applicable). 2026/1/10 sales price 238,000 yen Accuphase's traditional classic 300 series. This one has been polished to a tone that stands out for its transparency and subtlety. The low frequencies are also relaxed, perfect for classical music. You can enjoy it for a long time without irritating sounds. By connecting to a bridge, it is also possible to upgrade as a mono power amplifier. There are no noticeable scratches (Sasaki Shota)
Maintenance information: 2026.1.10 Operation confirmed
Accessories: manual, power cable
Main specifications: rated output (stereo) 75W+75W (8Ω) 150W+150W (4Ω) 300W+300W (2Ω) 400W+400W (1Ω) rated output (mono) 300W (8Ω) 600W (4Ω) 800W (2Ω) total harmonic distortion ratio 0.02% (4-16Ω) frequency characteristics 20Hz-20kHz (±0.2dB) input impedance 20kΩ (RCA) 40kΩ (XLR) damping factor 200 dimensions W475×H180×D417mm weight 24.4 kg
Maintained down to the last detail in 2015/6. A power amplifier from Sony's high-end brand, Esprit. You can feel the strength of Sony at the time from the honest sound with a fresh and clear tone. The black face matches the subdued, unadorned tone for an even tougher impression. You can use it in both stereo and mono by switching the switch on the back panel. The exterior has minor scratches, dullness, etc. appropriate for the model year. Serial 200535 (Yonejima Satoshi)
Maintenance information: 2026.1.12 Operation confirmed 2015.6.20 Maintained (board solder correction. Heat dissipation sheet replacement. Semi-fixed resistor replacement. Capacitor replacement. Bias adjustment measurements. Check input/output waveforms. Vibration check. Check the sound output. (Exterior and interior cleaning)
2013.2.23 Maintenance (solder repair in various parts of the main parts. Replace 42 capacitors (using Nichicon). ATT contact cleaning. Check input/output waveforms. Check left and right balance. load testing. Comprehensive operation test. SP relay replacement)
Accessories: No accessories
Main specifications: 130W+130W (8Ω) MONO400W (8Ω) 3 input systems (FIXED DIRECT, FIXED C., VARIABLE) W480 x H155 x D485mm 28 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. On the exterior, there are some scratches on the front and abrasions on the top surface. Serial H5Y290 (Murakoshi Yoichi)
Maintenance information: 2026.1.8 sound output confirmed
Accessories: instruction manual, power cord (external product)
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
The price has been drastically reduced! 2026/1/7 sales price 198,000 yen Maintained! A Threshold power amplifier that uses a Stasis circuit developed by Nelson Pass. It is a popular model that combines sufficient driving power to make even large speakers sound well, and good sound separation. Small scratches, dullness, and a feeling of use can be seen. Serial G8102284 (Fujisawa Yukishi)
Maintenance information: 2026.1.7 Maintained (both channel driver circuit modified, constant changed to original. Some capacitors are defective, Lch power stage transistors have been replaced. Bias readjusted)
Accessories: power cord
Main specifications: rated output 200W+200W (20Hz to 20kHz, 8Ω) W480 x H192 x D480 mm 37 kg
Maintained! This is Seta's 4-channel power amplifier, Dreadnought. Four mono modules are built into the interior, making it ideal for combination with multiple amplifiers and bi-wired speakers (2 or more pre-out outputs are required). The powerful, fresh, and clear sound is attractive. The driving power is also excellent. You can see a feeling of use such as appearance, dullness, small scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2026.1.10 maintained (in logic circuit, IC replacement, electrolytic capacitor, ceramic capacitor replacement, wire replacement, pattern cleaning, solder correction, connector cleaning, wire pinch correction, bias and offset check, output sound check)
Accessories: power cable
Main specifications: 200W (8Ω) mono module x 5 W448 x H214 x D597 mm approx. 46 kg