Maintained! LUXMAN Class A premain amplifier. The bias current required in the Class A operation region is constantly flowing, and in the region exceeding Class A operation (15W+15W), it has a structure that naturally transitions to Class AB operation based on Class A, providing Class A sound quality and Class AB power. While it also has the fineness of the texture typical of Luxe, it captivates me with its powerful yet glossy sound. It is also equipped with a phono equalizer for MM/MC cartridges, making it an easy to use one. As for the exterior, there are many signs of use, such as bumps and dullness. ※There are marks on the TONE COMPENSATOR and REC SELECTOR knobs that look like they have been scraped. Other than that, there is a dent that hit the switch. Serial A90510756 (Yamato Yuki)
Maintenance information: 2025.9.4 maintained (output relay replacement PHONO circuit no solder correction panel switch disassembly contact polishing input/output pin jack polish long time sound output check)
Accessories: copy of instruction manual
Main specifications: effective output 100W+100W (8Ω) A grade operation area 15W+15W dimensions W438 x H176 x D467 mm weight 24 kg
This is an improved model of the VA100 Evolution. The Aura VA series has natural, highly transparent sound quality. Here, too, you can enjoy the company's unique sound, which is delicate and has no sense of exaggeration. The smooth, easy-to-listen mid-high range is perfect for vocals. The exterior has dullness and line scratches. Serial A102940 (Yonejima Satoshi)
Maintenance information: 2025.8.31 operation confirmed
Accessories: power cable
Main specifications: output 66W+66W (8Ω) dimensions W430 x H62 x D310 mm weight 5.1 kg
Maintained by the manufacturer! Denon's mid-tier Primain second-generation model. A firm, firm sound with a sense of stability that further pursues “subtlety” and “strength” from the first generation. It is compatible with various speakers, and the biggest appeal is the sense of energy in the mid to low range, which surpasses recent 2000 numbers. It is an easy-to-use model that is compatible with both records and MM/MC. The exterior is dull throughout. Serial 9117306786 (Yonejima Satoshi)
Maintenance information: 2025.9.2 manufacturer maintained (volume VR mounting nut loosened, tightening fixed. Fix broken knobs and caps. Poor input selector switch contact, disassembly contact cleaning. Left and right power amplifier boards, solder deterioration correction. 2 relays, 2 semi-fixed VR, each replacement. idling adjustment. REC selector switch, disassembly contact cleaning. Source direct, MM/MC switching, each switch contact cleaning)
Accessories: instruction manual power cable
Main specifications: 80W+80W (8Ω) PHONO (MM/MC switching) LINE 6 system W434 x H180 x D478 mm 22 kg
*Currently sold. iPod dock set is missing. Small size digital receiver amplifier. It is equipped with a huge power transformer, and it is surprising how well the sound rises and cuts. It can also be connected to analog players, CD recorders, etc. while maintaining perfect audio performance, which is very useful. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.8.31 Operation confirmed
Accessories: remote control power cable
Main specifications: rated 60W+60W (8Ω) FM reception frequency 78.0 MHz to 90.0 MHz W290 × H102 × D338 mm 6.8 kg
Onkyo's pre-main amplifier is also equipped with a network playback function. Compatible with playback of high-resolution sound sources including MQA and DSD. The focus of the sound is right, and it makes you listen to a speedy and youthful sound. Measurement microphone missing (Hiura Katsuji)
Maintenance information: 2025.8.31 sound output confirmed
Accessories: remote control power cable original box
Main specifications: maximum output 200W x 2, rated output 135W x 2. W435×H174×D383mm, weight 11.8kg
A pre-main amplifier equipped with a Class D amplifier with a fully balanced circuit configuration. Direct Power FET is used as the power element. The preamp section is equipped with a fully balanced circuit with independent left and right configurations. The power supplies for the pre section and power section are independent, and each is equipped with a power transformer. Many carefully selected high-quality audio parts are also used. The clean sound with high S/N and high driving power are attractive. The appearance is fine, with no noticeable scratches, etc. (Hiura Katsuji)
Maintenance information: 2025.8.31 sound output confirmed
Accessories: remote control power cable original box
Main specifications: 90W+90W (4Ω) total harmonic distortion ratio 0.02% size W435 ✕ H141.5 ✕ D370 mm weight 18.2 kg
This model has eliminated unnecessary auxiliary functions and has been thoroughly particular about sound quality. You can enjoy the bright sound that pursues linearity unique to pure A class. It is a model that has a high level of musical expressiveness that you wouldn't think of as a pre-main amplifier, and is still popular today. There are some scratches on the exterior, but it is a beautiful individual for its age. Serial A20410070 (Yonejima Satoshi)
Maintenance information: 2025.8.31 operation confirmed
Accessories: No accessories
Main specifications: pure A grade operation 50W+50W (8Ω) line input 8 systems (RCA x 7/XLR x 1) 2 phono systems (MM/MC) W438 x H176 x D467 mm 30 kg
The price has been reduced! 2025/8/23 sales price 99,800 yen model commemorating the 10th anniversary of establishment. The chassis has been redesigned and renewed while keeping the basic concept of SA1.0 intact. Sound quality and functionality have been upgraded. The circuit has a completely non-feedback discrete configuration, which improves driving ability and allows you to hear sound with a high sense of silence. As for the exterior, there is a small scratch on the top plate. Serial 220730017 (Fujisawa Yukishi)
Maintenance information: 2025.8.23 Operation confirmed
Accessories: power cord, original box*spike missing
Main specifications: 10W+10W (8Ω) headphone output 3W+3W (32Ω) W430 × H102 × D418 mm 8.0 kg
Thoroughly maintained, from polishing the internal contacts to exchanging the volume! The standard ES Primain model released in 1986. It is also equipped with a cartridge load selector, making it a perfect car for those who want to use it in a wide range of ways. The sound has momentum and sharpness is attractive. The exterior has small scratches and dullness appropriate for the model year (Oikawa Tetsuji)
Maintenance information: 2025.3.2 maintained (cleaning due to heavy internal dirt, speaker relay deterioration replacement, ATTENUATOR (volume VR) replacement for sound, power lamp red/green disconnection replacement, disassembly cleaning due to poor contact with other HP relays, replacement of 10 locations due to poor circuit board resistance deterioration, and 2 other INPUT selectors, Cartrich selector, RECOUT selector, Cartrich LOAD selector disassembly contacts (Polishing grease application, MUTINGSW, TONESW, disassembly and cleaning, DC bias DC balance adjustment, confirmation of sound output for each connection)
Accessories: none
Main specifications: 105W+105W (8Ω) phono input mm/MC compatible dimensions W470 x H161 x D436 mm weight 18.6 kg
The price has been reduced. 2024/6/21 sales price 79,800 yen*Remote control is out of stock (VR adjustment with remote control is not possible due to VR replacement). Maintained! An advanced ESL series aircraft, a heavyweight premain with a high-rigidity G chassis. Equipped with a MOS FET, the sound is spacious and powerful. The exterior is dull and has small scratches (Ryo Mizusaki)
Maintenance information: 2024.6.21 maintained (mute push SW replacement, main VR replacement, other speaker relay deterioration replacement, all tact SW replacement due to poor INPUT switching SW contact, replacement with 120Ω, 100Ω deterioration, other sound direct SW disassembly contact polishing cleaning, speaker switching SW, stereo/mono switching SW, direct INPUT switching SW, direct INPUT switching SW, each disassembly contact polishing cleaning grease application, DC bias DC balance (Adjust, check the sound output for each input/output connection)
Accessories: copy of instruction manual
Main specifications: output 170W+170W (4Ω) 140W+140W (6Ω) 120W+120W (8Ω) W470 x H170 x D435 mm 24 kg
LUXMAN Class A premain amplifier. The L-550A was completely remodeled, including the housing. Like a new-generation amplifier, it is extremely thick yet can express tight bass. The bright, bright tone is an appeal unique to Luxman Class A amplifiers. Serial G1100033A (Takasaki Atsushi)
Maintenance information: 2025.8.28 sound output confirmed
Accessories: remote control, instruction manual, power cable
Main specifications: output 20W+20W (8Ω) 40W+40W (4Ω) W440 × H178 × D454 mm 24.3 kg
Denon's mid-range premain amplifier equipped with a USB DAC in the standard PMA-2000 series and is compatible with high resolution. It is also equipped with Advanced AL32 Processing Plus, which can be said to be a feature. In addition to the strong conventional tones, which give a sense of thickness and energy, the sense of transparency in the high range is attractive. You can see a feeling of use, such as appearance, dullness, small scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.8.26 manufacturer maintained (FLD board diode and speaker relay replacement. Input switching SW disassembly repair. (Operation sound test)
Accessories: remote control, instruction manual, power cord, connection cord, antenna, original box (different serial)
Main specifications: 80W+80W (8Ω) unbalanced input × 4 PHONO (MM/MC) input × 1 EXT, PRE input × 1 unbalanced output (RECORDER) × 1 USB-B input × 1 coaxial digital input × 2 optical digital input × 2 other IR control inputs/outputs × 1 W434 × H182 × D431 mm weight 25 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/7/31 sales price 148,000 yen Maintained! This model was manufactured as a successor to the company's A740. Like the A740, it has an AB class drive. The equalizer section is equipped with a 3-stage cartridge load switching function and a phono input sensitivity adjustment function. It is equipped with loudness control, low cut/high cut filters, tape copy switches, tone deft switches, muting switches, etc., and detailed settings are possible according to the mechanical appearance. There is a feeling of use such as small scratches, paint peeling, etc. Serial 16899 (Takasaki Atsushi)
Maintenance information: 2025.7.9 maintained (operation check, PHONO L/R internal short → sensitivity switching SW connector incorrect installation → correction
Other internal checks have been carried out and maintained by other companies. (Check the operation of each part)
Accessories: power cord
Main specifications: 75W+75W W452×H151×D348mm 13kg
The price has been reduced. 2025/8/23 sales price 99,800 yen*Remote control is out of stock. Maintained by Yukim in 2024. Smash hit pre-main from the late 90s with a flat texture and tone. It can be said that the perfect balance of sound regardless of the source and the compact body are an amplifier that meets the needs of the times. There are small scratches on the exterior. Serial 2000030 (Hiura Katsuji)
Maintenance information: 2024.8.30 manufacturer maintenance completed (volume pot cleaning, selector SW cleaning, board solder pattern verification correction, operation confirmation)
Accessories: instruction manual (copy) power cable
Main specifications: 65W+65W (8Ω) W430 × H61 × D310 mm weight 8.0 kg
The volume and switch were dismantled and polished in 2025/3, and capacitors were also replaced, and full maintenance has been completed! Lux midsize premain amplifier. This model is attractive for its smooth warmth in the mid to low range like a vacuum tube amplifier and an energetic sound above the output value. It makes you enjoy female vocals and easy listening in a supple manner. The sophisticated design, which is retro but not old-fashioned, is also attractive. There are scratches and corner marks in places on the cabinet (Oikawa Tetsuji)
Maintenance information: 2025.8.24 operation confirmed
2025.3.1 maintained (25 electrolytic capacitors, 4 bias/offset semi-fixed resistors, pilot lamp replacement volume, BALANCE, TREBLE, BASS volume disassembly and cleaning, RCA terminal cleaning, frequency characteristics of each toggle switch, distortion ratio measured)
Accessories: power cable, copy of instruction manual
Main specifications: 50W+50W (8Ω) PhonO2 system frequency characteristics 10Hz to 60kHz W450 × H160 × D268 mm 11 kg
An entry machine with high cost performance. The clean design allows for a total of 6 analog audio input systems, including a Phono (MM) terminal. Furthermore, it has a built-in 192 kHz/24 bit D/A converter, making it an easy-to-use model. As for the exterior, there are some threads on the top plate and scratches on the corners. Serial Y639762Y0 (Tamura Eiji)
Maintenance information: 2025.8.17 operation confirmed
Accessories: remote control, instruction manual
Main Specifications: Playback Frequency Band 10Hz to 100kHz Rated Output 60W+60W/8Ω 70W+70W/6Ω Analog Input: Line 5 PHONO x 1 System Digital Input: Optical Digital x 1 Coaxial Digital x 1 W435 x H151 x D387 mm 9 kg
The price has been reduced. 2025/8/14 sales price 198,000 yen Maintained! It is a pre-main amplifier with a simple design and full functionality. It is a delicate and careful tone with a luster in a lively, extruded and energetic sound. It shines with a sense of power that goes well with vintage speakers. There is a feeling of use on the exterior, such as dirt, dullness, and scuff marks. Serial J4X377 (Murakoshi Yoichi)
Maintenance information: 2025.8.12 maintained (3 left CH power amplifier output stage MOSFETs, balance VR, 5 electrolytic capacitors, 6 resistors, 2 relays, 2 semi-fixed VR replaced. Tone switch disassembly, polishing, cleaning, and protective agent application. Solder correction, simple cleaning. Bias and offset check adjustment, audio check for each input/output)
Accessories: instruction manual
Main specifications: 150w+150w (8Ω) PHONO (MM/ MC) W445 × H160 × D370 mm 20.5 kg
Maintained by AXISS! This is an upgrade from AX-5. In addition to the detailed mid-high range, which inherits the tone unique to Ayre, the majestic sense of scale that goes beyond the boundaries of pre-main is attractive. The subtlety and fineness have been further improved compared to the original. *The remote control makes an operating noise when the volume is turned, but this is a specification. The exterior is dull and has threads. Serial 22E0101H (Yonejima Satoshi)
Maintenance information: 2025.8.23 Maintained by the manufacturer (contact maintenance due to poor contact between the Volume mechanism and rotary switch (± L&R each)). Also, the input changeover switch is equipped with contacts. Battery case cleaned due to poor contact due to remote control battery fluid leak. Inspection of all functions. Characteristics check. Sound output running check.) 2017.2.9 manufacturer maintained (upgrade to AX-5 Twenty (all front end/gain stage/driver/output stages were completely replaced with new Twenty specification boards)
Accessories: instruction manual, remote control, power cord, original box
Main Specifications: Output Power: 125W (8Ω) x 2, 250W (4Ω) x 2 Inputs: 6 systems (4 x balance, 2 x single-ended) W440 x H120 x D480 mm Weight 21.0 kg
Maintained! The balance between the good sound typical of the 70s Accuphase and the high frequency with good extension of the FET amplifier is wonderful, and it makes you enjoy the dense sound that is hard to feel with modern amplifiers. The champagne gold and VU meter designs are also a model that shines visually. There are small scratches on the exterior. Serial G2S119 (Yonejima Satoshi)
Maintenance information: 2025.8.20 Maintained (tone SW decomposition polishing cleaning protective agent applied. Output relays, electrolytic capacitors, semi-fixed VR. Replace each film capacitor. Solder correction. Card edge contact cleaning. Remove foreign objects. Bias and offset adjustments. (Voice check for each input/output)
Accessories: instruction manual, power cord
Main specifications: rated output 130W+130W (8Ω) 180W+180W (4Ω) W445 × H160 × D70 mm 20 kg
The top model of the premain amplifier launched by AccuPhase to commemorate its 40th anniversary. Uses AAVA volume. The power amplifier section with pure Class A operation is designed to be resistant to changes in the surrounding environment. An overwhelming amount of information filled with a sense of silence and scale. It's the ultimate premain with a high degree of perfection. The exterior is a beautiful item with no conspicuous scratches or stains. Serial D5Y085 (Yonejima Satoshi)
Maintenance information: 2025.8.21 operation confirmed
Accessories: remote control instruction manual power cord
Main specifications: 30W+30W (8Ω), 60W+60W (4Ω) frequency characteristics 20Hz to 20kHz input terminals/balance (XLR) x 2 systems, unbalance (RCA) x 5 systems. Up to 2 option boards can be added to the rear panel W465 x H191 x D428 mm 24.7 kg
The price has been reduced. 2025/8/20 sales price 298,000 yen 8 transistors, 15 lamps have been replaced, volume dismantled and cleaned, etc. Maintenance has been completed! This amplifier marked the end of the X series, which began with the AU-X1. The clear sound with full torque is proof that it was created by throwing material into it. In addition to the powerful Sansui sound that combines sharpness and richness, it is a masterpiece machine that still boasts high popularity due to the beauty of the sound unique to MOS. There is a scratch on the top plate (Oikawa Tetsuji)
Maintenance information: 2025.8.20 maintained (main volume dismantling and cleaning, power amplifier volume (2 pieces) dismantling and cleaning, power amplifier direct switch disassembly and polishing, other switch dismantling and polishing (input selector, tape selector, reck-out, subsonic, processor (3 locations), video, speaker, muting, presence), output relay, headphone replacement, indicator lamp, Illumination lamp replacement, power supply diode (4 pieces), transistor (8 pieces) replacement, power amplifier, power supply solder repair, internal inspection and cleaning, operation confirmation)
Accessories: copy of instruction manual
Main specifications: effective output 150W+150W (6Ω) 110W+110W (8Ω) W470 x H178 x D486 mm weight 35.1 kg
This model is a major upgrade to the popular X-PM7. Both sound quality and power have been improved, and the residual noise level is less than one-tenth of the previous model. Comes with an external superclock input, and 6 types of sampling can be selected by using an external clock. The appearance is fine, with no noticeable scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.8.20 Operation confirmed
Accessories: remote control, instruction manual, power cord, original box
Main specifications: analog input RCAx3, xlRx2 clock input terminals: BNC connector (75Ω terminal) clock frequency: 5.6448, 6.144, 11.2896, 12.288, 22.5792, 24.576 MHz signal level: 5VP-P maximum output 32 W x 2 (4 Ω) 20 W x 2 (8 Ω) total harmonic distortion ratio 0.005% (1 kHz, 1 W output) frequency characteristics 5 Hz to 90 kHz power supply voltage AC 100V 50/ 60 Hz power consumption 33 W dimensions W420 x H80 x D360 mm weight 10.5 kg
Manufacturer's maintenance completed! The first generation of the highly popular Denon Primaine 2000 series. The strong and elastic sense of power is the best in the series, and the driving ability is excellent. The overwhelming cost performance is attractive. It is compatible with MM/MC, which is great even for analog fans, so record playback is perfect. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.8.19 manufacturer maintained (protection circuit relay replacement, semi-fixed volume replacement for bias current adjustment, phono circuit MM/MC changeover switch replacement, input selector switch replacement, contact cleaning, rework. Main board, microcomputer board soldering correction, bias current adjustment, sound output, operation test)
Accessories: copy of instruction manual, power cord
Main specifications: 160W+160W (4Ω) line input 4 systems, 1 phono system (MM/MC switching: back switch), 2 tape systems, W434 x H180 x D478 mm, 20 kg
The price has been reduced. 2025.8.3 sale price 69,800 yen Marantz mid-level premain. It features a sense of transparency and delicate tone typical of Marantz. It is supported by a thin yet firm power supply, and you can enjoy sound with a sense of stability. There are small scratches and dullness on the exterior due to use over time. Serial 20020827003893 (Tomoho Asaine)
Maintenance information: 2025.8.3 operation confirmed
Accessories: remote control instruction manual power cord
Main specifications: 90W+90W (8Ω) 140W+140W (4Ω) frequency characteristics 5Hz to 100kHz W440 × H123 × D444 mm 18 kg
The Victor V1 series premain amplifier is designed with an emphasis on sound quality and is still popular today. Simple is the best, not only in terms of appearance and size, but also in terms of volume, selector, and presence! Phono is also compatible with MM/MC. There is a lot of feeling of use, such as dullness and small scratches throughout. Serial 06000206 (Murakoshi Yoichi)
Maintenance information: 2025.8.14 sound output confirmed
Accessories: remote control
Main specifications: 40W+40W (8Ω) 80W+80W (4Ω) W360 × H129 × D337 mm 13.5 kg
The disposal price has been reduced! (Member prices are not applicable) 2025/7/20 sales price 148,000 yen Maintained! LUXMAN's line-only premain amplifier. It is a model that omits both the headphone terminal and the remote control, and has thoroughly implemented simple is best. After all, the middle range is thick and the high range is smooth, lax sound. The supple tone gives a sense of security, and the warmth similar to vacuum tube amplifiers is attractive. Small scratches and dullness can be seen on the front and top plate. Serial W50610755 (Jun Tamai)
Maintenance information: 2025.7.20 Maintained (defective IC replacement output relay contact defective exchange switch and volume disassembly contact polishing in the power supply circuit)
Accessories: copy of instruction manual
Main specifications: 50W+50W (8Ω) W438 × H155 × D446mm 23.0 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/6/22 sales price 59,800 yen Master volume dismantling, switch disassembly, polishing, etc. maintenance completed! This is a heavyweight premain amplifier manufactured by PIONEER. Since they are only from the bubble period, large quantities of material were used, and they are highly cost-effective amplifiers. Even the smallest sounds are clearly reproduced, and the sound quality, which is both thick, shows how well crafted it was unique to that time. You can see a feeling of use on the exterior, such as noticeable scratches, dullness, scuffs, etc. in the center of the front panel (Kobayashi Hitoshi)
Maintenance information: 2025.6.22 maintenance completed (output relay replacement, master volume dismantling, cleaning switch disassembly and polishing (input selector, reck-out, phono selector, speaker switching) push switch disassembly and polishing (EQ SW, loudness, TAPE3, direct SW) muting switch replacement, main amplifier part solder repair, other volume cleaning, interior and exterior inspection cleaning, pin jack polishing, operation confirmation)
Accessories: copy of the manual
Main specifications: output 100W+100W (8Ω) 120W+120W (6Ω) 150W+150W (4Ω) power consumption 270W W420 x H162 x D435 mm 19.6 kg