*There is slight unevenness in the brightness of the LCD display. A small but authentic pre-main amplifier with a built-in FM/AM tuner. Comes with a PHONO input (MM/MC), so you can fully enjoy analog. It's a perfect match for those who can't play very loudly or for second systems. There are small scratches throughout. Serial 2121505579 (Fujisawa Yukishi)
Maintenance information: 2026.2.2 operation confirmed
Accessories: remote control, power cord
Main specifications: 75W+75W (8Ω) 150W+150W (4Ω) MC/MM compatible AM/FM tuner built-in W300 x H80 x D341 mm 5.5 kg
Maintenance has been completed, such as dismantling and cleaning the main volume and disassembling and polishing of each switch! It has a thick mid to low range typical of Sansui, and the base line that clearly reveals the outline is an appeal unique to the KX series. There are small scratches on the exterior, but it is a beautiful individual for its age. Serial 602126306 (Tamura Eiji)
Maintenance information: 2026.2.1 Maintained (main volume dismantled and cleaned. Switch disassembly and polishing (input selector, power amplifier direct, source direct, reck-out, tape) push switch disassembly and polishing (tone, subsonic, loud noise, processor, MM/MC) output relay replacement. Replace the protector capacitor. Repair the main parts of the solder. REC cover attached (Interior and exterior inspection and cleaning, operation confirmation)
Accessories: No accessories
Main specifications: 90W+90W (8Ω) phono mm/MC compatible dimensions W430 x H161 x D446 mm weight 18.0 kg
Comes with original box, good condition! A 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. The exterior is generally in good condition, although there is a slight feeling of use. Serial 200510006 (Yamato Yuki)
Maintenance information: 2026.1.29 Operation confirmed
Accessories: original box instruction manual power cable spike
Main specifications: 10W+10W (8Ω) headphone output 3W+3W (32Ω) W430 × H102 × D418 mm 8.0 kg
Comes with original box! A model commemorating the 50th anniversary of the founding of Accuphase. The preamp section is equipped with a balanced AAVA system, and the input amplifier and I/V conversion amplifier have a discrete configuration to achieve even lower noise, and the excellent separation of momentum that surpasses even new-age separate systems shines through. The exterior is generally in good condition, but there is a small scratch on the front panel top plate. Serial COY231 (Yamato Yuki)
Maintenance information: 2026.1.31 Operation confirmed
Accessories: original box, remote control, instruction manual, power cable
Main specifications:), 100w/ch (4Ω), 50w/ch (8Ω) damping factor 1000 (8Ω 50Hz) load impedance 2 to 16Ω W465 x H239 x D502 mm weight 36 kg
Maintenance completed in 2023/8. A popular model from the late Sansui period. While expanding the range, the sound that makes you feel the thickness and energy unique to the company still fits well with modern speakers. The punch power in the mid to low range to easily drive a medium bookshelf speaker is truly amazing. The exterior has a feeling of use such as dullness and small scratches (Kobayashi Hitoshi)
Maintenance information: 2026.1.17 operation confirmed 2023.8.22 maintained (input selector power amplifier direct source direct recout tape switch disassembly polishing grease coating output relay replacement solder main part repair each volume switch cleaning interior and exterior inspection cleaning adjustment inspection operation confirmed)
Accessories: copy of instruction manual
Main specifications: 90W+90W NEW HYPERα-X balance circuit PHONO (MM/MC) power amplifier with direct function W430 x H162 x D452 mm 18 kg
The price has been reduced. 2026/1/25 Marantz network receiver with sales price 49,800 yen. It is a model with a network player function attached to the premain amplifier, and you can enjoy music by various methods such as connecting not only CDs and record players but also Bluetooth, NAS, etc., and streaming. The signal-to-noise ratio and spatial expression with a high sense of transparency are attractive. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2026.1.24 Operation confirmed
Accessories: remote control, power cable, antenna
Main specifications: rated output 75W+75W (8Ω) DSD5.6MHz/PCM192 kHz compatible audio input terminals/analog x 3, Phono (MM) x 1, optical digital x 1, coaxial digital x 1, other terminal/network x 1, USB (front) x 1, Bluetooth/Wi-Fi antenna input x 2 FM antenna input x 1 AM antenna input x 1 Marantz remote bus (RC-5) input/output x 1 IR flasher Input x 1 wireless LAN/IEEE 802.11 a/b/g/n compliant (Wi-Fi® compliant) /2.4 GHz, 5 GHz Bluetooth/version 4.1 compatible profile A2DP1.2, AVRCP1.5 compatible codec SBC transmission output/communication distance Class1/approx. 30 m (line of sight) W440 x H105 x D378 mm 7.9 kg
The price has been reduced! 2026/1/17 sales price 310,000 yen Main volume has been dismantled and maintained, such as cleaning! This α907 limited model is limited to 2000 units. A premain amplifier that stands out for its high SNR and good sound unique to MOS-FET. The fine particle feel in the mid to high range is one of the best in the history of SANSUI premain amplifiers. Coupled with the thick, energetic mid-low range, it is a famous model that has not faded its appeal even now. There are some scratches and dullness on the exterior. Serial 605072022 (Tamura Eiji)
Maintenance information: 2026.1.17 Maintained (main volume dismantled, cleaned and adjusted. Replace output relays and headphone relays. Power supply circuit transistor replacement. Switch disassembly and polishing (input selector, power amplifier direct, source direct, tape, reckout, loudness, subsonic, muting, processor) power amplifier, power supply part solder repair. (Interior and exterior inspection and cleaning, operation confirmation)
Accessories: instruction manual
Main specifications: 80W+80W (8Ω) MM/MC compatible MOS-FET use W466 × H166 × D453 mm 34 kg
Maintained by Marantz Service! This model was developed by introducing PM-11S3 technology. It is a premain amplifier with a high degree of perfection, such as a smooth high frequency with high SN, a low range with a rich sense of volume, and a sound field space with an excellent sense of depth. There is a small scratch on the front side of the top plate (Sasaki Shota)
Maintenance information: 2026.1.29 manufacturer maintained (PRE AMP board IC, transistor replacement. Each part was inspected and operation tested.)
Accessories: remote control, manual, power cable
Main specifications: 90W+90W (8Ω) 140W+140W (4Ω) Phono input 1 system (MM/MC) line input 3 systems W440 x H123 x 457 mm 18.5 kg
*Currently sold. Pioneer's entry-class premain amplifier. The design is simple and easy to handle, and the high-quality design is attractive for the price. It also has a full range of functions, and is recommended as an introductory unit or as a secondary unit in a small space. The exterior is dull and has a feeling of use (Takahashi Nobuyuki)
Maintenance information: 2026.1.28 sound output confirmed
Accessories: power cable ※ remote control missing
Main specifications: 45W+45W (8Ω) phono 1 system (MM) line input 5 systems W420 × H114 × D307 mm 5.9 kg
In addition to the output stage, this is a Seoul Note integrated amplifier that uses a completely balanced non-feedback circuit for the voltage amplification stage and power supply circuit. The high quality sound that combines high driving capability with the company's unique sense of speed is attractive. The exterior has small scratches and paint scuffs (Hiura Katsuji)
Maintenance information: 2026.1.27 sound output confirmed
Accessories: instruction manual, remote control, power cable, spike, original box
Main specifications: 100W+100W (8Ω) 200W+200W (4Ω) size W430 ✕ H160 ✕ D410 mm 20 kg
A small but authentic pre-main amplifier with a built-in FM/AM tuner. Comes with PHONO input (MM/MC), so you can fully enjoy analog. It's a perfect match for those who can't play very loudly or for second systems. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2026.1.25 Operation confirmed
Accessories: remote control, instruction manual, power cable
Main specifications: 75W+75W (8Ω) 150W+150W (4Ω) MC/MM compatible AM/FM tuner built-in W300 x H80 x D341 mm 5.5 kg
Good condition! Comes with original box! 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. There are no visible scratches on the exterior, etc., and it is good with just the degree of dullness (Kobayashi Hitoshi)
Maintenance information: 2026.1.25 Operation confirmed
Accessories: remote control, instruction manual, power cable, original box
Main specifications: output 20W+20W (8Ω) 40W+40W (4Ω) W440 × H178 × D454 mm 24.3 kg
We have thoroughly maintained everything from replacing deteriorated parts to decomposing, polishing, cleaning, etc. for each VOL, SW, etc.! The last Sansui amplifier NRA (New Reference Amplifier) is a complete reversal from the strong Sansui sound up until now, and it has a natural, well-grained, and supple tone. The smooth sound of the mid to high range sounds can be heard in Sansui with a texture close to the MOS system. The exterior is generally good, but there is a small scratch on the side wood (Matsumoto Tsuyoshi)
Maintenance information: 2026.1.18 Maintained (main volume dismantling cleaning output relay, headphone relay replacement switch disassembly and polishing (input selector, power amplifier direct, reckout, processor, MMMC switching) switch replacement (speaker 1, 2, tone, loudness, subsonic) power amplifier, power supply unit, etc. Solder repair ⑥ protector capacitor replacement other volume cleaning, interior and exterior (Check the cleaning operation)
Accessories: instruction manual
Main specifications: PHONO (MM, MC) input available 130W+130W (8Ω) W462 x H165 x D446mm 23.6 kg
The price has been reduced! 2026/1/22 sales price 398,000 yen This is a pre-main amplifier with a high degree of perfection that is comparable to a separate system, and has extremely high sound quality. An attractive sound development with high SN, high resolution, and high density that cannot be enjoyed in domestic production without lowering the center of gravity too much. Since it has a pre-out, it is an ideal product as a stepping stone for the company's separate system construction. Since there is no optional phono module, INPUT1 is at normal line level. There is a light feeling of use over time, but it is generally good. Serial E00810 (Yamato Yuki)
Maintenance information: 2026.1.22 operation confirmed
Accessories: remote control instruction manual power cable
Main specifications: Line-only model, 4 input unbalanced (RCA) systems, 3 balanced (XLR) speaker output, 1 system output, 100W+100W, W455 x H150 x D385 mm, weight 22.0 kg
The disposal price has been reduced! (Member prices are not applicable) 2026/1/15 sales price 39,800 yen An entry pre-main amplifier that inherits the high sound quality technology of the NE series. Equipped with a Bluetooth function, it is possible to play content from smartphones, etc. In addition to 4 analog inputs and a Phono input compatible with mm cartridges, it is equipped with 1 coaxial digital input and 2 optical digital inputs. As for the exterior, there are some dents on the top plate. Serial BLC27231118117 (Tamura Eiji)
Maintenance information: 2026.1.9 operation confirmed
Accessories: remote control, instruction manual
Main specifications: rated output 45W/8Ω/70W/4Ω, compatible impedance 4Ω to 16Ω, playback frequency band, 5Hz to 100kHz, W434 x H122 x D307 mm, 7.4 kg
Comes with OP-ESLA1 option board (list price 50,000 yen)! With a fully balanced pre-section directly related to Grandioso and ClassA power-driven specifications, the natural yet high-density tone and the way the shadows of the sound image are produced is excellent. It has a dual monaural configuration from the pre to the final stage of power, and the separation is perfect. There are slight scratches and stains on the front and top plate (Takasaki Atsushi)
Maintenance information: 2026.1.23 Operation confirmed
Accessories: remote control, manual, power cord, original box
Main specifications: output 30W+30W (8Ω) 60W+60W (4Ω) frequency characteristics 10Hz~100kHz (0dB/ —3dB, 1W output) S/N ratio 104 dB total harmonic distortion ratio 0.006% (30 W) W445 x 191 x 468 mm (including protrusions) 32 kg
Full maintenance has been completed, such as replacing deteriorated parts, disassembling and polishing switches, etc.! The thickness of the mid range and the thickness of the low range are an exciting masterpiece pre-main. The special phono part uses a transformer for built-in MC boosting. This quality is a must-listen for record fans. Compared to lower models, it also has the advantage of being able to enjoy classical music. The exterior has a feeling of use such as dullness. Serial 823071541 (Yamato Yuki)
Maintenance information: 2025.12.21 maintained (men volume dismantling cleaning balance volume exchange output relay, headphone relay replacement switch disassembly and polishing (input selector, reck-out, tone, filter, muting, tape) ⑤ main amplifier transistors (16 pieces), 33ZD diodes (2 pieces) replacement protector section capacitors (2 pieces) replacement tone circuit capacitors (4 pieces) replacement Power supply unit floating resistor exchange volume, switch cleaning pin jack polishing solder repair interior and exterior cleaning operation confirmation)
Accessories: copy of instruction manual
Main specifications: 130W+130W (8Ω) PHONO (MM/MC) 2 systems W460 x H160 x D444 mm 18 kg
A small amplifier ideal for desktops, etc. Although it is compact, it is Bluetooth compatible, so you can easily enjoy music. Serial V180016967 (Tamura Eiji)
Maintenance information: 2026.1.21 operation confirmed
Accessories: AC adapter
Main specifications: 60W+60W (4Ω) frequency characteristics 20 to 20,000 Hz S/N ratio 103dB W86 x H117 x D174 mm (including antennas, knobs, etc.) Weight 0.5 kg/body
An original digital amplifier from the Stereo magazine appendix, neatly cased. It is a co-planning model between Luxman and STEREO magazine. There's also a power supply section this time. There are scratches on the exterior (Tamura Eiji)
Maintenance information: 2026.1.21 operation confirmed
Accessories: power supply unit, power cable
Main specifications: rated output 12 W+12 W (8 ohms) frequency characteristics 10 Hz to 40,000 Hz S/N ratio 90 dB speaker impedance 4 ohms to 8 ohms
The price has been drastically reduced. 2025/12/26 sales price 118,000 yen Wood case has been carefully maintained in every detail, from exterior maintenance to switch and volume disassembly contact polishing! This pre-main amplifier was announced as a successor to the SQ505. The lax sound of yesteryear has been inherited, and you can feel the nuance of warm vacuum tubes. The output is modest at 35W, but I feel that it is more powerful than the numerical value. Combinations such as JBL L26 are recommended (Murakoshi Yoichi)
Maintenance information: 2025.12.23 wood case maintained (exterior repair/coloring) 2025.12.3 maintained (switch and volume disassembly contact polishing. Replaced 6 transistors in the equalizer circuit. Replace 4 transistors and 4 capacitors in the protection circuit. 8 transistors in the tone circuit were replaced. Replace the power lamp. I/O pin jack polish. Electric circuit DC adjustment, idling current adjustment)
Accessories: Power cable instruction manual (copy)
Main specifications: output 35W+35W (8Ω) PHONOM2 system Recout 2 system dimensions W450 x H160 x D268 mm weight 10 kg
Maintained by the manufacturer! Marantz high end premain amplifier PM-11S3. A new circuit “SA Driver” has been introduced to the power amplifier circuit, and all circuits from input to speaker output have been speeded up. It is an amplifier that boasts spatial expressiveness, detailed tone, and a rich sense of scale. The exterior is in a state where there is a feeling of use such as dullness over time. Serial 15001426000633 (Yamato Yuki)
Accessories: remote control power cable instruction manual
Main specifications: XLR x 1, phono x 1, power amplifier direct x 1, output terminal REC out x 2, pre-out x 1, headphone x 1, W440 x H168 x D453 mm, 26.6 kg
The first model in DENON's classic premain S10 series. Unlike the successor model, it is also attractive that it has no height and is compact. The sound quality is characterized by traditional thick, voluminous low frequencies. The sound quality is full of energy and has a sense of dynamism, and the music sounds vividly. The exterior has a feeling of use such as dullness. Serial 5042400491 (Hiura Katsuji)
Maintenance information: 2026.1.17 sound output confirmed
Accessories: instruction manual power cable
Main specifications: UHC-MOS single push circuit 50W+50W (8Ω) PHONO (MM/MC) power consumption 160W dimensions W434 x H137 x D365 mm weight 15.2 kg
Maintenance has been completed for switches, volume disassembly, contact polishing, replacement of deteriorated parts, etc. A premain amplifier that is an improved version of the L-507. It is an amplifier with an impressive thickness in the mid-range. I think it can handle a wide range of sounds. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.12.28 maintained (switch, volume disassembly contact polishing, input/output pin jack polish, output relay contact defect replacement, main amplifier idling current adjustment volume exchange, 7 transistors in the protection circuit, 2 resistors replaced)
Accessories: copy of instruction manual
Main specifications: 55W+55W (8Ω) W450 × H164 × D310 mm 11.4 kg
It is a thin premain amplifier with a design and sound quality that makes you feel like it was made in England. The warm, fresh tone makes you feel a British taste. It has a natural sound that is natural and easy to hear, and is compatible with various genres. There is a thin scratch on the top plate. Serial A321J1055 (Fujisawa Yukishi)
Maintenance information: 2026.1.18 Operation confirmed
Accessories: remote control, instruction manual, power cord
Main specifications: 100W+100W (8Ω) phono MM/ MC W430 × H110 × D370 mm 10.8 kg
Maintenance has been completed with volume dismantling and cleaning, switch disassembly and polishing, etc.! This is a 907 series higher class premain amplifier. Not only is the sound thick and wide range, but it is also a deep and majestic sound with a sense of weight. The XR series during this period has particularly horsepower in the mid to low range, and it sounds briskly ROCK and JAZZ. The exterior is dull. Also, there is a slight float on the side panel. Serial 613091385 (Yonejima Satoshi)
Maintenance information: 2026.1.18 Maintained (main volume dismantled, cleaned and adjusted. Switch disassembly and polishing (input selector, power amplifier direct, source direct, reck-out, tape, loudness, subsonic, muting, processor, MM/MC switching). Replace output relays and headphone relays. Power supply transistor replacement. Power amplifiers, power supply circuit parts, and other solder repairs. Volume cleaning, interior and exterior inspection cleaning, operation confirmation)
Accessories: original box
Main specifications: Equipped with HYPERα-X balance circuit, effective output 190 w+190 w dimensions W466 x H163 x D452 mm, weight 33 kg
31 capacitors, 28 transistors, and other deteriorated parts have been replaced, volume dismantled and cleaned, etc., and have been brushed up! A flagship model from the 70s. Only this model has a very aggressive sound, and the sound comes out hot and forward. This is one car that makes jazz and rock sound crisp, thick, and exhilarating. Not only is the sound completely different from modern amplifiers, but the retro face is also attractive. Dullness, abrasions, etc. can be seen on the exterior. Serial 214826149 (Yamato Yuki)
Maintenance Information: 2026.1.17 Maintained (capacitor, transistor, main VR, resistor, relay, bulb, fuse, lamp replacement. Tone V decomposition cleaning, grease coating operation confirmation, input/output waveform confirmation, load test (1 kHz sine wave, 80 W+80 W at 8 ohm load) sound output test)
Accessories: none
Main specifications: 80W+80W (8Ω) frequency characteristics 5Hz to 100kHz tone control/bass, midrange, treble 3-stage adjustment W462 x H155 x D316 mm 17.5 kg
A new-generation premain amplifier that integrates the performance of a separate reference amplifier into a single housing. Fully balanced configuration from input to output. The smooth tone in the mid to high range is impressive, and it beautifully reproduces vocals, strings, etc. The bass also has a sufficient sense of volume, and the sense of scale is perfect (Sasaki Shota)
Maintenance information: 2026.1.16 Operation confirmed
Accessories: remote control, manual, power cable, original box
Main specifications: 200W+200W (8Ω) 400W+400W (4Ω) playback frequency band 5Hz to 50kHz input: PHONO (MM, MC) 1 system, 4 analog systems W440 x H168 x D453 mm 21.5 kg
Small pre-main amplifier with built-in Marantz USB DAC. It was also developed in parallel with the new flagship Primaine “PM-10,” and at a reasonable price, it has a sound that shows a glimpse of that. Recommended for those starting out with serious audio (Sasaki Shota)
Maintenance information: 2026.1.16 Operation confirmed
Accessories: remote control, manual, power cable, connection cable
Main specifications: USB input PCM384 kHz/DSD 11.2 MHz rated output 35W+35W (8Ω) dynamic power 70W+70W (4Ω) input terminal/USB-B x 1, USB-A (front) x 1, coaxial digital x 1, optical digital x 2, analog x 2, output terminal/headphone x 1, subwoofer x 1, W304 x H107 x D352 mm 5.8 kg
Maintenance has been completed, such as replacing 2 output relays, 5 switches, and 2 capacitors, disassembling and polishing the main volume cleaning switch. Best buy model from the late 90s. It inherits the traditional diamond actuation circuit, and is characterized by a well-balanced sound with a refined circuit configuration, such as a sense of SN in the mid-high range, and the certainty of the outline in the low range. The exterior is dull over time (Oikawa Tetsuji)
Maintenance information: 2026.1.14 maintained (main volume dismantling and cleaning switch disassembly and polishing (input selector, reck-out, power amplifier direct, processor, MM/MC switching SW) switch replacement (tone, speaker 1, 2, loudness, subsonic) output relay replacement protector part capacitor replacement solder main part repair CD terminal repair interior and exterior inspection cleaning, other volume cleaning, screws (Installation, operation check)
Accessories: copy of instruction manual
Main specifications: 80W+80W (8Ω) phono (MM/MC) switching dimensions W432 x H165 x D450 mm weight 18 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. High quality sound filled with an overwhelming 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: 2026.1.13 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