※The remote control is out of stock. You can generally make settings with the front panel buttons while watching on the TV screen. Operation has been confirmed, but detailed functions have not been checked, so it is currently sold. Denon's 9.2 channel compatible AV amplifier. Please use it to build a theater system. The exterior is dull and dirty (Ryo Mizusaki)
Maintenance information: 2025.5.4 operation confirmed (sound output OK for all 9 channels except front wide, HDMI output test OK)
Accessories: instruction manual, power cord, antenna, microphone
Main specifications: rated output/front: 140W+140W, center: 140W, surround: 140W+140W, surround back: 140W+140W, front height/width: 140W+140W (8Ω, 20Hz to 20kHz, THD 0.05%) W434 x H171 x D414 mm 17.3 kg
*Equipped with a DAC (list price 72,000 yen) sold separately! PRIMARE's premain amplifier pursues simplicity. Achieves pure and clean sound quality with high power consumption while consuming ultra-low power. It is very practical with 3 high quality USB/TOS/RCA digital inputs. There are scuff marks and dirt marks on the exterior. Serial 302-1381 (Yonejima Satoshi)
Maintenance information: 2025.6.5 operation confirmed
Accessories: remote control, instruction manual, connection cord, power cord
Main specifications: output 80W x 2 (8Ω) 160W x 2 (4Ω) frequency characteristics 10Hz-20kHz input system/RCA x 4 system digital input/OPT/COAX/USB W430 x H106 x D380 mm 10 kg
Genuine Oba Shoji product. 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 the optional phono module is not installed, INPUT1 is at a normal line level. There are some scratches and dullness on the front panel (Oikawa Tetsuji)
Maintenance information: 2025.6.4 operation confirmed
Accessories: remote control, 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 contact system has been thoroughly maintained! A pre-main amplifier that can operate 4 channels simultaneously. The mixing function and channel settings for the 3 microphone inputs can be individually controlled, and the volume of each channel can be individually controlled. The exterior has small scratches and paint peeling on the corner of the front panel top plate (Oikawa Tetsuji)
Maintenance information: 2025.5.14 Maintained (output relay replaced. INPUT selector disassembly contact polishing. Repair anything else that can be disassembled by disassembling it. Since the main volume is special, it cannot be disassembled and the contacts are cleaned. (The panel lamp on this unit has been modified and the white LED is attached, but leave it as it is)
Accessories: none
Main specifications: 4 channel premain amplifier, 2 CH operation, 100 W x 2 (20 Hz to 20 kHz, 8 Ω), 4 CH operation, 50 W x 4 (20 Hz to 20 kHz, 8 ohms), W474 x H150 x D370 mm, 15.5 kg
It has been maintained with selector contacts disassembled and polished, relays replaced with new ones, etc. ONKYO middle class premain amplifier. The characters are delicate and unobtrusive and can handle any music genre flawlessly. It has good performance for introductory subsystems. There are many signs of use on the exterior, such as small scratches. *There is a slight deviation in the scale due to replacement with a balance VR replacement. Serial 6411010658 (Murakoshi Yoichi)
Maintenance information: 2025.6.4 maintained (INPUT selector, REC selector, Cartrich selector, and PASS selector disassembly contacts polishing and cleaning grease application, balance VR replacement, speaker relay replacement, front panel chassis sheet metal correction)
Accessories: instruction manual (copy)
Main specifications: 105W+105W (8Ω) PHONO (MM, MC compatible) W445 x H172 x D434 mm 17.0 kg
Maintained! A pre-main amplifier manufactured for high power and high quality. The sound is very loud and the thick tone is attractive. * Even at zero volume, there is slight G-noise from LCH, but this is a product specification (there is a written document by the manufacturer engineer at the time), but the noise disappears when the main direct switch is turned on. The exterior is dull (Daiki Goto)
Maintenance information: 2025.5.14 Maintained (disassembly repair contact polishing due to contact damage in the slide volume, switch disassembly contact polishing. Bad output relay contact replacement. (This unit emits residual noise even when the volume is reduced, but this is a product specification)
Accessories: A letter by the manufacturer's engineer (it mentions residual noise due to the use of A-7 products)
Main specifications: 120W+120W (8Ω) dimensions W435 x H133 x D365 mm weight 10.3 kg
* Since the top plate is in poor condition due to stains, paint peeling, etc., it is cheap and sold as is. A mid-range premain amplifier using the new UHC-MOS. Compared to the previous model PMA-1500AE, which had a flat sound, the sense of resolution and sound image localization have been improved. The high signal-to-noise level, which is compatible with the latest sound sources, shines. In addition to the exterior, as described above, you can see a feeling of use such as dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.6.3 operation confirmed
Accessories: remote control, copy of instruction manual, power cord (external product)
Main specifications: output 70W+70W (8Ω) PHONO (MM/ MC) built-in frequency characteristics 5Hz to 100kHz W434 x H135 x D414 mm 16.1 kg
6000 series current model. It is equipped with a D/A converter and analog output circuit equivalent to the company's CD player CD6007. It is compatible with PCM signals of up to 192 kHz/24 bit, and it is also possible to play back high-resolution sound sources. You can enjoy the clear sound typical of Marantz. The exterior is in good condition with no scratches (Ryo Mizusaki)
Maintenance information: 2025.6.4 operation confirmed
Accessories: remote control, instruction manual, power cord
Main specifications: rated output 45W+45W (4, 8 ohms) W440 × H105 × D370 mm 7.6 kg
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. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2025.5.31 Operation confirmed
Accessories: remote control, instruction manual, power cord
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
The price has been reduced! 2025/5/16 sales price 59,800 yen Mid-range premain amplifier using the new UHC-MOS. Compared to the previous model PMA-1500AE, which had a flat sound, the sense of resolution and sound image localization have been improved. The high signal-to-noise level, which is compatible with the latest sound sources, shines. There are some threads on the exterior. Serial 5081504216 (Fujisawa Yukishi)
Maintenance information: 2025.5.16 Operation confirmed
Accessories: remote control, instruction manual, power cord
Main specifications: output 70W+70W (8Ω) PHONO (MM/ MC) built-in frequency characteristics 5Hz to 100kHz W434 x H135 x D414 mm 16.1 kg
Maintained in September 2022. A hit model during the heyday of audio by Sony. It has a relaxed, thick tone that you won't get tired of listening to, and it faithfully expresses the sauce without unnecessary seasoning. Although it is an entry class, the spacious sound quality unique to the 80s is attractive. As for the exterior, there are small scratches on the top plate and side wood. Serial 214652 (Fujisawa Yukishi)
Maintenance information: 2025.5.26 operation confirmed
2022.9.11 Maintained (volume VR, balance VR with gap, replacement of 10 locations due to 100Ω 470Ω deterioration of resistance in other boards, other INPUT switches, cartridge LOAD switches, SPEAKERS switches, polishing and cleaning grease application for each disassembly contact, DC bias DC balance adjustment, sound output confirmation test for each input/output terminal)
Accessories: No accessories
Main specifications: 105W+105W (8Ω) PHONO MM/MC (40Ω/3Ω) W430 × H161 × D436 mm 19.6 kg
The price has been reduced. 2025/5/14 sales price 99,800 yen ROTEL's RA-1520S pre-main amplifier is highly regarded in Europe. This is a special edition with upgraded wiring materials from the original model. The natural sound characters with no habits unique to the company and the mid and low frequencies, which have more power than output, are attractive. There are some small scratches such as VOL. Serial 867-6441065 (Takasaki Atsushi)
Maintenance information: 2025.5.13 Operation confirmed
Accessories: remote control, instruction manual, power cord
Main specifications: output 75W+75W (6Ω) W431 × H99 × D358 mm 8.7 kg
All panel switches and volumes have been maintained, including disassembly and contact polishing! You can use it comfortably. The famous aircraft of yesteryear has been revived. It is an amplifier that can be switched between A/B classes, so you can enjoy it according to your preferences. The clear, edgy sound is exhilarating (Daiki Goto)
Maintenance information: 2025.5.25 Maintained (all panel switches and volumes disassembled and polished. Replacing deteriorated transistors in the equalizer circuit. Transistors such as other preamp circuits, tone control circuits, and power supply circuits have been replaced due to previous repairs. I/O pin jack polish. Electric circuit DC adjustment, idling current adjustment.)
Accessories: copy of the manual
Main specifications: 15W+15W (A grade/8Ω) 75W+75W (B-grade/8Ω) W436 x H144 x D323 mm 15.5 kg
Panel switches have been carefully maintained, such as disassembling, contact polishing, etc.! ONKYO premain amplifier with high cost performance. A non-feedback power amplifier is used, and the power supply transformer is of high quality and is carefully crafted. The power amplifier direct position allows direct input to the power amplifier via volume only. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.5.25 Maintained (panel switch disassembly contact polishing. Disassemble and clean the rear panel, etc. (I/O pin jack polish)
Accessories: none
Main specifications: 100W+100W (8Ω) PHONO input 1 system (MM/ MC switching) W445 x H165 x D434 mm 18.0 kg
*Currently sold. An audio manufacturer based in London that was founded in 1986. It is a pre-main amplifier that is necessary and sufficient for general music fans to enjoy CDs, and it is a pre-main amplifier that allows them to experience British sound, knowing all about the essence of music. Line scratches and insulator marks remain behind the top plate. Serial KWC1102270520040 (Fujisawa Yukishi)
Maintenance information: 2025.5.25 Operation confirmed
Accessories: instruction manual
Main specifications: maximum output 25W x 2 (8Ω) input system/unbalanced RCA x 4 systems, diameter 3.5mm stereo mini jack x 1 system W430 x H80 x D340 mm weight 5.1 kg
Maintained! A late model in the popular classic 607 series. The resolution is high, the outline is clear, and matches well with modern speakers. You can experience the powerful mid to low range in this price range. You can see a feeling of use on the exterior, such as dullness and peeling side wood (Takahashi Nobuyuki)
Maintenance information: 2025.5.22 maintained (master volume dismantling cleaning output relay replacement protector circuit part capacitor 2 replacement switch disassembly polishing (input selector, power amplifier direct, source direct, reck-out, tape) push switch disassembly and polishing (tone, subsonic, loudness, processor, muting, MM/MC switching) solder repair volume cleaning Internal inspection, cleaning, DC adjustment, operation confirmation
Accessories: copy of instruction manual
Main specifications: 105W+105W (6Ω) 90W+90W (8Ω) phono MM/ MC switching W430 x H162 x D452 mm 18 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
The price has been reduced. 2024/4/2 sales price 79,800 yen Maintained! Pre-main amplifier with built-in DA converter. An amplifier that allows you to enjoy a gentle, expansive sound like Denon with analog input, and sound quality with a wide range with digital input. It is an amplifier that can also be recommended as an amplifier to be combined with PC audio (Daiki Goto)
Maintenance information: 2024.2.21 maintained (function, recout, digital input, speaker, tape, loudness switch disassembly, polishing grease application, output relay replacement, bus volume replacement, solder repair, various volumes, switch cleaning, interior and exterior inspection and cleaning, digital input/output confirmation, operation confirmation. (*Since the bus volume is similar, the bus lifts slightly when the source is directly off)
Accessories: none
Main specifications: 110W+110W (8Ω) phono (MM/MC switching) 5 digital input systems (coaxial x 3/optical x 2) W434 x H180 x D420 mm 18 kg released in 1989 (Kojima Yosuke)
The price has been drastically reduced. 2025/4/20 sales price 99,800 yen ※ Equipped with a MM/MC compatible phono board P100 (currently set to MM) It has a sense of power that cannot be imagined from a compact frame, and I also feel the flexibility and responsiveness. This is one that you can enjoy regardless of genre. There are no visible scratches on the exterior, etc., and it is good with just the degree of dullness. Serial 179670*There seems to be a sound leak when the volume is narrowed down on an efficient speaker, but this is a specification (Murakoshi Yoichi)
Maintenance information: 2025.4.20 sound output confirmed
Accessories: remote control, instruction manual, power cable
Main specifications: rated output 100W/8Ω, 140W/4Ω, compatible impedance 8Ω/4Ω, playback frequency band, 5Hz-100kHz, 5 analog input systems, 2 analog output systems, W440 x H90 x D255 mm, 11.0 kg