* Source Direct SW cover is missing and cannot be used, so it is cheap (it is off). Maintained by the manufacturer! 4th generation of the DENON 2000 series. It is an amplifier that can be enjoyed regardless of the genre of music, with its plump, loud mid and low frequencies, and a pleasant, sharp tone. Scratches, dullness, stains, and a feeling of use can be seen on the exterior and front edge (Kobayashi Hitoshi)
Maintenance information: 2024.4.20 maintenance completed (select switch disassembly contact polishing grease applied, direct idling adjustment to the side where SD switch tone can be controlled (using repair auxiliary parts) operation tested)
Accessories: copy of instruction manual
Main specifications: High-rigidity 6-block, separated chassis, power amplifier, direct input, bi-wiring compatible, 80W+80W, W434 x H180 x D478 mm, 23.5 kg
Maintained! A pre-main amplifier that allows you to enjoy the glossy and thick sound typical of Sansui. What is noteworthy is the mid-low range, and the bass line, which clearly reveals the outline, is an appeal unique to the KX series during this period. The exterior is dull and has a feeling of use (Hiura Katsuji)
Maintenance information: 2024.4.20 maintenance (output relay replacement, power amplifier circuit resistance replacement, power supply circuit capacitor replacement, tape selector, etc., switch disassembly, polishing grease application (input selector, power amplifier direct, source direct, reck-out, tone, loudness, muting switch), various volumes, switch cleaning, solder main part repair, pin jack polishing, interior and exterior inspection, cleaning, operation confirm)
Accessories: copy of instruction manual
Main specifications: 90W+90W (8Ω) phono mm/MC compatible dimensions W430 x H161 x D446 mm weight 18.0 kg
Maintained! 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 and has a feeling of use (Hiura Katsuji)
Maintenance information: 2024.4.20 maintenance (main amplifier circuit transistor, adjustment volume exchange, output relay, headphone relay replacement, power supply circuit transistor replacement, input selector, etc., and application of polishing grease (power amplifier direct, source direct, reck-out, tape, loudness, subsonic, muting, processor switch), various volume cleaning, soldering (Repair, DC, bias adjustment, internal inspection and cleaning, operation confirmation)
Accessories: instruction manual
Main specifications: Equipped with HYPERα-X balance circuit, effective output 190 w+190 w dimensions W466 x H163 x D452 mm, weight 33 kg
Maintained! The PRA-2000ZR is a control amplifier specializing in records, which has a reputation for phono circuits. The sharp sound quality of the MC is attractive. It is an MC2 system/MM1 system, and PHONO1 incorporates a pure focus MC transformer and PHONO2 incorporates a FET configuration head amplifier. The exterior has dullness and small scratches. Serial 6101100050 (Hiroki Aso)
Maintenance information: 2024.4.22 maintained (equalizer board repair, transistor replacement, 24V regulator replacement, solder repair, each volume switch cleaning, internal inspection, cleaning, each input/output confirmation, operation inspection tone, there is a popping sound when SW is on and off, but there is no sound interruption, etc.)
Accessories: copy of instruction manual
Main specifications: PHONO3 system (PHONO1/MC PHONO2/MC PHONO3/mm) real-time tone control equalizer amplifier part dimensions W462 x H145 x D385 mm weight 10.6 kg
Maintained. An attractive pre-main amplifier with a thick sound that is a bit different from the current Lux. It is a high performance amplifier equipped with a Plus-X power supply with ample stabilization control and a phono straight function. It is a model that is compatible with MM/MC and is easy to use. There is a feeling of use on the cabinet, such as scratches and chipped veneers. Serial A2503701 (Mizushima Itsuro)
Maintenance information: 2024.4.4 maintenance completed (disassemble all lever switches, polish contacts, apply contact cleaner, replace defective output relay contacts, replace power lamp, polish input/output pin jacks)
Accessories: copy of instruction manual
Main specifications: 80W+80W (8Ω) W464 x H156 x D332 mm 11 kg
The price has been drastically reduced. 2024/4/11 sale price 59,800 yen Aura line exclusive premain amplifier. A slim premain amplifier with a premium chrome finish. You can imagine it from a clean face. It has a silky tone and goes well with European speakers. There is a slight feeling of use, such as a missing screw in the center of the back, scratches on the top plate, etc., and some lettering disappeared (Murakoshi Yoichi)
Maintenance information: 2024.4.10 sound output confirmed
Accessories: power cord, copy of instruction manual
Main specifications: 6 input systems with TAPE OUT 45W+45W (8Ω) Dimensions W430 x H62 x D310 mm Weight 5.0 kg
Maintained by Denon! This is DENON's mid-range model, and is a staple machine with an excellent sense of stability, with firm bass and delicate high frequencies. In addition to the bass energy from conventional models, you can enjoy well-balanced sound that takes into account the high mid to high frequencies with a high sense of transparency. There are small scratches on the exterior. Serial 8061507480 (Tamura Eiji)
Maintenance information: 2024.4.17 manufacturer maintained (Rch amplifier circuit, transistor and resistor replacement. Amplifier board soldering correction (both channels). (Idle current adjustment and operation inspection carried out.)
Accessories: instruction manual, power cable, original box
Main specifications: rated output 80W+80W (8Ω) PHONO1 system (MM/MC switching) dimensions W434 x H181 x D480 mm weight 24.0 kg
The price has been drastically reduced. 2024/4/16 Sales price 118,000 yen Manufacturer maintained! Marantz pre-main made as an amplifier compatible with super audio. The sound, which makes you feel more relaxed and warm than recent models from the company, which have sharp looks, is attractive. The phono is also MM/MC compatible, so there are no omissions. Dullness, there is a small scratch on the top plate (Sasaki Shota)
Maintenance information: 2024.4.16 manufacturer maintained (SP relay defect replacement, front VR main relay nuclear circuit Iida defect correction implementation, other operation inspections)
Accessories: manual, power cable, remote control
Main specifications: 100W+100W (8Ω) Playback frequency band: 5Hz to 100kHz Analog input: 7 systems Analog output: 2 systems Dimensions W458 x H166 x D464 mm Weight 23.0 kg
Maintained by the manufacturer! 4th generation of the DENON 2000 series. It is an amplifier that can be enjoyed regardless of the genre of music, with its plump, loud mid and low frequencies, and a pleasant, sharp tone. The exterior has dents in the upper right corner of the front, light line scratches in the lower left corner, and dullness throughout (Kanai Hidetsugu)
Maintenance information: 2024.4/18 manufacturer maintenance (disassembling the switch, polishing the contact, grease coating, idling adjustment, operation test)
Accessories: instruction manual, power cord
Main specifications: High-rigidity 6-block, separated chassis, power amplifier, direct input, bi-wiring compatible, 80W+80W, W434 x H180 x D478 mm, 23.5 kg
The price has been reduced! 2024/4/13 sales price 69,800 yen ※It is cheap because it has a tobacco smell. It is a premain amplifier with a built-in USB DAC compatible with a maximum DSD of 11.2 MHz and PCM384 kHz/32 bit input. Adopts a dual monaural configuration/fully balanced circuit design that inherits the design philosophy of the UD-503. This one is enough, and it's a convenient dish. There are small scratches on the exterior. Serial 1710182 (Tamura Eiji)
Maintenance information: 2024.4.13 operation confirmed
Accessories: remote control, power cable
Main specifications: 20W+20W (8Ω) impedance 4Ω to 8Ω frequency characteristics 10Hz to 100kHz W290 x J81.2 x D264 mm mass 3.7 kg
The disposal price has been reduced. Member discounts are not applicable. 2024/4/9 sales price 138,000 yen ※It is cheap because the condition is not good. Next-generation model of the L-550, a famous pure Class A amplifier that has been maintained by the manufacturer (*PHONO1 cannot be used due to a broken equalizer board). The very smooth, deafening warm color sound perfectly matches the delicate sound quality of pure A grade. It also has a reputation for analog sound, and thick sound quality can be obtained with both MM/MC. There is a feeling of use due to appearance, dullness, abrasions, scratches, paint deterioration, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.4.9 manufacturer maintenance completed (equalizer selector switch disassembly cleaning, correction due to broken equalizer board, other contact cleaning, general adjustment*PHONO1 cannot be used due to broken equalizer board)
Accessories: copy of instruction manual
Main specifications: pure A grade 50W+50W (8Ω) PHONO (MM/MC) PHONO/CD straight circuit system W453 x H174 x D470 mm weight 20 kg
Full maintenance from capacitor replacement to re-soldering of each board, etc.! The first memorable luxury model in the Sansui 07 series in the era when there was no 907. Starting with the newly developed dual FET at the time, the company's consistent commitment to adopting quadruple detent volumes and large electric power transformers independently on the left and right has already been established. Compared to models from the 80s and 90s, the sense of fulfillment in the phono section is amazing. There is a feeling of use due to appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.4.16 Maintained (capacitor, semi-fixed resistor, transistor, resistor, protection relay SP terminal, heat dissipation sheet replacement. SW type terminal cleaning, contact grease coating. Re-solder flux cleaning for each board. Each circuit adjustment, RCA terminals, interior and exterior cleaning. (Various tests)
Accessories: copy of instruction manual
Main specifications: 85W+85W W430 x H168 x D389 mm 16.8 kg
The price has been drastically reduced. 2023/12/29 sales price 59,800 yen Marantz middle class premain amplifier. It excels in the extension and subtlety of the treble, and the thickness of the mid-range sound has been added to make the sound quality satisfying to listen to. It's versatile and easy to use regardless of music genre. There is a feeling of use such as dirt on the top plate. Serial 15001620002441 (Takasaki Atsushi)
Maintenance information: 2023.12.29 Operation confirmed
Accessories: remote control, manual, power cord
Main specifications: rated output 70W x 2 (8Ω), 100W x 2 (4Ω) frequency characteristics 5Hz to 100kHz W440 x H128 x D379 mm 12 kg
The price has been reduced! 2024/4/13 sales price 35,000 yen Maintained! A premain amplifier with an impressive warm color sound while keeping the clear, easy-to-see sound typical of ONKYO. Recommended for classical music, female vocals, etc. There are dullness over time, scratches, etc. (Daiki Goto)
Maintenance information: 2023.10.17 Maintained (maintenance contents/tone, reck-out, MM/MC switch disassembly, polishing grease application, main amplifier part solder repair, output relay replacement, volume, switch cleaning, pin jack polishing, input/output confirmation, operation confirmation. (Even after tone SW decomposition and polishing treatment, a small pop sound is made when turned on and off, but there are no interruptions in the sound.)
Accessories: copy of instruction manual
Main specifications: W435 x H164 x D434 mm 14.9 kg