The price has been reduced! 2025/4/20 sales price 138,000 yen The interior has been thoroughly reviewed, and deteriorated parts such as the volume and selector have been dismantled and polished, and deteriorated parts such as 10 diodes, 18 resistors, 8 transistors, and 7 capacitors have been replaced! Yamaha's famous C-2a. The transparency and three-dimensional effect of the sound have been brilliantly revived. I recommend this one for those who like natural, crisp sound in the mid to high range with good texture. The sound of the PHONO input is good, so it is a popular amplifier for analog fans. The exterior has a feeling of use such as dullness and scratches. Serial 02657 (Takahashi Nobuyuki)
Maintenance information: 2025.4.20 Maintained (panel lever switch and volume disassembly contact polishing. Replace the tone control circuit equalizer circuit, 10 varistor diodes in the power supply circuit, 8 transistors, 18 metal film resistors, and 7 capacitors. (I/O pin jack polish)
Accessories: copy of instruction manual
Main specifications: PHONO input 2 systems W435 x H72 x D320 mm 7.9 kg
2024 maintenance completed! A popular preamp sold during the heyday of analog. The mid-range is more glossy and has a sexier vibe than the one after C29. That rich sound can truly be said to be a preamp representing the golden age of McKinn. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.4.19 maintenance (each SW, VOL cleaning, pin jack cleaning, lamp deterioration replacement, panel peeling correction, pin jack caulking, additional block capacitor installation, shield cable earth solder treatment, operation check)
Accessories: copy of instruction manual
Main specifications: input terminals, RCA4, PHONO input, 2 pre-out systems, W430 x H140 x D365 mm, 13.8 kg
*There is an unevenness in the display, which is the current situation. Genuine Rin Japan. AV processor. The video relationship has not been checked, but the 2CH sound output has been confirmed. You can organize your audio system with so many input terminals. On the exterior, the power button is scratched and dull. Serial 1097816 (Yonejima Satoshi)
Maintenance information: 2025.6.4 operation confirmed (video unchecked)
Accessories: remote control, instruction manual, power cord
Main specifications: video terminal (composite input x 4 composite output x 1 S input x 2) audio terminal (coaxial digital input x 3 optical input x 4 analog input x 12) W381 x D368 x H80 mm weight 5 kg
Maintained! A 70's Japanese preamp that makes you feel the intensity of color unique to vintage. The horizontally arranged dials are cool, and the atmospheric appearance is also a design unique to this era. It makes me enjoy playing records with its strong sitting sound. On the exterior, bumps and rust spots are conspicuous. Serial 110585 (Yonejima Satoshi)
Maintenance information: 2025.5.29 Maintained (relay, capacitor, and transistor replaced due to pre-out circuit output relay circuit failure. IC replacement and capacitor replacement due to defective headphone circuit and headphone amplifier ICs. (*Since headphone relays are no longer available, they are directly connected to the signal line, so please remove the headphones from your ears when the power is turned on and off.) 2024.8.22 Maintained (rubber feet attached. Power cord replacement. Tone, filter, equalizer circuit transistor, and capacitor replacement. Solder repair. Clean each volume and switch. Other interior and exterior inspection and cleaning, pin jack polishing, input/output confirmation, operation inspection.)
Accessories: none
Main specifications: 4 volume-line inputs with 21 point clicks, 5 phono inputs, 2 systems, SNR 103db, W410 x H152 x D271 mm, 8 kg
The price has been drastically reduced! 2025/6/1 sales price 398,000 yen This is a mid-range model with greatly improved distortion characteristics and S/N performance mounted on the C-900U top-end model. It was developed with the concept of a high quality control amplifier dedicated exclusively to line levels in mind. The exterior is dull. Serial G 40900024 (Fujisawa Yukishi)
Maintenance information: 2025.6.1 operation confirmed
Accessories: remote control, instruction manual, power cord, original box
Main specifications: 5 unbalanced input systems, 2 balanced systems, 2 unbalanced output systems, balanced 2 system dimensions W440 x H130 x D430 mm, weight 14.6 kg
The price has been drastically reduced. 2025/5/9 sales price 238,000 yen Maintained! Macintosh's 2nd generation solid state preamp. Although it is a transistor, it inherits the atmosphere of a Macintosh vacuum tube sound. The rich and vivid sound unique to McKinn from this era is attractive. Serial 43P88 (Murakoshi Yoichi)
Maintenance information: 2025.5.8 maintained (each SW cleaning, lamp replacement, pin jack cleaning, 6 phono stage TR6 replacement. (Partial correction of panel peeling)
Accessories: instruction manual (copy)
Main specifications: input/LINE2 system TAPE2 system PHONO (MM) 2 system output/PRE OUT2 system W445 x H180 x D350 (including pan lock) mm approx. 11 kg
The price has been reduced. 2025/5/30 sales price 118,000 yen Maintained! This is QUAD's first transistor preamp. The luscious, shaded tone is British sound itself. If it's royal, I recommend combining it with the company's 303 power amplifier. There is a feeling of use over time (Daiki Goto)
Maintenance information: 2025.5.28 Maintained (power supply and C all NG in PHONO/LINE board → replacement. Replace TONE/filter VOL because fixed VOL cannot be fixed. Other SW cleaning.)
Accessories: copy of manual, power cable, connection cable
Main specifications: Phono 1 system, 3 line systems, W260 x H92 x D165 mm, 3 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/5/25 sales price 118,000 yen A total of 21 capacitors, such as power supply capacitors, PHONO/LINE coupling capacitors, etc. have been replaced and maintained. This is the first quad transistor preamp. The compact size and strong sound that resonates well is an attractive item that allows you to fully enjoy classical music. The volume is also not graded and can be adjusted in detail. You can enjoy better European sound when used in conjunction with the company's 303 and 405 power amplifiers. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.5.23 maintenance completed (C in power supply, coupling C in PHONO/LINE total 21 replaced, ACSW spark killer replaced. Each SW, VOL cleaning) 2015.1.25 maintained (deteriorated capacitor replacement, selector switch contact cleaning. (Input/output DIN terminal pin replacement)
Accessories: copy of instruction manual, connection cable, power cable
Main specifications: Phono 1 system, 3 line systems, W260 x H92 x D165 mm, 3 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/5/16 sales price 128,000 yen Maintained! It has an elegant and glossy tone, and although combinations with 405 are common, 606 etc. are also a good match. It has the natural texture of the acoustic sauce and the smooth tone that feels good against the skin. The exterior is in good condition, with minor scratches and dullness, and paint peeling on the right side. Serial 24151 (Yamato Yuki)
Maintenance information: 2024.4.12 maintenance (main board ground point screw reprocessing, operation check) 2024.1.17 maintenance (replacement of coupling C, bypass C, etc. in each board, AC SW spark killer C replacement, INPUT switching analog SW through hole pattern re-soldering, power SW internal contact polishing ~ operation check)
2020.6.13 Maintained (balance VR, SW disassembly cleaning. Attach 1 kΩ resistors to both the left and right sides of the flat board. Replaced due to faulty IC. All flat and mother boards have been soldered again. (Check the input/output waveform, check the left and right balance, and perform a comprehensive operation test by connecting the power amplifier to confirm normal operation.)
Accessories: copy of the power cord instruction manual
Main specifications: 2 LINE inputs, 1 PHONO input, 1 phono sensitivity, 1m/3m/10mV switching, W321 x H103 x D203 mm, 4.0 kg
The price has been reduced! 2025/4/14 sales price 68,800 yen Maintained! A stereo premain amplifier developed by inheriting CA-1000 technology. It is an amplifier that can evaluate pure sound quality without habit. The straight tone and glossy high frequencies give an impression. Even though it's an old model, it doesn't feel that the range is narrow, and it goes perfectly with rock, jazz, drums, and wind music. The exterior has a feeling of use such as dullness and scratches. Serial 2922 (Tamai Jun)
Maintenance information: 2025.4.14 maintained (TONE, loudness, main volume disassembly contact polishing, input/output pin jack polish)
2024.3.10 Maintained (speaker terminal replacement, power cord replacement, power supply circuit, tone control circuit, main amplifier circuit, etc., deterioration resistance, transistor exchange switch and volume type, contact disassembly, polishing, input/output pin jack polish ※ The circuit is not stable immediately after turning on the power, so when the filter or tone switch is switched, it makes a crackling sound. (If you wait a little while, it won't bother you)
Accessories: none
Main specifications: output 45W+45W (8Ω, Class B operation) 10W+10W (8Ω, Class A operation) 20Hz-20kHz power consumption rating 190W maximum 300W external dimensions 436 x H144 x D323 mm weight 13.5 kg
Maintained including main volume replacement! The 306 series was supported as a pure audio entry model. There are plenty of phono circuits, MM/MC compatible, and impedance can be adjusted. Clear, high quality sound quality with W super servo system. I feel that the sound quality, which has a slight core, is good in this era. The exterior has blows, scratches, etc. (Sato Wataru)
Maintenance information: 2025.5.11 Maintained (master volume replacement. Volume dismantling and cleaning (balance, treble, bass) subsonic, phono cartridge, reck-out, mode, muting, phono switching, tuner/AUX changeover switch disassembly and polishing. Indicator lamp replacement. Solder repair. Interior and exterior inspection and cleaning, pin jack polishing. Operation check)
Accessories: No accessories
Main specifications: PHONO (MM/MC) 2 system frequency characteristics 0.8 Hz to 170 kHz dimensions W480 x H100 x D403 mm weight 10.5 kg
Maintained! A popular preamp sold during the heyday of analog. The mid-range is more glossy and has a sexier vibe than those after C29. That rich sound can truly be said to be a preamp representing the golden age of Mackins'. There is rust on the top plate (Sasaki Shota)
Maintenance information: 2025.5.18 maintained (each SW, VOL cleaning, lamp deterioration replacement, in-board capacitor deterioration replacement, shield cable terminal solder treatment, pin jack ground partial plating line treatment, main VOL defect replacement, push button TAPE 1, 2 dismantling and cleaning, TAPE not coming out → wiring defect correction)
Accessories: copy of the manual
Main specifications: 4 input terminals, 4 PHONO input systems, 2 pre-out systems, W430 x H140 x D365 mm, 13.8 kg
The price has been reduced. 2025/4/8 sales price 49,800 yen 2022.11 maintenance completed. A preamplifier equipped with a simple design and function, and full control functions, such as independent left and right gain adjustments, and impedance selectors for various cartridges. The clear sound without habit is a product preferred by multi-system owners. Each load capacity can be set to 6 types depending on the cartridge load, and the volume uses a 32-step attenuator type with silver-printed contacts. You can see a feeling of use such as appearance, dullness, small scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2022.11.24 maintenance (PHONO circuit transistor replacement, panel lever switch disassembly contact polishing, contact cleaner application.)
Accessories: none
Main specifications: differential 2-stage current mirror amplifier A grade SEPP power consumption 10W dimensions W420 x H81 x D357 mm weight 6.3 kg
Disposal price has been reduced (member price not applicable) 2025/3/22 sales price 118,000 yen remote control is out of stock. QUAD 99 preamp. Genuine Rocky The QUAD-like design keeps the speaker playing with plenty of atmosphere. It also has sharpness and transparency in the mid to high range, creating a solid effect. The size is also compact and easy to use. The exterior is dull and has threads. Serial 99PG0198 (Tomonori Asaine)
Maintenance information: 2025.3.22 operation confirmed
Accessories: power cord connection cord
Main specifications: input LINE 3 system PHONE 1 system TAPE1 system with PHONO (MM/MC) W321 x H70 x D310 mm weight 4.42 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/3/12 sales price 59,800 yen Maintenance completed! Built-in head amplifier composed of 6 FETs. A famous amplifier that doesn't have a strong personality, but it has natural sound quality and is easy to hear. You can see the exterior, rust, dullness, abrasions, etc., and a feeling of use. Serial 15203056 (Kobayashi Hitoshi)
Maintenance information: 2025.3.12 maintenance completed (balance volume replacement treble, bus volume dismantling and cleaning ③ switch dismantling and polishing grease application (phono selector, imp selector, rec selector, muting, subsonic, tape monitor, mode, tape 23) ④ flat amplifier, power supply capacitor replacement ④ solder repair ⑤ leg installation ⑥ interior and exterior inspection cleaning, pin jack polishing, other volume cleaning, operation confirmation
Accessories: none
Main specifications: PHONO3 system (of which MC1 system) W480 x H111 x D342 mm 5.8 kg
The price has been reduced. 2025/5/3 sales price 118,000 yen Maintained! Yamaha's masterpiece preamp. It has a particularly good reputation for phono, and it is still a popular model among analog users. With a natural and highly transparent Yamaha sound, you can fully enjoy the appeal of acoustic instruments, such as the touch and feel of a piano, and the sharpness of guitar strings. Stains and dullness are conspicuous on the top plate. Serial 12672 (Murakoshi Yoichi)
Maintenance information: 2025.5.2 Maintained (reduction treatment and cleaning of poor contact parts with sulfide gas on all switches. (All input/output terminal function tests) 2024.10.6 maintained (Ethanol cleaning and oxidation prevention treatment are performed after injecting a reducing agent to remove the oxide coating on all rotary switches and lever switches. (After disassembling the 6 consecutive volume and balance volume, clean the carbon surface and brush surface, then apply anti-oxidation treatment)
Accessories: copy of instruction manual
Main specifications: PHONO x 3 system (MM/ MC) MC head amplifier built-in W435 x H72 x D320 mm 7.9 kg
Maintained in 2024/6. This is a compact, space-saving quad preamp 34. It has a supple and delicate expressive power that is not inferior to the 44, which is a higher-level model. The supple, uncharacteristic character goes well with vacuum tube power amplifiers. There is a feeling of use such as scuffs scattered on the top plate. Serial Q041639 (Takasaki Atsushi)
Maintenance information: 2024.6.29 maintenance completed (AC line spark killer NG → replacement, mainboard coupling C, bypass C, etc., operation check)
Accessories: copy of manual, power cord
Main specifications: PHONO (MM compatible) module switchable type W321 x H64 x D207 mm 3.2 kg
The price has been drastically reduced! 2025/5/3 sales price 128,000 yen Maintained! Late QUAD44 with CD input terminal. It's not flashy, but the thick, glossy tone is attractive. In particular, it softens female vocals. There is a feeling of use on the exterior, such as dullness and small scratches. Serial Q031658 (Fujisawa Yukishi)
Maintenance information: 2025.5.3 maintained (power supply SW contact cleaning/correction, IC all replacement, symptoms occurred even after check, push buttons, input selector board replaced)
2023.10.22 Maintained (Acre sectorable terminal caulking defect? → soldering. Balance Vol, Filter Vol, SW Cleaning AC spark killer NG, internal in-board bypass C, coupling C replacement)
Accessories: copy of instruction manual, power cord
Main specifications: 2 LINE inputs, 1 PHONO input, 1 phono sensitivity, 1m/3m/10mV switching, W321×H103×D203 mm
The price has been drastically reduced. 2025/3/2 sales price 69,800 yen*Inexpensive because the remote control is missing, has many scratches, and is in poor condition. A control amplifier designed by the British Aura. The clear sound with a sense of transparency can be enjoyed not only with recent digital sound sources, but also with analog ones. There are scuffs scattered on the top surface, front panel, and knobs, and the text print has disappeared. Serial A4000343 (Takasaki Atsushi)
Maintenance information: 2025.3.2 operation confirmed
Accessories: power cord
Main specifications: input PHONO (LINE1) 1 system+LINE (LINE2-8) 7 system tape input/output 2 system output RCA2 system XLR1 system W430 x H62 x D340 mm 5 kg
Maintained! Genuine Electri Macintosh's classic preamp. It reproduces bright, glossy tones with clear mid-range sounds. This model should be used by music fans who enjoy all kinds of sources. The fact that it has a full range of functions, such as a 5-band equalizer and a 7-source input selector, is also attractive. On the exterior, there are parts where oxidation, partial peeling, and light is leaking out. Serial JEB8913 (Fujisawa Yukishi)
Maintenance information: 2024.6.15 Maintained (MODE switch disassembly contact polishing contact grease application, installation fixed. Push switch disassembly contact cleaning contact grease application. Other volume contact cleaning. Electrolytic capacitor replacement, panel lamp replacement, panel peeling correction. (Check the operation of each input/output)
Accessories: copy of instruction manual
Main specifications: Equalizer up and down 12dB (center frequency/30Hz/150Hz/500Hz/1.5kHz/10kHz) rated output 20W+20W (8Ω) W445 x H192 x D395 mm 11.8 kg
The price has been reduced! 2025/4/5 sales price 118,000 yen From replacing 24 transistors, 11 capacitors, and 2 diodes, all switches and volumes were dismantled and polished, and the full restoration was completed! Yamaha's masterpiece C-2! It has a reputation for phono equalizers and is a popular model among analog users. You can fully enjoy the appeal of acoustic instruments such as the natural and highly transparent Yamaha sound, the touch of a piano, and guitar strings (Daiki Goto)
Maintenance information: 2025.4.5 Maintained (all panels have been polished for switches and volume disassembly contacts. Replace deteriorated transistors and capacitors in each circuit. Replace diodes and switches in the power supply circuit. (I/O pin jack polish)
Accessories: copy of the manual
Main specifications: PHONO x 3 system (MM/ MC) MC head amplifier built-in W435 x H72 x D320 mm 7.9 kg