Full maintenance has been completed, including replacement of deteriorated vacuum tubes and capacitors! The original MC275 is the pinnacle of Macintosh tube amplifiers. A famous historical machine that intensely entertains music with its velvety luster and strong tone. Instead of resolution or wide range, the rich sound that makes you feel a sense of life is truly the Macintosh sound itself. ※The hood is not included. On the exterior, transformer scratches, oxidation, etc. are conspicuous. (YONEJIMA Satoshi)
Maintenance information: 2025.9.9 maintained (vacuum tube KT88 and vacuum tube 12AZ7 deterioration replacement/oil capacitor 0.22 μf, etc., DC leak replacement, 6 DC leak replacement, 12 μF electrolytic capacitor, 12 μF domestic product replacement, block capacitor 100/30 μf deterioration replacement/AC cord deterioration exchange/resistance 2W, 1w,1/2 w deterioration replacement · 7 vacuum tube 12AX7 ham noise replacement/RCA jack deterioration replacement 2 pieces · vacuum tube socket caulking repair . Other operation checked (measured at 66 to 95 W SP: 8 Ω with rated output AC 100 to 117 V)
Accessories: No accessories
Main specifications: 75W+75W (in stereo) 150W (in mono) vacuum tube/12AX7 x 2, 12AX7 x 1, KT88 x 4, 12AU7 x 2, 12AT7 x 2 frequency band 16 Hz to 60 kHz input sensitivity 0.5 V input impedance 250 kΩ dimensions W311 x H203 x D438 mm weight 30.4 kg
Maintained! The Macintosh 7000 series stereo power amplifier was announced to coincide with the advent of the CD era. It seems to be the core model at the time, and it drives a large speaker with unique sweet and sticky sound quality, and the thick and gorgeous sound typical of the company is attractive. As for the exterior, there are some peeling and bumps. (TAMURA Eiji)
Maintenance information: 2025.9.3 Maintained (lamps, electrolytic capacitors, RCA jacks, urethane foam materials, etc., replaced due to defects and deterioration. Panel peeling correction (the back of the light guide plate and the area around the letters are not allowed) meter front fog disassembly cleaning, switch and volume cleaning, panel bracket installation correction, missing screws added. Bias and offset checks. Output audio check)
Accessories: No accessories
Main specifications: 270W+270W power guard circuit equipped with frequency characteristics 20 to 20 kHz damping factor 30 W 443 x H240 x D400 mm 37.2 kg
The price has been drastically reduced. 2025/9/4 sales price 548,000 yen Arrived for the first time in about 4 years! A popular late model! Maintenance has been completed, including replacement of 4 vacuum tubes and 7 capacitors! McKinn's tubular receiver preamp. The pre-section is such a powerful machine that it received the same evaluation as the C22. Sound characters unique to vintage McKinn, which are thick and have a strong luster, are attractive. You can enjoy the sticky, glossy tone. There is dullness over time, rust, etc. (Oikawa Tetsuji)
Maintenance information: 2025.9.4 maintained (12AX7, 6AU6, 6U8 replacement, 2 RCA jack deterioration replacements・4 resistors 1W noise exchange・4 resistors 1/2W defective replacement・2 short pins added・0.1 μF noise exchange・2 ceramic capacitors with 0.1 μF other deterioration replacement・3 electrolytic capacitors with 1 μF other deterioration replacement・block capacitor 50μF x 4 defective replacement/IFT coil disassembly repair ・IF/RF/MPX readjustment ・RCA jack and vacuum tube socket caulking repair*Other operation has been checked with AC 100 to 117 V)
Accessories: none
Main specifications: 117 V specification preamp input system PHONO1, 2, AUX, TAPE with FM tuner W395 x H120 x D305 mm 12.5 kg
The price has been drastically reduced. 2025/8/6 sales price 298,000 yen Maintenance has been completed, including 6 capacitors, 6 lamps, replacement, and volume disassembly and cleaning. While being clear and precise, this is a powerful machine that also has the thickness and intensity of sound of successive Macintosh control amplifiers. It is a famous machine with a deep sense of nostalgia that is compatible with both vintage and modern models. Using the familiar 5-band equalizer, it is also possible to change the desired tone depending on the song. Overall there is dullness (Oikawa Tetsuji)
Maintenance information: 2025.8.6 maintained (each SW, VOL cleaning (equalizer/OK, 1500 galliers cannot be completely removed) power supply condenser liquid leak → board cleaning, capacitor replacement, pin jack cleaning, panel clip correction, lamp switching replacement, operation check, disassembly contact refinement, protective grease application, operation confirmation with an oscilloscope)
Accessories: copy of instruction manual
Main specifications: built-in monitor amplifier with 5-band equalizer (20W x 2/8Ω), compatible with balanced input/output, PHONO (MM) compatible, W468 x H183 x D432 mm, 12 kg
The price has been drastically reduced. 2025/7/31 sales price 298,000 yen 6 lamps, 8 diodes, 4 capacitors have been replaced, each switch, volume disassembly, cleaning, etc. have been maintained! While being clear and precise, this is a powerful machine that also has the thickness and intensity of sound of successive Macintosh control amplifiers. It is a famous machine with a deep sense of nostalgia that is compatible with both vintage and modern models. Using the familiar 5-band equalizer, it is also possible to change the desired tone depending on the song*When turning the input selector and record selector, you may skip 1 time every 10 times. Since this part cannot be repaired, it is the current state (Oikawa Tetsuji)
Maintenance information: 2025.7.31 Maintained (5 balance/loudness coaxial VR and equalizer VR were refined, protective grease was applied, and operation was confirmed with an oscilloscope after assembly. Input selector sticks and doesn't move → dismantling and cleaning (sometimes one is skipped, but it's no longer compatible. (Switch structural problem) Power supply diode, capacitor failure, lamp failure → replacement, pin jack cleaning)
Accessories: none
Main specifications: built-in monitor amplifier with 5-band equalizer (20W x 2/8Ω), compatible with balanced input/output, PHONO (MM) compatible, W468 x H183 x D432 mm, 12 kg
The price has been drastically reduced. 2025/7/11 sales price 378,000 yen Transistors and capacitors have been replaced, etc. Maintenance has been completed! The flagship model of the Macintosh power amplifier at the time. The heavyweight frame, fresh blue meter, and large speakers drive lightly, and the rich, rich tone are just perfect. The clarity of low-frequency contours is the highest among all Mackins of all time. There is a feeling of use such as dullness and rust. Serial JCS2088 (Takasaki Atsushi)
Maintenance information: 2025.7.11 maintained (power stage Tr characteristic defect x 2, driver board C deterioration, meter, display lamp deterioration replacement, MODE switching SW dismantling and cleaning, each connector cleaning, transistor deterioration replacement in the driver board, operation check, meter dismantling terminal lead wire soldering treatment)
Accessories: copy of manual, power cord
Main specifications: 500W+500W (1000W when mono) equipped with power guard circuit W483 x D465 x H263 mm 60.3 kg
The price has been reduced. 2025/9/4 sales price 498,000 yen All 29 pieces, from block capacitors to couplings, have been replaced, and maintenance has been completed in every detail, such as disassembling and cleaning the main volume! Late C20 model. A well-balanced model with a high frequency that is easy to remove due to rectifier tube rectification and a thickness that makes you feel safe. Please play the rich, sweet, and deep tone of the mid-range on the horn speaker. Serial 234A9 (Yasuhito Koshihama)
Maintenance information: 2025.9.4 maintenance completed (main volume noise reduction measures → shaft ground reinforcement treatment · vacuum tube 6AQ8 installation → ECC83 replacement (2025.8.20 supply arrived) · AC cord instability exchange · block capacitor 40 μF x 2 ham noise exchange · block capacitor 1000 μF x 2 deterioration replacement · 5 defective electrolytic capacitors replaced · 8 μF or other defective electrolytic capacitors replaced · DC leakage and deterioration replacement of 0.47 μF and others 11 resistors, 1 W and 1/2 W deterioration replacements, 6 switching noise reduction measures → 1/4 W additional resistors, 2 additional resistors, vacuum tube socket and RCA jack caulking repair*Other operation checked with AC 100 to 117 V)
Accessories: copy of the manual
Main specifications: tubular phono 2 system phono equalizer curve variable use vacuum tube ECC83 x 5 ECC82 x 2 EZ90 x 1 W440 x H165 x D316 mm 8.7 kg
Maintained! Macintosh's first power amplifier with a balanced circuit configuration. Resolution and transparency have been increased while keeping the traditional rich tone of McKinn intact. The blue meter, which can be said to be synonymous, is alive and well, and it's visually pleasing. Late wide panel (Murakoshi Yoichi)
Maintenance information: 2025.9.4 maintenance completed (panel meter letter cleaning, panel peeling correction (partial correction not possible), power stage Tr check, pattern re-soldering, driver board C, meter illumination lamp, relay parts C, R replacement. Output transformer lead wire ground insulation treatment, power meter SW internal reinforcement)
Accessories: instruction manual (copy)
Main specifications: 300W+300W (2/4/8Ω), 600W during MONO (2/4/8Ω) W445 x H196 x D420 mm 35 kg
The price has been drastically reduced! 2025/9/1 sales price 258,000 yen All switches were disassembled and maintained, such as contact cleaning, etc. in 2025/5! Macintosh's classic preamp. It reproduces clear mid-range and glossy tones. This model should be used by music fans who enjoy all kinds of sources. The full range of functions, such as a 5-band equalizer and a 7-source input selector, is also attractive. There are small scratches and partial peeling on the exterior. Serial JEB8721 (Jun Tamai)
Maintenance information: 2025.5.14 maintained (RCA terminal solder fixed push switch, rotary switch, all switches disassembly contact cleaning contact grease coating main volume disassembly contact polishing cleaning conversion board creation replacement electrolytic capacitor replacement panel lamp replacement panel peeling correction each input/output operation check)
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 drastically reduced! 2025/8/23 sales price 258,000 yen Each volume type has been disassembled and maintained, such as contact cleaning, etc.! Macintosh's classic preamp. It reproduces clear mid-range and glossy tones. This model should be used by music fans who enjoy all kinds of sources. The full range of functions, such as a 5-band equalizer and a 7-source input selector, is also attractive. (SASAKI Shota)
Maintenance information: 2025.8.23 maintained (each SW/VOL cleaning, lamp replacement, auto on fuse switching, push button dismantling and cleaning, poor companion pot, LED x 1 off → replacement, pin jack cleaning. Assemble after refining each volume disassembly contact and applying protective grease. (Operation was confirmed with all oscilloscopes)
Accessories: copy of the 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 drastically reduced. 2025/8/21 sales price 398,000 yen Maintenance includes replacement of 42 parts such as gain volume, speaker terminals, lamps, transistors, capacitors, etc. The flagship model of the Macintosh power amplifier with a silver panel. It is characterized by its strong, dense sound. The extrusion is strong and goes great with JBL large monitor speakers. The dynamism in the mid to low range, which is difficult to obtain with current Mackin power amplifiers, is attractive. There are small scars and dullness over time (Oikawa Tetsuji)
Maintenance information: 2025.8.21 Maintained (GAIN Vol both channels replaced, Lch speaker terminal damaged replacement. Power stage TV x 4 is defective, short circuit is broken. Replace the meter and indicator lamp. C deterioration replacement in the board. TV deterioration replacement in the driver board. Connector crimping defect replacement. MODE SW dismantling cleaning. (Clean each connector, check operation)
Accessories: power cable, copy of instruction manual
Main specifications: 500W+500W (1000W when mono) equipped with power guard circuit W483 x D465 x H263 mm 60.3 kg
The price has been drastically reduced. 2025/6/28 sales price 258,000 yen Maintenance has been completed, such as glass panel peeling correction, input board capacitor replacement, etc. Macintosh's classic preamp. It reproduces clear mid-range and glossy tones. This model should be used by music fans who enjoy all kinds of sources. The full range of functions, such as a 5-band equalizer and a 7-source input selector, is also attractive. You can see a feeling of use on the exterior, dullness, rust, small scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.6.28 maintenance completed (each SW, VOL cleaning, lamp replacement, push button cleaning, pin jack cleaning, glass panel peeling correction, input board capacitor replacement, fuse replacement, operation check of each part (there is a slight gap left on the equalizer))
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! 2025/7/19 sales price 258,000 yen In addition to replacing a total of 10 capacitors, every corner of the SW has been cleaned and maintained! A control amplifier representing the golden age of McKinn. Compared to the C28, this model has a wider range and more subtlety. The rich, glossy, and thick tone is alive and well, and it plays particularly well with vintage speakers. There is a feeling of use on the exterior, such as line damage or dullness. Serial JBZ7967 (Jun Tamai)
Maintenance information: 2025.7.19 maintained (each SW, VOL cleaning, push button dismantling and cleaning, lamp deterioration replacement, bridge diode deterioration replacement, auto on-board capacitor replacement, glass panel peeling correction (text part not possible), pin jack cleaning, headphone noise → capacitor fluid leak replacement, some bubble noise remains when switching between BASS and TREBLE.)
Accessories: copy of instruction manual
Main specifications: frequency characteristics 20 Hz to 20 kHz input terminals PHONO 1 · 2, AUX, TUNER, TAPE 1 · 2 W406 × H138 × D330 mm 8.6 kg
The price has been drastically reduced. 2024/11/8 Sales price 258,000 yen Volume contacts have been cleaned and 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. 2025/8/27 sales price 238,000 yen Maintenance has been completed with attention to details such as replacing 26 capacitors and replacing lamps. A control amplifier representing the golden age of McKinn. Compared to the C28, this model has a wider range and more subtlety. The rich, glossy, and thick tone is alive and well, and it plays particularly well with vintage speakers. The exterior and front of the top plate are curved, dullness, scratches, etc., and a feeling of use can be seen (Kobayashi Hitoshi)
Maintenance information: 2025.8.26 Maintained (each SW, VOL cleaned, 5 lamps, bridge diode replaced. BASS-TREBLE direct soldering, push button dismantling and cleaning, pin jack cleaning, main VOL shaft length, angle processing correction, other pattern internal correction, cleaning (BASS and TREBLE Gari cannot be completely captured)
Accessories: copy of instruction manual
Main specifications: frequency characteristics 20 Hz to 20 kHz input terminals PHONO 1 · 2, AUX, TUNER, TAPE 1 · 2 W406 × H138 × D330 mm 8.6 kg
The price has been drastically reduced. 2025/7/16 sales price 258,000 yen Maintenance has been completed, such as switch cleaning, glass panel peeling correction, etc. Signed by Gow! Macintosh's classic preamp. It reproduces clear mid-range and glossy tones. This model should be used by music fans who enjoy all kinds of sources. The full range of functions, such as a 5-band equalizer and a 7-source input selector, is also attractive. There is a feeling of use such as slight dullness. Serial EB3654 (Takasaki Atsushi)
Maintenance information: 2025.7.15 maintained (selector SW contact plate cleaning, switching transistor, IC, etc., operation check) 2025.7.8 maintained (phono part installation, various SW/VOL cleaning (equalizer cracks cannot be removed), push button SW dismantling and cleaning, glass panel peeling correction, pin jack cleaning, lamp replacement, companion noise → relay (Pot replacement, operation check)
Accessories: copy of the 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
1 bottle sale rectifier tube American black plate McIntosh print measurement value 60 (rejected value 40) manufacturer with white box, model number printing has disappeared, but it was determined that it was RCA 5U4GB based on the structure ※The measured values indicate GM values measured with the TV-7 testing machine (Kojima Yosuke)
Accessories: white box
The disposal price has been reduced. Member discounts are not applicable. 2024/6/5 sales price 148,000 yen Maintenance completed! Scarce! Mcintosh tubular 2ch mono FM/AM tuner. The band was changed from the US version to domestic use, and the deteriorated vacuum tubes, capacitors, etc. were replaced, and they were restored brilliantly. I take my hat off to the persuasive power of the tuning, and the super rich, sexy sound quality typical of McKinn, even just listening to the narration. In addition to paint peeling on the exterior and metal frame, you can also see a feeling of use over time, such as dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.6.4 maintained (for US use → band change/AC100 → 117V step-up transformer added AC code exchange/block capacitor 50 μF x 4 replacement/3 electrolytic capacitors 20 μF, etc. · 5 ceramic capacitors 15 pF and others added or replaced · 2 vacuum tubes 6Be6 and 6AB4 replacements (both offset with supply 6V4) · AM antenna line 5m added · vacuum tube 6U8 and 6AB4 (2 6AU6 exchanges, IF/RF readjustment ※ operation checked with other AC117V)
Accessories: step-up transformer
Main specifications: Vacuum tubes used EF94/6AUC, 6BN6, 6BJ6 x 2, 6BA6, 6B4, 6B07A, 12AU7A, 6BQ7A, 6AL5, 6BU8, 12AU7R, etc., all 18 others W374 x H120 x D304 mm 7.7 kg
Significant price reduction. 2025/8/14 sales price 238,000 yen Maintenance completed! 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. As for the exterior, one part of the main out terminal is missing, and the overall feeling of use such as dullness, rust, and scuffs can be seen (Mizusaki Ryo)
Maintenance information: 2025.8.14 maintained (each SW, VOL cleaning, pin jack cleaning, lamp deterioration replacement, pin jack earth plating wire treatment, operation check (VOL type gaps cannot be completely removed), no parts of the main speaker terminal part (not available))
Accessories: copy of instruction manual
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
Maintained! 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. There are small scratches and threads on the exterior. ※The power supply has been changed to an inlet specification. Serial AK1481 (Tamura Eiji)
Maintenance information: 2025.6.27 Maintained (main volume disassembly contact polishing cleaning due to poor contact noise. Disassembly contact polishing and cleaning due to poor tone switch contact. Other switches, volume contact cleaning. Since the RCA terminals are corroded and the shape is different, all terminals have been replaced. Electrolytic capacitor replacement. A power supply circuit capacitor was added to make a hum sound. (Panel cleaning, exterior and interior cleaning.)
Accessories: power cable
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. 2025/6/26 sales price 238,000 yen Maintenance has been completed, such as capacitor replacement and switch disassembly and polishing! A control amplifier representing the golden age of McKinn. Compared to the C28, this model has a wider range and more subtlety. The rich, glossy, and thick tone is alive and well, and it plays particularly well with vintage speakers. There is a feeling of use on the exterior, such as scratches and dullness over time. Serial JBZ4959 (Yamato Yuki)
Maintenance information: 2025.6.26 maintained (each SW, VOL cleaning lamp replacement, push button, poor contact dismantling, cleaning, BASS, TREBLE direct soldering, glass panel peeling correction, pin jack cleaning, auto onboard part capacitor replacement balance, operation check balance knob adhesive ※ noise during BASS-TRBLE switching cannot be removed any more)
Accessories: copy of instruction manual
Main specifications: frequency characteristics 20 Hz to 20 kHz input terminals PHONO 1 2, AUX, TUNER, TAPE 1, 2 W406 × H138 × D330 mm 8.6 kg
※Shipping service. No. 58 Special Feature = 3rd <THE STATE OF THE ART SUPREME COMPONENT> AWARD SELECTION/ NEW JBL4345 Detailed Report/ EMT927VS Torrence Reference/Listen to Tannoy SRM Series/Infinity “IRS” Anatomy/1981.4.15 issue. Published models: JBL/4345BWX MCINTOSH/MC2500 VICTOR/TT-801, CL-P10, TS-1 MICRO/SX-8000, HS-80 ONKYO/INTEGRA P-309, INTEGRA M-509 MARK LEVINSON/ML-6AL AUDI-TECHNICA/AT-34E11 ENTRE/EC-30 SME/3012-R SPECIAL TECHNICS/EPC-C100CMK3 FIDELTY RESEARCH/XF-1 SELLESION/DITTON300 KEF/MODEL105.4 KENWOOD/L-08C, L-08M PIONEER/A-980 SANSUI/AU-D907F SONY/TA-AX8 LO-D/TU-1000 LUXMAN/PD300 ADC/ASTRION LINN/ASAK/ S56.4.15 issued. Since the photograph is a sample, the actual item may be broken or have markings etc.
This pan lock is used when storing an amplifier in a wooden case. The models that can be used are not known here, so please carefully check the target product to be used before purchasing. Exterior, paint peeling, rust, dullness, and feeling of use can be seen (Kobayashi Hitoshi)
Accessories: none
Main specifications: hole pitch 77 mm, rail length 143 mm, body size W33 x H106 x D325 mm (actual measurement)
This pan lock is used when storing an amplifier in a wooden case. The models that can be used are not known here, so please carefully check the target product to be used before purchasing. You can see the exterior, dullness, paint peeling, abrasions, etc. (Kobayashi Hitoshi)
Accessories: none
Main specifications: hole pitch 132 mm body size W32 x H155 x D345 mm (actual measurement)