Maintained! The original MC275 is the pinnacle of Macintosh tube amplifiers. A famous historical instrument that deeply entertains music with a powerful tone with velvety luster and thickness. The rich sound that makes you feel a sense of life rather than resolution or wide range is just the Macintosh sound itself. The exterior has rust, dirt, and a feeling of use (Hiura Katsuji)
Maintenance information: 2023.8.21 Maintained (Block Conde 100/30 μF Bad Replacement, 4 Electrolytic Capacitors, 12 μF, Other Deterioration Replacements, 2 Electrolytic Capacitors, 100 μF, Domestic → US Made, 2 Replaced Film Capacitors, 0.22 μF, Other Oil Capacitors, Thermistor Degradation Replacement and Addition 2, Selenium Deterioration → Diode Added, 2 Resistors, 1/2 W Deterioration Replacements, Vacuum Tube Socket and RCA Jack Caulking Repair※ Other operations have been checked
Accessories: none
Main specifications: 75W+75W (in stereo), 150W (in mono), vacuum tube 12BH7 x 2, 12AX7 x 1, KT88 x 4, 12AU7 x 2, 12AZ7 x 2, W311 x H203 x D438 mm 30.4 kg
Fully maintained in 2023. 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. On the exterior, characters have disappeared, and there is oxidation etc. depending on the age (Murakoshi Yoichi)
Maintenance information: 2023.6.4 Maintained (thermistor deterioration replacement and 2 additional ones. Replace 3 100 μF electrolytic capacitors and others for deterioration ·. Replace 4 100/30 μF deterioration block capacitors. Replace 2 oil capacitors with 0.22 μF deterioration. Lug terminal deterioration replacement. Vacuum tube 12BH7 replacement. Vacuum tube socket and RCA jack caulk repair and other operation checks completed (measured at 72 to 105 W SP: 8 Ω with rated output AC 100 to 117 V)
Accessories: none
Main specifications: 75W+75W (in stereo) 150W (in mono) vacuum tube 12BH7 x 2, 12AX7 x 1, KT88 x 4, 12AU7 x 2, 12AZ7 x 2 W311 x H203 x D438 mm 30.4 kg
The original MC275, the highest peak of Macintosh tube amplifiers, is now in stock. Using GEC's KT88, it is a historic famous machine that makes music rich and entertained with a powerful tone with velvety luster and thickness. A dense sound that makes you feel a sense of life, not resolution or wide range, is exactly the Macintosh sound itself. The appearance has some corrosion, dullness, and rust floats around the fuse holder, but the original decal has it, and it is not bad considering the year (Yoichi Murakoshi)
Maintenance Information: 2022.5.18 Maintenance (TWIN and STEREO INPUT cleaning repair, thermistor deterioration replacement and addition, resistance 2W deterioration replacement, ground strengthening repair near the input, vacuum tube socket And RCA jack caulking repair (Other operations have been checked.)
Accessories: None
Main specifications: 75W+75W (stereo time) 150W (mono time) used vacuum tube 12BH7 × 2, 12AX7 × 1, KT88 × 4, 12AU7 × 2, 12AZ7 × 2 W311 × H203 × D438 mm 30.4kg
The original MC275, the highest peak of the Macintosh tube amplifier, is in stock. A historical famous machine that uses GEC's KT88 to enjoy music intensely with a powerful tone with velvety gloss and thickness. The deep sound that makes you feel a sense of life, not the wide resolution or range, is exactly what the Macintosh sound itself is. There is some corrosion, dullness, and rust floating in the appearance (Yoichi Murakoshi)
Maintenance information: 2021.11.30 maintenance (2 resistors 1/2W replacement, selenium degradation → diode added, block capacitor 80/40/30/20μF replacement. 4pcs · Oil capacitor 0.22μF defective replacement · Vacuum tube socket and RCA jack caulking repair. (Other operation has been checked.)
Accessories: bonnet
Main specifications: 75W+75W (stereo time) 150W (mono time) vacuum tube/12BH7×2, 12AX7×1, KT88×4, 12AU7×2, 12AZ7×2 frequency band 16Hz ~ 60kHz Input sensitivity 0.5V Input impedance 250kΩ Dimensions W311 × H203 × D438mm Weight 30.4kg
Full maintenance including thermistor replacement and addition, block capacitor replacement! The original MC275. A famous historical machine that lets you enjoy music intensely with a powerful tone with a velvety luster and thickness. The rich sound that makes you feel a sense of life rather than resolution or range is exactly what Macintosh sound itself is. There are exterior, small scratches appropriate to the model year, paint peeling on the transformer, etc., but the lettering condition is also good, making it a good type of individual (Kobayashi Hitoshi)
Maintenance information: 2023.11.7 maintenance completed (bad contact repair for each volume, 2 thermistor deterioration replacements and additions, 2 block capacitors 100/30 μF deterioration replacements, vacuum tube sockets and RCA jack re-caulking repair*Other operations checked)
2013.11.1 maintenance completed (1 vacuum tube 12AZ7BIAS defect replacement, 1 vacuum tube 12BH7BIAS defect replacement, electrolytic C12 μF250V deterioration replacement, electrolytic C100 μF 16V deterioration replacement, selenium deterioration diode addition, SP terminal deterioration replacement, bottom screw missing item addition/rubber leg damage replacement ※ all OIL.C has been replaced (made by BlackBeauty), other capacitors and resistors have been checked)
Accessories: none
Main specifications: 75W+75W (in stereo), 150W (in mono), use vacuum tube 12BH7 x 2, 12AX7 x 1, KT88 x 4, 12AU7 x 2, 12AZ7 x 2, W311 x H203 x D438 mm, 30.4 kg
* When using AC117V, the power transformer makes a slight noise. There is no problem with performance. The original MC275, the pinnacle of Macintosh tube amplifiers, is in stock. Using the KT88 of the UK Monarch, it is a historic famous machine that intensely entertains music with a powerful tone with a velvety luster and thickness. The dense sound that makes you feel a sense of life, not the wide resolution or range, is exactly the Macintosh sound itself. The exterior has a feeling of use such as rust floats, dullness, abrasions, etc. corresponding to the age (Hitoshi Kobayashi)
Maintenance information: 2022.7.15 Maintenance (selenium degradation, diode addition, main volume, thermistor, electrolytic capacitor, resistor 1/2W, AC code replacement. Input grounding reinforcement repair, RCA jack and vacuum tube socket caulking repair. Other operation checked (measured at 68-98W SP: 8Ω at rated output AC100-117V)
Accessories: none
Main specifications: 75W+75W (stereo time) 150W (mono time) used vacuum tube 12BH7 × 2, 12AX7 × 1, KT88 × 4, 12AU7 × 2, 12AZ7 × 2 W311 × H203 × D438 mm 30.4 kg
The highest peak of the Macintosh tube amplifier, the original MC275, is in stock. Using GEC's KT88, it is a historic machine that makes music rich and enjoyable with a thick and powerful tone. A dense sound that gives a sense of life, not resolution or wide range, is exactly the Macintosh sound itself. The exterior has some corrosion, dullness, and rust floats (Sasaki Shota)
Maintenance information: 2021.12.10 Maintained (each volume contact failure repair · Oil capacitor 0.22μF other OrangeDrop → Replace with BlackCAT 10pcs · Electrolytic capacitor 20 μF deterioration exchange 5 pieces · Selenium deterioration → Diode added · Thermistor deterioration replacement and addition 2 pcs · Vacuum tube 12AZ7 deterioration exchange 2 tubes · Vacuum tube KT88 deterioration exchange · Resistor 2W and 1W deterioration exchange 8 pieces · Vacuum tube Socket and RCA jack caulking repair* Other operation checked (measured at 72-91W SP:8Ω at rated output AC100-117V))
Accessories: Copy of instruction manual (English)
Main specifications: 75W+75W (stereo) 150W (when monaural) used vacuum tube/12BH7×2, 12AX7×1, KT88×4, 12AU7×2, 12AZ7×2, 12AZ7×2 Frequency band 16Hz to 60kHz Input sensitivity 0.5 V Input impedance 250 kΩ Dimensions W311 × H203 × D438 mm Weight 30.4 kg
Unopened Brand New! (Opened for operation check) AIR TIGHT brand 30th anniversary model. A luxurious one that delicate 300B domestically produced on the output tube. Transformers are also newly adopted for this amplifier, and the precision and clarity of sound stand out. You can enjoy the true culmination of the sound making of modern tube amplifiers (Yosuke Kojima)
Maintenance Information: 2021.3.7 Operation confirmed
Accessories: Instruction manual, power cable, original box
Main Specifications: 300B Single Takatsuki TA-300B x 2 uses 300B x 2/12AU7 × 2/12BH7 × 2/5U4GB × 1 Output 9W+9W Damping Factor 7 Serial: 29070 W430 × H245 × D275mm Approx. 24kg
Unopened Brand New! (Opened for operation check) AIR TIGHT brand 30th anniversary model. A luxurious one that delicate 300B domestically produced on the output tube. Transformers are also newly adopted for this amplifier, and the precision and clarity of sound stand out. You can enjoy the true culmination of the sound making of modern tube amplifiers (Yosuke Kojima)
Maintenance Information: 2021.3.7 Operation confirmed
Accessories: Instruction manual, power cable, original box
Main Specifications: 300B Single Takatsuki TA-300B x 2 uses 300B x 2/12AU7 × 2/12BH7 × 2/5U4GB × 1 Output 9W+9W Damping Factor 7 Serial: 29071 W430 × H245 × D275mm Approx. 24kg
Significantly below price (2021.3.2 selling price 898,000 yen), the highest peak of the tube amplifier, the original MC275 is in stock. A historical inscription that enriches music with a velvety luster and a strong tone with a thick tone. Not a resolution or range, but a lively, energetic sound is exactly the macintosh sound itself. * The transformer is slightly recessed. Appearance has corrosion and scratches due to kusumi and oxidation (Satoshi Yonejima)
Maintenance information: 2021.3.2 Maintenance (6 resistors 1W noise and degradation exchange, 4 resistors 2W degradation exchange, Selenium degradation countermeasures → Diode addition, Vacuum tube 12AZ7 degradation exchange)
Accessories: No accessories
Main specifications: 75W+75W (stereo time) 150W (mono time) used vacuum tube/12BH7 × 2, 12AX7 × 1, KT88 × 4, 12AU7 × 2, 12AZ7 × 2 Frequency band 16Hz to 60kHz Input Sensitivity 0.5V Input Impedance 250kΩ Dimensions W311 × H203 × D438mm Weight 30.4 kg
The price has been drastically reduced! 2023/9/30 sales price 898,000 yen maintenance completed! Comes with a bonnet The original MC275, the pinnacle of Macintosh tube amplifiers, has arrived. A historic masterpiece that deeply entertains music with a powerful tone with velvety luster and thickness. The rich sound that makes you feel a sense of life rather than resolution or wide range is just the Macintosh sound itself. Corrosion around the fuse is conspicuous on the exterior (Satoshi Yonejima)
Maintenance information: 2023.9.30 maintenance completed (selenium deterioration → diode added. 3 100/30μF block capacitors have been replaced for deterioration. 0.22 μF oil capacitor replacement. Electrolytic capacitors 12 μF and 3 other deterioration replacements. 4 resistors replaced with 2 W domestic ones → made in the USA. 10 resistors were replaced with 1W and 1/2W domestic ones → made in the USA. Vacuum tube socket and RCA jack caulking repair. Other operations have been checked (measured at 72 to 98 W with rated output AC100 to 117 V, SP: 8 ohms)
Accessories: bonnet
Main specifications: 75W+75W (in stereo), 150W (in mono), vacuum tube 12BH7 x 2, 12AX7 x 1, KT88 x 4, 12AU7 x 2, 12AZ7 x 2, W311 x H203 x D438 mm 30.4 kg