The price has been drastically reduced. 2025/1/29 sales price 398,000 yen Maintained! It is a vacuum tube amplifier that is the younger brother of the Meiki MC275. The moderate stickiness and rich sound are good hues unique to vintage McKinn. It is less rough than the MC275, and you can feel the high level of relaxed musicality. The exterior has a feeling of use such as oxidation and rust (Yoichi Murakoshi)
Maintenance information: 2025.1.28 maintenance (block capacitor 80/40/30/20 μF replacement/oil capacitor C-D (green)) → replace 2 diodes to BlackBeauty, replace 2 resistors with 1W. Vacuum tube socket and RCA jack caulk repair. (Measurement operation check with rated output AC 100 to 117 V, 24 to 36 W, SP: 8 Ω)
Accessories: bonnet, instruction manual (English copy)
Main specifications: 25W+25W vacuum tube 7591 (output tube), 12BH7, 12AU7, 12AX7 W232 x H178 x D368 mm 15.4 kg
The price has been drastically reduced! 2025/1/25 sales price 498,000 yen 2024, maintenance such as capacitor replacement/replacement of deteriorated parts has been completed! It is a famous machine with a velvet transformer, and you can enjoy rich sound with stable operation. The fresh, glossy tone in the mid-high range has a different appeal from the MC275. The exterior has a feeling of use over time, such as dullness, scratches, and corrosion (Kanai Hidetsugu)
Maintenance information: 2024.5.19 Maintained (volume curing improvement treatment for TWIN, 2W oil capacitor replaced with 0.01μF, 3W oil capacitor replaced with 0.5 μF, missing thermistor, replacement, 250μF, domestic CE replacement, block capacitor 100/30 μF defective replacement, oil capacitor 0.22 μF defective replacement electrolytic capacitor 20μF, etc. Deterioration replacement resistor 2W deterioration replacement Vacuum tube socket and RCA jack caulking repairs ※ Other operation checks have been performed (measured at 41 to 58 W with rated output AC 100 to 117 V, SP: 8 Ω) ※ The power transformer groans a little, but there is no problem with performance)
Accessories: none
Main specifications: 40W+40W 6L6GCPP vacuum tube 6L6GC × 4 12AX7 × 3 12AU7x2 12BH7 × 2 frequency characteristics 16 to 40,000 Hz dimensions W400 × D265 × H195 mm weight 25 kg
The disposal price has been reduced. Member discounts are not applicable. 2024/12/18 Sales price 348,000 yen Maintenance completed! Kit model of Old Marantz's greatest masterpiece power amplifier 8B. The exquisite bandwidth balance and good output set it apart from common old amplifiers. The information necessary for music is perfectly incorporated into the narrow range, and the high level of freshness is also exceptional. You can see the exterior, dullness, rust, abrasions, etc. and a feeling of use (Kobayashi Hitoshi)
Maintenance information: 2024.12.18 Maintained (block capacitor 0/20 μF and others, 3 defective replacements; BIAS knob replacement, BIAS knob replacement, internal wiring, solder treatment, vacuum tube 6BH6 replacement, BIAS readjustment, external cleaning, vacuum tube socket and RCA jack caulking repair*Other operation checked with AC100V (measured at rated output 45W SP: 8Ω)
Accessories: instruction manual
Main specifications: 35W+35W 20Hz-40kHz W348 × H191 × D273 mm 22.5 kg
Maintenance was carried out with attention to detail, such as replacing capacitors and replacing SP terminals! A kit model of a power amplifier using a 50CA10 3-pole output tube and an OY15 type output transformer, composed of circuits and parts conforming to the MQ60 type, which has been evaluated by LUXMAN. The sound of a vacuum tube has a sense of volume that seems to meet expectations, and it gently envelops you. The sound, which doesn't require scale, is particularly unique, and the slight thickness that spreads from below the mid-range makes you feel comfortable. (Sasaki Shota)
Maintenance information: 2025.2.1 Maintained (vacuum tube sockets, block capacitors, electrolytic capacitors, oil capacitors, SP and RCA terminals, semi-fixed VR, fuse holder replacement. Load tests (8Ω load 1kHz 30W+30W), input/output waveform confirmation, and sound output checks were carried out. Impedance switching SW, gain VOL complete disassembly, contact refinement, and application of grease to prevent oxidation and sulfidation. Input/output waveform confirmation, load test (1 kHz sine wave, at 8 ohm load: 30W+30W, actual measurement)
Accessories: none
Main specifications: 30W+30W 50CA10 push pull W410 x H160 x D205 mm 13.8 kg
Thorough maintenance was carried out, such as replacing capacitors and deteriorated parts! A custom model whose circuit was changed from the original to a non-feedback amplifier. The output drops by 5W+5W compared to the MQ60, but surprisingly, this one has a better amount of noise, and the sound quality is clean. The appeal is that it is easy to grasp the sense of localization. The exterior has a feeling of use such as dullness. Serial 40401535 (Tomonori Asaine)
Maintenance information: 2024.10.27 Maintained (vacuum tube socket, block capacitor, electrolytic capacitor, oil capacitor, SP and RCA terminals, semi-fixed VR, fuse, spark killer, diode, micro SW replacement. Load test, input/output waveform confirmation impedance switching SW/gain VOL decomposition contact refinement, application of anti-oxidation/sulfidation grease, input/output waveform confirmation, load test (1kHz sine wave, at 8Ω load: 25W+25W), sound output test)
Accessories: none
Main specifications: 50CA10 push-pull output 25W+25W (4/8/16Ω) 50CA10 x 4/12BH7A x 2/6267 W410 x H160 x D205 mm weight 14 kg
Maintenance was carried out with attention to detail, such as replacing deteriorated parts and completely disassembling VOL and repolishing contacts! A kit model of a power amplifier using a 50CA10 3-pole output tube and an OY15 type output transformer, composed of circuits and parts conforming to the MQ60 type, which has been evaluated by LUXMAN. The sound of a vacuum tube has a sense of volume that seems to meet expectations, and it gently envelops you. The sound, which doesn't require scale, is particularly unique, and the slight thickness that spreads from below the mid-range makes you feel comfortable. There are scratches and dullness on the exterior due to use over time. Serial 574994 (Tomonori Asaine)
Maintenance information: 2025.1.18 Maintained (impedance switching SW, gain VOL complete disassembly contact refinement, oxidation and sulfidation prevention grease applied. Vacuum tube sockets, block capacitors, electrolytic capacitors, oil capacitors, SP and RCA terminals, semi-fixed VR, fuse holder replacement. Load test (8Ω load 1kHz 30W+30W), input/output waveform confirmation, sound output check performed)
Accessories: none
Main specifications: 30W+30W 50CA10 push pull W410 x H160 x D205 mm 13.8 kg
Maintenance was carried out with attention to detail, such as replacing capacitors and replacing SP terminals! A kit model of a power amplifier using a 50CA10 3-pole output tube and an OY15 type output transformer, composed of circuits and parts conforming to the MQ60 type, which has been evaluated by LUXMAN. The sound of a vacuum tube has a sense of volume that seems to meet expectations, and it gently envelops you. The sound, which doesn't require scale, is particularly unique, and the slight thickness that spreads from below the mid-range makes you feel comfortable. The exterior has rust, oxidation, and scratches. Serial 574788 (Tamura Eiji)
Maintenance information: 2024.7.11 Maintained (vacuum tube sockets, block capacitors, electrolytic capacitors, oil capacitors, SP and RCA terminals, semi-fixed VR, fuse holder replacement. Check input/output waveforms and perform sound output checks. Impedance switching SW, gain VOL complete disassembly, contact refinement, and application of grease to prevent oxidation and sulfidation. Input/output waveform confirmation, load test (1 kHz sine wave, at 8 ohm load: 27W+27W, actual measurement), sound output test)
Accessories: none
Main specifications: 30W+30W 50CA10 push pull W410 x H160 x D205 mm 13.8 kg
The internal parts have been thoroughly reviewed and brushed up! The main part of the SQ38F is an independent power amplifier, the famous MQ60. The natural, smooth sound quality with a high sense of transparency is attractive. You can relax and enjoy classical music and vocals in a natural way. The deep sound quality that cannot be expressed with the latest vacuum tube amplifiers is exceptional. Rust and paint peeling can be seen on the exterior. Serial 812212 (Fujisawa Yukishi)
Maintenance information: 2024.11.24 Maintained (vacuum tube socket, block capacitor, electrolytic capacitor, oil capacitor, SP and RCA terminals, semi-fixed VR, fuse, spark killer, diode, micro SW replacement. Load tests, input/output waveform checks, and sound output checks are carried out. Impedance switching SW/gain VOL disassembly contact refinement, oxidation and vulcanization prevention grease application, input/output waveform confirmation, load test (1 kHz sine wave, at 8 ohm load: 25W+25W, OK)
Accessories: No accessories
Main specifications: output 30W+30W dimensions W410 x H160 x D205 mm weight 13.8 kg