※The hood is missing. TVA-1 is a famous British vacuum tube power amplifier. Equipped with a sturdy, heavy transformer, this is reflected in sound quality. The sound quality is thick and has good extrusion, and the driving power is off par. You can enjoy the attractive vacuum tube sound with the tenacity of the mid-range and the bright mid-high range. ※Since glass fragments are mixed into one bottle of KT88, it makes a rattling sound, but there is no effect on performance. On the exterior, dullness and oxidation can be seen on the chassis (Yonejima Satoshi)
Maintenance information: 2022.7.28 Maintained (power plug replacement. 2 vacuum tube KT88 replacements (electro-harmonix). 2 12AX7 vacuum tube replacements (SOVTEK etc.) 6 5W and 3W resistors Power toggle switch replacement. Vacuum tube socket and RCA jack caulk repair. Other operation has been checked (measured at 78W SP:8Ω with rated output AC100V) *Please use this model at AC100V. Also, do not move the vacuum tube as much as possible. (Noise levels, etc. have been optimized)
Accessories: No accessories
Main specifications: 2 phono systems (MM), 5 input systems, 2 output systems, dimensions W480 x H90 x D360 mm, weight 7.4 kg
It is a famous machine with a velvet transformer that was maintained in 2016, and you can enjoy rich sound with stable operation. The fresh, glossy tone in the mid to high range has a different appeal from the MC275. The input terminals are gold-plated terminals. Appearance, loss of lettering, light rust, dullness, scuffs, etc., and a sense of use appropriate for the age can be seen (Kanai Hidetsugu)
Maintenance information: 2016.9.30 maintained (VT12AX7 replacement block.c100μf x 2 replacements, 2 block.c80/40/30/20 μf replacements, AC cord exchange, thermistor replacement, 4 R1/2W replacements, VT socket and RCA jack caulking repair*Other parts check OIL.C and ELC have been replaced by other companies (B.B B.C. SPRAGUE Mallory, etc.)
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
Full maintenance has been completed, including block capacitors and capacitor replacements. 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 to high range has a different appeal from the MC275. A feeling of use can be seen on the exterior, dullness, small scratches, scratches, rust, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.3.23 maintained (100 μF x 2 others replaced with F&T → CE products, 4 additional baking plates, 4 oil capacitors, 0.22 μF replacement, 2 W and 1W domestic → USA products, 3 selector knobs missing, additional input part, ground reinforcement repair, vacuum tube socket and RCA jack re-caulking repair* Other operation checks completed (30-41 W SP with rated output AC 100 to 117 V :Measured at 8 ohms))
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
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
Maintained! A power amplifier with a separate name for the main part of the SQ38F series. 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. There are bumps, line damage, and paint peeling in places (Kojima Yosuke)
Maintenance information: 2024.2.2 Maintained (vacuum tube sockets, block capacitors, electrolytic capacitors, oil capacitors, SP and RCA terminals, semi-fixed VR, fuse holder replacement, W · VOL disassembly contacts polished, oxidation and vulcanization prevention grease applied. Input/output waveform confirmation, load test (1kHz sine wave, at 8Ω load: 30W/30W), sound output tested)
Accessories: copy of instruction manual
Main specifications: output 30W+30W 50ca10PP OY-15-5 dimensions W410 x H160 x D205 mm weight 13.8 kg
The A2500 is a tube type power amplifier kit that has been replaced with speaker terminals that are easy to use even for beginners. 6AQ8 for the first stage and 12AU7 for the phase reversal stage both use triodes. Since triodes are used across all stages, the sound is taut and bright, with excellent nude characteristics. The exterior has dullness over time, rust, and small scratches. Serial 560561 (Miura Kimiya)
Maintenance information: 2018.4.28 Maintained (printed circuit board resistor replaced. (Adjustment characteristics check OK) 2014.11.21 maintenance completed (input VR, vacuum tube socket, coupling capacitor, SP terminal, BIAS DC BAL, semi-VR, each deterioration exchange, adjustment, characteristic check OK)
Accessories: instruction manual
Main specifications: 6 RA8 push-pull 6 RA8 x 4/12 AU7 x 2/6AQ8 10W+10W W410 x H145 (with hood) x D190 mm 9.6 kg
The SP terminal was also replaced with one that can use bananas. Maintenance was completed by investing a lot of time and money to replace block capacitors, electrolytic capacitors, oil capacitors, etc. This is the popular A3500. Recommended for those who want to try out a vacuum tube amplifier for the first time! Of course, the warm sound of a vacuum tube is also there, but the clean and smooth sound quality using the EL34 push-pull is attractive. You can see a feeling of use, such as appearance, dullness, small scratches, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.2.20 Maintained (vacuum tube sockets, block capacitors, electrolytic capacitors, oil capacitors, SP and RCA terminals, semi-fixed VR replacement. Load test (8Ω load 1kHz 40W+40W), input/output waveform confirmation, sound output check)
Accessories: copy of instruction manual
Main specifications: 40W+40W (8Ω) vacuum tube 6CA7×4/6AQ8×3 W465×H168×D206mm 16kg
The A3500 vacuum tube power amplifier has been refreshed by thorough maintenance down to the smallest details, such as volume disassembly and polishing. The warm, fresh tone, filled with the appeal of a vacuum tube type, is still appealing enough today. You can enjoy music with a rich, thick tone that contrasts with the clicking tones of recent vacuum tube amplifiers. The exterior has a feeling of use such as dullness and small scratches, and there are dents on the hood. ※3-pole tube connection specification. 20W+20W (actual measurement) is output as specified by the manufacturer (Takahashi Nobuyuki)
Maintenance information: 2023.2.3 maintained (main tube (6CA7) replacement vacuum tube socket, block capacitor, electrolytic capacitor, oil capacitor, SP and RCA terminals, complete disassembly of semi-fixed VR replacement power input gain volume, contact polishing, anti-oxidation/sulfation grease coating load test (8Ω load 1kHz 20W+20W) input/output waveform confirmation sound output check performed)
Accessories: copy of instruction manual
Main specifications: 20W+20W (8Ω) vacuum tube 6CA7×4/6AQ8×3 W465×H168×D206mm 16kg
Refreshment maintenance completed product! The refreshing sound was revived by replacing the banana-compatible SP terminal and replacing deteriorated parts, including electrolytic capacitors and transistors. 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. Serial 574515 (Tomonori Asaine)
Maintenance information: 2023.10.19 maintained (empty tube socket block capacitor, electrolytic capacitor, oil capacitor SP and RCA terminal semi-fixed VR, fuse holder replacement, SW/VOL disassembly contact refinement, oxidation and vulcanization prevention grease coating load test (1 kHz sine wave, 8 ohm load: 26W+26W actual measurement) sound output test)
Accessories: copy of instruction manual
Main specifications: 30W+30W 50CA10 push pull W410 x H160 x D205 mm 13.8 kg
The disposal price has been reduced! Member prices are not applicable. 2024/2/25 sales price 99,800 yen Small output mono power amplifier using 300B. If you combine it with a highly efficient speaker, you can listen in a good atmosphere with a thick sound typical of 300B. The exterior has line scratches and paint peeling. Serial 96Z0068S (Fujisawa Yukishi)
Maintenance information: 2024.2.25 Operation confirmed
Accessories: instruction manual, power cord
Main specifications: mono amplifier 5.2 W+5.2 W vacuum tube 6 SL7GT x 1 · 300 B x 1 W200 x H160 x D360 mm