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Manufacture | Model/Title | Price | Arrival date

MARK-3U.S.A

Ask 11-61098-26663-00
MARK-3
Manufacture:DYNACO
Price: JPY 116,364(pair)
U.S.A 1976 made
Shop: Osu shop
Arrival: 2025-10-22 20:14:41
description
The price has been drastically reduced. 2025/10/22 sales price 148,000 yen Maintenance completed! DYNACO's tubular mono power amplifiers are highly popular. The sleek, straight, and energetic sound that comes out of the small body is attractive. Combinations with Altech and JBL are a staple, and they make jazz and rock sounds powerful and full of realism. The exterior has noticeable paint peeling on one side and there is rust (Mizusaki Ryo) Maintenance information: 2025.10.22 maintained (AC cord replacement, power transformer replacement, block capacitor replacement, bias circuit electrolytic capacitor replacement, preamplifier power socket wiring, power switch disassembly and cleaning, deteriorated resistor replacement (11 pieces), 6550A replacement) Accessories: none Main specifications: tubular mono power amplifier using vacuum tube 6550/5AR4/6AN8A output 60W/140W W229 × H190 × D229 mm 11.5 kg

PASU.S.A

Ask 25-47435-17980-00
PAS
Manufacture:DYNACO
Price: JPY 90,727
U.S.A
Arrival: 2025-10-16 19:47:01
description
The price has been drastically reduced! 2025/10/16 sales price 118,000 yen Maintained! This is a Dynaco tubular control amplifier. It is an amplifier where you can enjoy the warm and comfortable sound unique to vintage. While the microwave feel is moderate, the nostalgic sound with an emphasis on atmosphere has a unique, hard-to-get flavor. The exterior has rust-like stains on the top and sides, and there is a feeling of use such as rust on the knobs (Satoshi Yonejima) Maintenance information: 2025.10.16 Maintained (main volume replacement and resistance 1/2W numerical change) 2024.5.29 maintained (12AX7, 2000 μF electrolytic capacitor, 1 μF replacement, 1/4 W resistor added as a measure to improve switching noise, vacuum tube socket and RCA jack caulking repair, parts including block capacitors checked, and operation checked with AC 100 to 117 V) Accessories: No accessories Main specifications: vacuum tube 12 AX7 x 4, 12 x 4 line input 5 systems phono 1 system (mm), 1 pre-out system, W385 x H134 x D230 mm 7 kg

25 TV-EW

Ask 20-28742-33386-00
25 TV-EW
Manufacture:SEAS
Price: JPY 7,273(pair)
Arrival: 2025-08-03 20:00:02
description
※The shape of the frame is different on the left and right. How about a replacement for those who make their own SEAS 25cm woofers or those who use DYNACO speakers? There are stains and scratches on the exterior (Tamura Eiji) Maintenance information: 2025.8.3 sweep check OK Accessories: No accessories Main specifications: 0.8 kg/0.9 kg

MARK-3U.S.A

Ask 25-46873-13808-00
MARK-3
Manufacture:Dynaco
Original price: JPY 174,000
Price: JPY 86,182(pair)
U.S.A 1976 made
Shop: Osu shop
Arrival: 2025-09-15 20:03:57
description
The disposal price has been reduced. Member prices are not applicable. 2025/9/16 sales price 148,000 yen ※The power supply specifications are different between the 2 units, but maintenance is performed according to the 117V specifications. Sufficient output is produced even at 100V. Maintenance includes replacement of 6550A4, 42 5ARs, 2 capacitors, 9 resistors, etc. 117V specification DYNACO's tubular mono power amplifiers are highly popular. The sleek, straight, and energetic sound that comes out of the small body is attractive. Combinations with Altech and JBL are a staple, and they make jazz and rock sounds powerful and full of realism. The color of the transformer is different between the two cars, and there are rust, dullness, small scratches, etc. appropriate for the model year (Oikawa Tetsuji) Maintenance information: 2025.9.15 Maintained (all soldering around the vacuum tube socket and block capacitor terminals corrected, wiring to the preamp power socket was implemented, selenium in the bias power supply was changed to silicon diodes for preventive maintenance, electrolytic capacitor replacement on the bias power supply unit (2 pcs/Ch), lead wire soldering correction to the board, bias volume cleaning, soldering correction around the speaker terminal, mica Confirmation of capacitor insulation and capacity (Ch.A specific repair) US socket cleaning, cleaning, exchange resistors with different values from the circuit diagram due to resistors on the board (3 positive: 47k, mounting: 51k), replacing those synthesized with resistors on the board and matching the resistance values with 1 resistor (2 locations 1.5m and 270k), board pattern peeling correction (Ch.B specific repair) power supply and output transformer cover changed to 4 points, operation test) Accessories: none Main specifications: tubular mono power amplifier vacuum tube 6550/5AR4/6AN8A output 60 W (measured output: 55.1/55.1 W at 117 V, 40.5/40.1 W at 100 V*1 kHz, 8 ohm) W229 × H190 × D229mm 11.5 kg

STEREO 120U.S.A

Ask 25-47120-15520-00
STEREO 120
Manufacture:DYNACO
Original price: JPY 94,000
Price: JPY 45,273
U.S.A
Arrival: 2025-08-01 19:54:12
description
The price has been drastically reduced. 2025/8/1 sales price 59,800 yen ※A trance growl will occur, but this cannot be corrected. Maintenance completed in 2019. Dinaco's transistor stereo power amplifier was developed by applying technology obtained with tubular amplifiers to semiconductor circuits. It is a sound that allows you to broadly enjoy the atmosphere without requiring precise expression of sound. There is a feeling of use (Murakoshi Yoichi) Maintenance information: 2019.8.9 maintained (internal dismantling check, LCH power stage TR/constant voltage TR characteristics defective/circuit board coupling C interruption/capacity loss → replacement, operation check OK) Main specifications: 60W+60W W330 x H104 x D260 mm 8 kg
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