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
※It is cheap because it is in poor condition due to numerous modifications. Heavyweight horizontal audio rack It's sturdy, so it's fine even if you put a super dreadnought analog player on the top plate. The inside is slightly larger, so even slightly larger full-size equipment can be stored. Since there are many modifications such as the exterior, attaching a copper plate to the upper right shelf, attaching a tile mat to the bottom, and attaching a handle to the tray, etc., the shelf on the right side does not come off, and a feeling of use such as dullness and abrasions can be seen (Kobayashi Hitoshi)
Accessories: none
Main specifications: Overall measurement W1200 x H535 x D572 mm inner dimensions on one side (without shelf board) W530 x H430 x D (top plate 560, medium plate 470, lower stage 560) mm top plate thickness 45 mm shelf board thickness 23 mm weight 69.85 kg
The price has been reduced! 2024/4/27 sales price 79,800 yen Maintained! This is the first AUDIO OF OREGON control amplifier to arrive in a long time. It is compatible with 117V specification American speakers such as ALTEC and JBL, etc., and although it is a transistor, it doesn't become too stiff and makes you enjoy the firm sound. The exterior has dullness and scratches. ※The plug has been changed. Genuine RF Serial 02117 (Tamura Eiji)
Maintenance information: 2024.4.27 Maintained (no running symptoms. The board vibration check connection was checked. (All pattern parts of the flat amplifier module unit have been added and soldered.) 2024.4.13 Maintained (Electrolytic capacitor replacement in amplifier module. Pattern contact defect correction. Voice operation check)
Accessories: No accessories
Main specifications: All stages use pure class A operation circuit input phono (mm/47 kΩ) tuner, tape, aux dimensions W483 x H89 x D190 mm weight 4.5 kg
Maintained! An exclusive popular preamp. It is packed with attention to communication from engineers, such as the quadruple attenuator volume with 22 contacts and the use of copper foil glass epoxy substrates. Oxygen-free copper wire is used as internal wiring material. The abundance of inputs, such as 3 PHONO systems and 3 AUX systems, is also attractive. The high quality, which is thick and roomy, is attractive. There are scratches and scratches on the exterior. Serial 001000885 (Yonejima Satoshi)
Maintenance information: 2024.4.25 Maintained (all lever switch disassembly contacts polished contact grease coated. Rotary switch contact cleaning. Check the operation of each input/output. (Capacitors have been maintained)
Accessories: No accessories
Main specifications: 22 contact attenuator PHONO 3 system TUNER 1 system AUX 3 TAPE system 3 stage switchable attenuator dimensions W468 x H206 x D342 mm weight 12.5 kg
The disposal price has been reduced! (Member discounts are not applicable) 2024/1/18 sales price 49,800 yen Maintained! An American-made amplifier from the 1970s that can hardly be seen today. Circuits for self-preservation, such as security, correction, and protection, have been cut off, and I think that handsome atmosphere is well reflected in the sound. It has the same feeling of use as the model year (Daiki Goto)
Maintenance information: 2024.1.18 Maintained (LED installation (original not available) poor power stage transistor deterioration, defective transistor in the board → replacement. Bias adjustment, operation check.)
Accessories: none
Main specifications: size (actual measurement) W406 x H155 x D327 mm weight (actual measurement) 12.2 kg
*Due to poor LOW volume, the specification has been changed so that only the low frequencies come out at full throttle. Other volumes can be used as normal. A pretty rare Yamaha channel divider. An electronic crossover network equipped with continuously variable crossover frequency, a 3-stage slope selector, and a Q control circuit. For 2 to 3 ways. The exterior has small scratches and dullness (Oikawa Tetsuji)
Maintenance information: 2024.4.24 Maintained (switches and volume contact repairs, LOW volume has passed circuitwise because parts cannot be obtained)
Accessories: none
Main specifications: crossover frequency Low-Mid: 50 Hz, 100 Hz, 200 Hz, 400 Hz, 800 Hz Mid-High: 800 Hz, 1.6 kHz, 3.2 kHz, 6.4 kHz, 12.8 kHz Low-Mid: 35 Hz to 1.13 kHz continuously adjustable by crossover fine adjustment knob, Mid-High: 565 Hz to 18.1 kHz continuously variable W435 × H72 × D349 mm 7.5 kg
The price has been drastically reduced. 2023/4/28 sales price 1,000 yen. ※1 bottle only. Jack Jack Cable 2.0m Studio and Stage Professional Cable There is no habit, and the tone is straightforward (Takasaki Atsushi)
Maintenance information: 2023.4.28 Conductivity confirmed
Accessories: none
The price has been drastically reduced. 2024/4/28 sales price 378,000 yen Macintosh's first hybrid integrated amplifier. The preamp section consists of 12ax7A x 2 and 12AT7 x 2 vacuum tube circuits, and the output stage has a solid-state design with a direct coupled configuration, which combines strength and softness. Compatible with MM cartridges. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.4.27 Operation confirmed
Accessories: remote control, power cord, original box
Main specifications: 100W+100W (8Ω) Phono (MM) W305 x H194 x D419 mm weight 12.7 kg
※Shipping service. Special Feature = Contemporary Noise Thoughts Vol.2/Overview of American 3-Pole Output Tubes/Mos-FET Single Stage OTL Amplifier/Medium Monitor Speaker Research/New Feedback Circuit Type DC Preamplifier/38 cmW Woofer System Vol.4/Published Circuit Diagram: PIONEER CT-580/S57.5.1 Issued Photographs are samples, so the actual product may be broken or written.
The disposal price has been reduced. Member prices are not applicable. 2024/3/7 sales price 128,000 yen Maintained! A crisp, bright, and sharp sound typical of Marantz from the 1970s. Exactly, it's an American sound on the west coast. The design is also a simple design typical of US Marantz. ※The leg is out of stock. The exterior has dullness and small scratches. Serial 4180 (Yonejima Satoshi)
Maintenance information: 2024.3.7 Maintained (single CH power stage transistor replacement. Screwdriver transistor resistor replacement. Drive Tr Capacitor Replacement Contact polishing, aging test)
Accessories: No accessories
Main specifications: 125W+125W (8Ω) W445 × H170 × D265 mm 14.8 kg
The price has been reduced! 2024/4/29 sales price around 298,000 yen is good! Luxman tube power amplifier. Using KT88 as the output stage, it is a powerful yet highly transparent amplifier. It is a vacuum tube amplifier with excellent modern resolution and a sense of speed while being based on classical designs from the past. Serial M20600470A (Fujisawa Yukishi)
Maintenance information: 2024.4.29 Operation confirmed
Accessories: instruction manual, power cord
Main specifications: 25W+25W (4.8/16Ω) input direct 1 system variable 1 system output 1 system (4, 8, 16 ohm independent) power consumption 150 W 440 x 184 x D230 mm 16.1 kg
The price has been drastically reduced. 2023/12/11 sales price 15,000 yen*There is no problem with operation, but since it is cheap, it is being delivered as is. Center speaker for the company's STAGE series. Please help build a theater system (Daiki Goto)
Maintenance information: 2023.12.11 operation confirmed
Accessories: instruction manual
Main specifications: 2-way dual 133mm woofer, 25mm aluminum treble unit impedance 6Ω efficiency 88dB W469 x H190 x D220 mm weight 7.95 kg