Maintained! A slightly unusual Crown consumer power amplifier. It is thin and rack-mountable. A lot of straight sounds are alive and well. It is also suitable as a separate introductory machine. The exterior is dark and has small scratches (Oikawa Tetsuji)
Maintenance information: 2024.3.12 Maintained (volume volume noise was confirmed, so custom-made volume left and right were replaced, (click sound will disappear due to replacement of custom-made product) Running test with other sounds)
Accessories: none
Main specifications: 50W+50W (8Ω) W480 x H40 x D320 mm 7.5 kg
*The lower front panel has been changed to a PRA-1003 panel. Maintained! A stereo power amplifier using a DC amplifier system. The power supply unit is equipped with 2 independent power transformers on the left and right sides. The powerful and clear sound emanating from the sturdy body is impressive! The well-designed analog meters are beautiful. You can enjoy all genres with very good extrusion and a sound that is not addictive. There are stains and small scratches throughout the exterior. Serial 110456 (Fujisawa Yukishi)
Maintenance information: 2024.3.7 Maintained (LR output meter relay replacement, LR power amplifier solder repair, differential circuit part FET, transistor replacement, pin jack replacement, interior and exterior inspection cleaning*Since the ceiling panel cannot be obtained from this unit, it remains the same)
Accessories: none
Main specifications: rated output 100W+100W (4Ω) 85W+85W (8Ω) transmission frequency characteristics DC to 100kHz W410 × H200 × D285 mm 17 kg
The price has been reduced! 2024/2/10 sales price 69,800 yen Maintained! A level meter DA-M15, which is rare for the DA-A15, was attached to the stereo power amplifier and introduced. The output of the music signal coming out of the power amplifier is detected and indicated with 2 meters for each left and right channel. It plays jazz and rock powerfully with a rough sound, which is unusual for domestic machines. Serial A5500129 (Tomonori Asaine)
Maintenance information: 2024.1.22 maintained (3 resistors, deteriorated capacitors, 17 deteriorated capacitors, VR100 kΩ replacement, transistor 2SC2240 2SA970 replacement, other idling, DC balance adjustment, disassembly and cleaning of other speaker relays, etc., internal opening inspection of DA-M15 (power AMP) *Please turn on the DA-A15 side (power AMP) first)
Accessories: none
Main specifications: DA-M15 backup power outlet Switched 6A external dimensions 480 x 179 x 149 mm weight 5.5 kg DA-A 15 part muting time 5 seconds compatible load impedance 4 to 16 ohms power consumption electrical appliance control law 320 W rated output (8 ohms) 520 W external dimensions 425 x 170 x 285 mm weight 18 kg
Disposal prices have been reduced! (Member discount does not apply) 2023/5/13 sales price 69,800 yen ※Since it is not a DC amplifier, please connect the speaker cable and then turn on the power when making sound. Maintained! 120V specification A transistor stereo power amplifier developed by Dynamo by utilizing technology obtained with tube-type amplifiers in semiconductor circuits. You can enjoy intense, dynamic expressions without asking for precise expressions of sound. You can see the appearance, dullness depending on age, corrosion, etc. (Kobayashi Hitoshi)
Maintenance Information: 2023.5.13 Maintained (Power SW Dismantling Contact Cleaning) 2022.8.26 Maintained (Bypass C Replaced. Replace the power stage with a Tr pair. Internal cleaning, operation check. Waveform clip for AC100V. 120V → OK)
Accessories: none
Accessories: none
Main specifications: 60W+60W W330 × H104 × D260 mm 8 kg
The disposal price has been reduced! (Member prices are not applicable) 2024/3/2 sales price 198,000 yen Maintained! This power amplifier was released around the same time as the SG620. It combines 100W+100W driving power with good sharpness. It reproduces thick sounds unique to JBL from a simple design with only a power switch on a black body. It goes well with 70' SJBL speakers and drives exhilarating. The exterior has front scratches, bends on the power switch, scratches, and repair marks on the top plate. Serial 10623 (Yonejima Satoshi)
Maintenance information: 2024.3.2 Maintained (timer relay installed (speaker will be turned on 5 seconds after power is turned on. (Please turn off the VOL when the power is on). Power SW bending correction (deformation of the knob itself is not compatible). Power stage Tr check (Replacement of Tr in the board, level VOL, fuse holder, and C in the power supply board)
Accessories: No accessories
Main specifications: T-type circuit adopted 100W+100W W432 ✕ H132 ✕ D355mm 19kg
The disposal price has been reduced. Member discounts are not applicable. 2023/6/12 sales price 49,800 yen ※1 mono amplifier only. The display lamp visible through the lattice is a transistor mono power amplifier with an indescribable design. As for the sound quality, it is a powerful sound with a sense of overhang while making you feel thick, and the low frequencies are not sluggish, making you listen to a pleasant sound. The exterior is dull all over, scratches on the top plate, etc., and there is a feeling of use (Kobayashi Hitoshi)
Maintenance information: 2023.6.13 Maintained (output relay contact correction input volume disassembly contact correction protection circuit transistor replacement input terminal polish)
Accessories: none
Main specifications: effective output 150 W, input level adjustment, SNR 110 dB, dimensions W436 x H95 x D328 mm, weight 11.5 kg/1 unit
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
Disposal price reduction. 2024/2/19 sales price 448,000 yen A large number of parts have been replaced due to internal deterioration! A stereo power amplifier with a traditional dual mono configuration. The overwhelming driving power and precise sound are attractive. The JBL4343 series is a classic combination, and the TANNOY Westminster makes you listen with plenty of volume by ringing the box. The exterior is scratched on the upper front, and there is a line scratch on the top plate (Mizusaki Ryo)
Maintenance information: 2024.2.19 Maintained (32 deteriorated capacitors, 10 relays, front LED lamp replacement. Solder has been fixed. Other inspections and adjustments have been made.)
Accessories: power cord, copy of instruction manual, balance short pin
Main specifications: stereo power amplifier, dual mono configuration, 200W+200W (8Ω), 800W (8Ω, when connected to a bridge), input impedance 50kΩ, W483 x H210 x D450mm, 40 kg
The price has been reduced. 2024/3/25 sales price 1,450,000 yen Macintosh mono power amplifier with creative design and high expressive ability. A balance circuit is configured with all signal paths from input to output. It is a valuable power amplifier with a sense of stability and weight with a sense of stability and weight with 600W of power, and the pressure released from its imposing appearance is a valuable power amplifier with a depth of pocket, from JBL of yesteryear to modern high-end speakers. The exterior is relatively good with only minor scratches (Hiura Katsuji)
Maintenance information: 2024.3.25 sound output confirmed
Accessories: instruction manual, power cable, original box
Main specifications: Rated output: mono 600W (2/4/8 Ω), total harmonic distortion ratio: 0.005% or less Speaker output: 1 system x 3 (1 for 2Ω, x1 for 4Ω, x1 for 8Ω) Input terminals: RCA x 1 system XLR x 1 system 445W x 240H x 559 Dmm 42.2 kg
The price has been drastically reduced. 2024/3/22 sales price 250,000 yen ※117V specification. Maintained! McIntosh's initial solid state power amplifier. The rich and powerful sound unique to vintage MacKins is full of appeal that is different from current models. When combined with the company's C26 preamp, you can enjoy the flavor unique to vintages that are even thicker and darker. There is a feeling of use such as scratches, rust, and slight panel peeling. Serial AH1163 (Takasaki Atsushi)
Maintenance information: 2024.3.21 maintenance (SP switch replacement, rubber foot installation, panel headphone peeling correction (other characters cannot be corrected) lamp replacement, power stage Tr, C, meter board pod replacement, SW, VOL cleaning)
Accessories: instruction manual (copy)
Main specifications: output 105 W+105 W (4/6/8 ohms) LR volume control speaker switch with headphone terminal W440 x H225 x D390 mm approx. 35 kg
The price has been drastically reduced! 2024/3/9 sales price 250,000 yen Maintained! AC100V specification MC2205 unmetered type. The intensity, driving power, and sense of attack are astonishing, just like the McKinn Sound in its heyday. It is the sound that jazz fans of yesteryear were looking for, and the sound combined with speakers such as the 4343 is exceptional. The exterior has rust spots, dullness, and line scratches. Serial AU3974 (Fujisawa Yukishi)
Maintenance Information: 2024.3.9 Maintained (AC100V specification. Each replacement solder was corrected due to output relays, electrolytic capacitors, and lamp defects and deterioration. Card edge contact cleaning volume and switch cleaning. (Bias and offset check output voice check OK.)
Accessories: none
Main specifications: output 200W+200W, 400W (mono) W407 x H177 x D372 mm 38.6 kg
Comes with original box Genuine fusion coordination. 120W A+D class stereo amplifier Furthermore, it is possible to operate as a 290W mono amplifier with a bridge amplifier. The goal is to achieve a tone unique to vacuum tube amplifiers, and it is designed with a more advanced even-order harmonic circuit. It is in good condition with no conspicuous damage (Oikawa Tetsuji)
Maintenance information: 2024.3.27 Operation confirmed
Accessories: instruction manual, power cable, original box
Main specifications: 120W (stereo), 290W (bridge) input impedance 47kΩ playback frequency band 10Hz-50kHz W235 x H55 x D276mm (including terminals and legs) 4.8 kg
Comes with original box Genuine fusion coordination. 120W A+D class stereo amplifier Furthermore, it is possible to operate as a 290W mono amplifier with a bridge amplifier. The goal is to achieve a tone unique to vacuum tube amplifiers, and it is designed with a more advanced even-order harmonic circuit. It is in good condition with no conspicuous damage (Oikawa Tetsuji)
Maintenance information: 2024.3.27 Operation confirmed
Accessories: instruction manual, power cable, original box
Main specifications: 120W (stereo), 290W (bridge) input impedance 47kΩ playback frequency band 10Hz-50kHz W235 x H55 x D276mm (including terminals and legs) 4.8 kg
Onkyo's 7ch digital power amplifier. Equipped with a unique digital amplifier technology VL digital. Pulsed noise, which can be said to be the source of digital amplifiers up until now, has been eradicated, and minute sounds that have been masked due to the effects of this noise have been faithfully reproduced, and abundant information expressiveness has been achieved. There are no noticeable scratches on the exterior (Sasaki Shota)
Maintenance information: 2024.3.23 Each input sound output operation has been confirmed
Accessories: power cable
Main specifications: rated output 120W x 7ch input RCA, XLR W435 x H175 x D452 mm 18.3 kg
The disposal price has been reduced! (Member prices are not applicable) 2024/3/22 sales price 128,000 yen Maintained! Quad power amplifier Despite its compact body, you can enjoy a smooth, thick sound. It really goes well with speakers made in England, and makes you listen to 70s analog sound with a sense of dynamism. The exterior has a feeling of use such as dullness. Serial 41000 (Tomoho Asaine)
Maintenance Information: 2024.3.22 Maintained! (Internal check DC cut C, gain setting C, etc., exchange Tr, etc. check operation check, DIN4P-RCA female cable creation)
Accessories: power cable
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
The disposal price has been reduced. Member discounts are not applicable. 2024/3/20 sales price 128,000 yen Maintained! Quad power amplifier. Despite its compact body, you can enjoy a smooth, thick sound. It really goes well with speakers made in England, and makes you listen to 70s analog sound with a sense of dynamism. You can see a feeling of use such as appearance, dullness, abrasions, scratches, stains, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.3.19 maintenance (DIN connector replacement, resistance in both other channels, capacitor replacement, each Tr all check)
Accessories: connection cable, power cable, instruction manual (copy)
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
Maintained! A classic British Quad stereo power amplifier. Small in size yet full torque. The sound, which is as deep as a tube amp, exudes an appeal that won't fade. There is a feeling of use such as dullness. Serial 3121 (Takasaki Atsushi)
Maintenance information: 2024.3.22 maintained (INPUT DIN4P and AC connector replacement, DIN4P-RCA x 2 (1m) creation, internal check, DC cut C, coupling C replacement, RCH offset VOL exchange, constant change in constant voltage circuit)
Accessories: copy of manual, power cord, connection cord
Main specifications: 45W+45W W120×H159×D324mm 8.2 kg
We've reduced the price! 2024/3/27 sales price 128,000 yen Maintained! Quad power amplifier Despite its compact body, you can enjoy a smooth, thick sound. It really goes well with speakers made in England, and makes you listen to 70s analog sound with a sense of dynamism. On the exterior, there are scuffs scattered on the top surface, and many other small scratches can be seen. Serial 22063 (Yonejima Satoshi)
Maintenance information: 2024.3.27 Maintained (INPUT DIN connector replaced, DW4P-RCA female cable created. Internal all-check, Lch power stage Tr x 3 large leak DC cut C, gain setting C off → replace. (No AC line fuse, installation, operation check)
Accessories: power cord, connection cord
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
The disposal price has been reduced. Member prices are not applicable. 2024/3/21 sales price 128,000 yen Maintained! Quad power amplifier Despite its compact body, you can enjoy a smooth, thick sound. It really goes well with speakers made in England, and makes you listen to 70s analog sound with a sense of dynamism. The exterior has a feeling of use appropriate for the model year, such as line scratches on the top plate, rubber footprints, and overall dullness (Mizusaki Ryo)
Maintenance information: 2024.3.21 maintained (internal Tn, C, R check, Tn OK, gain setting C, DC cut C, etc. → replacement, DINININPUT connector replacement, cable creation ~ operation check)
Accessories: power cord, connection cord, copy of instruction manual
Main specifications: 100W+100W frequency characteristics 20 to 20 kHz dimensions W341 x H115 x D195 mm weight 9 kg
The disposal price has been reduced (member discount is not applicable) 2023/11/22 is a model that plays a calm and glossy sound even though the sales price is 148,000 yen small. We recommend combining it with European speakers along with the company's Pre-44. A slightly more modern flavor than 405 has been added. There are small scratches and peeling paint (Oikawa Tetsuji)
Maintenance information: 2023.11.22 maintained (INPUT pin jack replacement, VOL cleaning. Gain settings for both other channels on the board. Replace the capacitor and DC cut capacitor. (Power stage, driver stage transistor check OK)
Accessories: power cable, copy of instruction manual
Main specifications: 100W+100W W341 x H115 x D195 mm 9.0 kg
The price has been reduced. 2024/3/2 sales price 99,800 yen Maintained! professional monitor amplifier It has strength unique to commercial use, and the driving power in the low range is truly remarkable. However, it also has a strong sense of temperature typical of a quad, so it is an amplifier that I would like people who are shunned when the sound is too straight for commercial use to try it once. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.3.2 maintained (internal dismantling all check, Tr, C, R check, ±B INPUT bypass C replacement, Tr, R, etc., all OK, INPUT photocoupler check, operation check)
Accessories: copy of instruction manual, power cord, dedicated SP cord (cable length 2.5 m)
Main specifications: 100W+100W (8Ω) W483 × H88 × D310 mm 12.5 kg
Maintained! A classic British Quad stereo power amplifier. Small in size yet full torque. The sound, which is as deep as a tube amp, exudes an appeal that won't fade. The exterior has a feeling of use over time, such as dullness and small scratches. Serial 62226 (Yonejima Satoshi)
Maintenance Information: 2024.3.25 Maintained (INPUT DIN 4P replacement, internal Tr, C, R all checks. DIN4P-RCA female cable created. Operation check, pattern solder processing)
Accessories: power cable, connection cable
Main specifications: 45W+45W W120×H159×D324mm 8.2 kg
The price has been drastically reduced. 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 (check capacitors, resistors, transistors, etc. as is OK. bias check)
Accessories: none
Main specifications: size (actual measurement) W406 x H155 x D327 mm weight (actual measurement) 12.2 kg
The price has been reduced. 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
※There are no operation confirmation issues, but since it is for business use, it will be handed over as is without warranty. Excellent heat dissipation performance due to the servo cooling system. It clearly brings out stable sound quality even when used continuously for a long period of time, and the sound source and pre are simply brought out. Overall, there is a feeling of use such as dirt and friction (Ryo Mizusaki)
Maintenance information: 2024.2.3 sound output confirmed
Accessories: none
Main specifications: 80 W+80 W (8 Ω continuous output) 110 W+110 W (4 Ω continuous output) 220 W (BTL 8 Ω continuous output) frequency characteristics 20 Hz to 20 kHz +0 -0.5 dB (at 4 Ω 1 W output) dimensions 480 x 102 x 394 mm
※There are no operation confirmation issues, but since it is for business use, it will be handed over as is without warranty. It is an attractive amplifier with a maximum output of 100W during 4-channel operation, and the strength unique to commercial use. There is a feeling of use such as scratches and dullness on the exterior as a whole (Ryo Mizusaki)
Maintenance information: 2024.2.3 sound output confirmed
Accessories: none
Main specifications: 80 W x 4 (8 Ω continuous output) 100 W x 4 (4 Ω continuous output) 200 W (BTL 8 Ω continuous output) W480 x H88 x D417 mm weight 12.5 kg
Maintained! Sansui's heavyweight power amplifier. It pursues the essence of a power amplifier, and I am particularly impressed by the strength of the low range and the growth in the high frequency range. Can also be used with large speakers. There are abrasions and bumps in places (Kojima Yosuke)
Maintenance information: 2024.3.22 maintained (4 power supply rectifier diodes, 4 fuse replacement protector transistors, 4 speaker relays, deterioration replacement, INPUT selector switch disassembly contact polishing power supply board, power amplifier board, etc.)
Accessories: copy of instruction manual
Main specifications: 110W+110W (8Ω) impedance 4-16Ω speaker output, 2 line input systems, balance compatible, W450 x H176 x D477 (mm) 35 kg
The price has been drastically reduced. 2023/11/26 Sales price 128,000 yen Maintained in 2022/6! An eye-catching power amplifier with its black and large power meter typical of Sansui. It entertains me with its power, which can be felt from its appearance, and its supple, stretchy sound quality. The exterior has dullness, scratches, rust, etc. over time (Oikawa Tetsuji)
Maintenance information: 2022.6.23 Maintained (both channel volumes replaced. SP relay bad contact replacement. Replace protectors, deteriorated transistors, resistors, and diodes in meter boards. Replace deteriorated transistors and resistors in the power supply board. Replace deteriorated transistors and capacitors in the drive board. OUTPUT selector switch cleaning. (General adjustment)
Accessories: none
Main specifications: left and right independent 2 power supply diamond differential circuit effective output 110W+110W (8Ω) load impedance 4 to 16 ohms W482 x H187 x D450 mm 20.3 kg
The price has been drastically reduced! 2024/3/8 sales price 99,800 yen Maintained! AC120V specification. The low frequency response is good, there is plenty of room above the housing, and I definitely want to listen closely to the mid to high frequencies. It is a power amplifier with an output stage configured using the TL (transconductance linearization) circuit system, which is patented by the company using MOS-FET. BTL connection is possible, and it can be used as a 400W monaural amplifier. The exterior has bumps, scratches, etc. Serial 3200716 (Fujisawa Yukishi)
Maintenance information: 2024.3.8 Maintained (all internal checks. C, R, TR, FET, etc. are OK. Operation test)
Accessories: power cable
Main Specifications: 120W+120W (8Ω) 200W+200W (4Ω) Input Impedance: 47kΩ Damping Factor: 500 W480 x H140 x D300 mm 14.0 kg