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
The disposal price has been reduced! Member prices are not applicable. 2024/2/21 sales price 69,800 yen ※Currently sold. professional power amplifier Dynamic sound with clear contours and momentum. The driving power that makes it easy to drive even large speakers at a high volume is attractive. It can also be used as mono power by connecting to a bridge. There are many scratches on the exterior, and there are some bends on the fins (Yonejima Satoshi)
Maintenance information: 2024.2.21 operation confirmed
Accessories: No accessories
Main specifications: 150W+150W (8Ω) 300W+300W (4Ω) input 2 systems (phone/XLR) W483 x H180 x D260 mm approx. 20 kg
The price has been reduced! 2024/3/13 sales price 99,800 yen Maintained! A Lax power amplifier that can be switched between Class A and Class AB, and is the first time in stock in a long time. A duo beta PlusX circuit is used as the amplifier circuit to achieve stable operation. You can enjoy a variety of things, such as the tasteful A grade and the excellent AB grade. Of course, Laxstone is alive and well in both modes. Externally, the cabinet is chipped or scratched. Serial I1501259 (Fujisawa Yukishi)
Maintenance information: 2024.3.13 Maintained (output relay replaced. Input volume decomposition correction. (Disassemble and clean panels)
Accessories: copy of instruction manual
Main specifications: 170W+170W (AB grade/8Ω) 40W+40W (A grade/8Ω) duo beta circuit plus X power supply circuit W478 × H214 × D484 mm 30 kg
Maintained! It is a model that can be said to be the flagship of Macintosh. The heavyweight frame, the refreshing blue meter, and the braking power to drive lightly even the large speakers, and the rich, rich tone are just perfect. The clarity of low frequency contours is the highest among all Mackins of all time. There are small scratches and dullness on the exterior. Serial JCS4793 (Yonejima Satoshi)
Maintenance information: 2024.3.16 Maintained (input VR, lamp, electrolytic capacitor and RCA jack replaced. Card edge contact cleaning. Mode SW disassembly polishing cleaning. Removes rust. Apply heat-resistant tape Bias and offset checks. Output audio check)
Accessories: instruction manual, power cable
Main specifications: 500W+500W (1000W when mono) equipped with power guard circuit W483 x D465 x H263 mm 60.3 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
※Since it is cheap, it will be handed over as is. A small digital amplifier with toppings. The desktop size allows you to enjoy it without worrying about the installation location. Although it is small, it also has driving power, and it sounds well even with low efficiency units. The exterior is dull. Serial 2110123017 (Tamura Eiji)
Maintenance information: 2024.3.15 Operation confirmed
Accessories: AC adapter, instruction manual, original box
Main specifications: 80W+80W (4Ω) W120 ✕ H40 ✕ D168mm weight 548g
Maintained! The balance between thickness and sharpness of the sound is good, and the sound conveys the breath of jazz and rock. The thick sound image and rich mid-range, which cannot be enjoyed with today's amplifiers, are exquisite. The range is moderate but the Old McKinn sound has instantaneous power. The slightly smokier tone than the MC2500 is attractive. Scratches and oxidation can be seen on the exterior. Serial 4Y316 (Yonejima Satoshi)
Maintenance information: 2024.3.12 Maintained (input volume, RCA jack, electrolytic capacitor, lamp, switch, semi-fixed VR, etc. replaced. Solder correction. Card edge contact cleaning Rotary switch cleaning. Increase and tighten the screws. Meter operation check. Bias and offset checks. Output audio check. (This is an AC120V model, but can be used with AC100V)
Accessories: power cord
Main specifications: 300W+300W (mono 600W) 0.5 to 16 ohms W483 x H267 x D432 mm 58.1 kg
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! 2024/3/8 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 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
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
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 price has been drastically reduced! 2024/2/29 sales price 450,000 yen Maintained! Genuine Electri 100V specification Macintosh's high-power amplifier with stereo output and 600W on one channel. Balanced inputs are also supported, and connections to high-end class balanced amplifiers are also being considered. It is characterized by a sound with plenty of room to resonate loudly rather than being as powerful as if power was pushed to the front. There are dirt and scuff marks on the exterior. Serial JFS1217 (Yonejima Satoshi)
Maintenance information: 2024.2.29 Maintained (meter lamps, electrolytic capacitors, reed relays, board supports, etc. replaced. Solder correction. Disassemble and clean the switch. Connector cleaning Removes adhesive marks from tape. Bias and offset checks. Output audio check)
Accessories: instruction manual, power cable
Main specifications: 600W+600W (stereo) 1200W (mono) W483 x H267 x D457 mm 59 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
The price has been drastically reduced. 2024/2/26 sales price 378,000 yen Maintained! Macintosh's flagship model. It is characterized by its strong, dense sound. The extrusion is strong and goes great with JBL large monitor speakers. The dynamism in the mid to low range, which is difficult to obtain with current Mackin power amplifiers, is attractive. There is a feeling of use due to aging (Daiki Goto)
Maintenance information: 2024.2.4 maintained (input board pattern correction)
2023.5.14/2024.2.6 Maintained (each replaced due to deterioration of input volume, indicator lamp, electrolytic capacitor, and RCA jack. Card edge contact and connector cleaning switch cleaning solder correction display part color filter reinstallation screw rust removal paint foreign matter removal. Bias and offset check output sound check The interior and exterior have been cleaned. Board correction. Corrections have been made with jumpers. )
Accessories: instruction manual, power cable
Main specifications: 500W+500W (1000W when mono) equipped with power guard circuit W483 x D465 x H263 mm 60.3 kg
Maintained! Professional series USA Marantz power amplifier. Equipped with an extremely powerful power supply unit, it is a heavyweight power amplifier that is unimaginable from its size. The powerful and close American sound is attractive. There are exterior, dullness, rust, small scratches, abrasions, etc. *The SP terminal, RCA terminal, and power supply have been changed to an inlet. Serial 30593 (Yonejima Satoshi)
Maintenance information: 2024.3.7 Maintained (power stage transistor check. In-board capacitors and Tr replacement. Pattern correction. Each VOL cleaning)
Accessories: power cable
Main specifications: 300W+300W (4Ω) 256W+256W (8Ω) W390 × H120 × D356mm 21 kg
The price has been drastically reduced! 2024/3/4 sales price 278,000 yen Maintained! KSA-80 balanced input compatible model. Unlike the rugged sound that comes from its appearance, the smooth feel typical of A grade makes a good impression. It is also strong and suitable for classical music. There are paint peeling, scratches, and bumps on the exterior. Serial 9943 (Fujisawa Yukishi)
Maintenance information: 2023.9.8 Maintained (diodes, transistors, and capacitors replaced. Solder correction. Reinstall the insulating plate and replace the resin screws. Resin washer replacement. Connector cleaning. Loosen the screws and tighten them. Bias and offset checks. Output audio check. (Interior and exterior cleaning)
Accessories: power cord
Main specifications: 80W x 80W (8Ω) pure A class amplifier, S/N ratio, 100dB, power consumption, 400W (8Ω load), balanced/unbalanced input, 1 system each, W585 x H223 x D538 mm, 37 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
※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
※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
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
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
Maintained in 2022/6! An eye-catching power amplifier with a black color typical of Sansui and a large power meter. You'll be entertained with its powerfulness that can be felt from the way it looks, and its supple, stretchy sound quality. The exterior has dullness, scratches, rust, etc. over time (Oikawa Tetsuji)
Maintenance information: 2022.6.23 maintenance completed (volume replacement for both channels. SP relay bad contact replacement. Protectors, deteriorated transistors in meter boards, resistors, diode replacement. Deteriorated transistors in power supply boards, resistors replaced. Replace deteriorated transistors and capacitors in the drive board. OUTPUT selector switch cleaning (Overall adjustment)
Accessories: none
Main specifications: left and right independent 2 power supply system diamond differential circuit effective output 110W+110W (8Ω) load impedance 4 to 16 ohms W482 x H187 x D450 mm 20.3 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