※Since it has poor loudness and balance, it is inexpensive and is sold as is. The pre-main amplifier with a simple design and tone typical of Yamaha has a clear sound, and it plays the source honestly. There are footprints on the top plate, small scratches, and dullness (Oikawa Tetsuji)
Maintenance information: 2024.3.24 Operation confirmed
Accessories: none
Main specifications: 105W x 105W (6Ω) W435 x H139 x D330 mm 9.0 kg
※It has a cigarette smell, so it's cheap. Currently sold. 115V specification A power amplifier that is supported by a heavyweight power transformer and reproduces tight low frequency reproduction with good visibility. It shows high cost performance that exceeds size and price. There are scratches on the exterior. Serial 2172380XCK00186 (Tamura Eiji)
Maintenance information: 2024.4.16 Operation confirmed
Accessories: none
Main specifications: 45W+45W (8Ω) 75W+75W (4Ω) W483 × H51 × D295mm 7.5 kg
※It has a cigarette smell, so it's cheap. Currently sold. 115V specification A power amplifier that is supported by a heavyweight power transformer and reproduces tight low frequency reproduction with good visibility. It shows high cost performance that exceeds size and price. There are scratches on the exterior. Serial 217380XCK00185 (Tamura Eiji)
Maintenance information: 2024.4.16 Operation confirmed
Accessories: none
Main specifications: 45W+45W (8Ω) 75W+75W (4Ω) W483 × H51 × D295mm 7.5 kg
*Currently sold. 120V specification. CROWN commercial power amplifier. It features driving power unique to professional use that lifts straight. The high braking power at high volume fully demonstrates the quality of a professional device. The exterior is dull. *There are no fixing brackets for mounting racks. Also, the AC plug has been replaced. Serial 8001294201 (Tamura Eiji)
Maintenance information: 2024.4.11 operation confirmed
Accessories: none
Main specifications: output 25W+25W (8Ω) 120V specification natural air cooling method W483 × H45 × D213 mm 4.5 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
※It has a cigarette smell, so it's cheap. Since it is 120V specification for commercial use, it will be handed over as is. A compact commercial power amplifier that is highly regarded as a professional studio monitor amplifier. The driving power that cannot be imagined from its size is truly the real thrill of a professional aircraft. The range is reasonable, but it is characterized by a sound image that does not lose sound even at high volumes. There are scratches on the exterior. Serial 8001337592 (Tamura Eiji)
Maintenance information: 2024.4.16 Operation confirmed
Accessories: none
Main specifications: 40W+40W (8Ω) W483 x H44.5 x D213 mm 4.5 kg
※It has a cigarette smell, so it's cheap. Currently sold. 115V specification A German stereo power amplifier with resolution and expressiveness not typical of commercial use. It is proud of its exhilarating sound and outstanding driving power that comes out quickly. The exterior has scratches and paint bald spots. Serial 2172380UGD01107 (Tamura Eiji)
Maintenance information: 2024.4.16 Operation confirmed
Accessories: none
Main specifications: 85W+85W (8Ω) 150W+150W (4Ω) W483 x H88 x D270 mm 11.5 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
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 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 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
The disposal price has been reduced! (Member discounts are not applicable) 2023/5/13 sales price 69,800 yen ※This is not a DC amplifier, so please connect the speaker cable before turning on the power when making sound. Maintained! 120V specification Dinaco's transistor stereo power amplifier was developed by utilizing technology obtained with tubular amplifiers in semiconductor circuits. You can enjoy intense, dynamic expression without requiring precise sound expression. You can see the exterior, dullness, corrosion, etc. depending on the age (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 at AC100V. (120V → OK)
Accessories: none
Accessories: none
Main specifications: 60W+60W W330 x H104 x D260 mm 8 kg
The disposal price has been reduced! (Member discounts are not applicable) 2024/3/12 sales price 69,800 yen 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
※Since it is a commercial device, it will be handed over as is. It's a very powerful sound unique to professional machines, and it pushes the sound forward and forward. Recommended for jazz and rock fans with large woofers. The exterior has scratches, bumps, etc. Serial JP01026 (Tamura Eiji)
Maintenance information: 2024.4.18 Operation confirmed
Accessories: none
Main specifications: 240W+240W (8Ω) 480W (16Ω MONO) with peak output meter W480 × D413 × H183 mm 20.5 kg
Rare amplifiers are in stock! Stereo power amplifier imported directly from Denmark. It is equipped with a B&O ICEPower200ASC that is also mounted on the JEFF ROWLAND Model 102. You can enjoy straight, high-resolution sound. As for the exterior, there are scratches and scuffs on the top plate. Serial 000913 (Fujisawa Yukishi)
Maintenance information: 2024.4.19 Operation confirmed
Accessories: power cord
Main specifications: 100W+100W (8Ω) impedance 3-16Ω W215 × H60 × D350 mm 3.5 kg