A super-grade amplifier made with the aim of ultimate music playback. It has a thick mid-low range that does not shake even if the volume is raised or reduced slightly. In addition to the potential of a rated output of 300W+300W, the sound is also delicate, and the moist JAZZ etc. also make it sound glossy. The lid of the knob under the meter is difficult to open. Small scratches, there are several places where veneer peeling off on the side wood (Yoichi Murakoshi)
Maintenance information: 2022.6.30 Sound output confirmed
Accessories: none
Main specifications: Output 300W+300W External dimensions W507 × H264 × D512 mm Weight 63 kg
A super-grade amplifier made with the aim of ultimate music playback. It has a thick mid-low range that does not shake even if the volume is raised or reduced slightly. In addition to the potential of a rated output of 300W+300W, the sound is also delicate, and the moist JAZZ etc. also make it sound glossy. Small scratches, there are several places where veneer peeling off on the side wood (Yoichi Murakoshi)
Maintenance information: 2022.6.30 Sound output confirmed
Accessories: none
Main specifications: Output 300W+300W External dimensions W507 × H264 × D512 mm Weight 63 kg
Super grade amplifier made for the ultimate music playback. It has a thick medium and low range that does not shake even if you increase the volume or make it small. In addition to the potential of rated output 300W+300W, the sound also has a delicacy and moist JAZZ sound glossy. The power cable has been changed during maintenance in 2017. There are some abrasions on the top plate (Oikawa Tetsuji)
Maintenance Information: 2017/5/10 Maintained (Power transistor, IC, fuse, relay, power cable replacement. (Idling current readjustment, substrate solder correction.)
Accessories: catalog, repair statement
Main specifications: Output 300W+300W External dimensions W507 × H264 × D512 mm Weight 63kg
The price has been drastically reduced! 2023/5/17 sales price 168,000 yen A discrete twin-mono structure that uses “A-WRAT,” which aims to expand the playback frequency band. It is a performance with the driving power of Hyundai ONKYO that achieves both transparency and strength. BTL connections between 2 units of the same unit are also supported. There are no noticeable scratches on the exterior. Serial 3236JJD4Y0020724E (Kimiya Miura)
Maintenance information: 2023.5.17 operation confirmed
Accessories: instruction manual, power cable, original box
Main specifications: rated output 2ch stereo 80W+80W (8Ω) 150W+150W (4Ω) BTL mono 180W (8Ω) 220W (6Ω) total strain ratio 0.02% S/N ratio 110dB dimensions W435 x H187.5 x D432.5 mm weight 23.5 kg
Maintenance has been completed! Onkyo's M-588, which will be in stock for the first time in a long time, has arrived. Equipped with a super balance circuit. The sense of density in the middle tones typical of Onkyo is alive and well, and it makes a natural sound with good hardness. Scratches are scattered on the side panels and top plate. Serial 6205010123 (Itsuro Mizushima)
Maintenance information: 2022.8.21 maintenance (main amplifier circuit part AB output relay replacement, LR power amplifier board solder repair, input selector disassembly polishing grease application, volume cleaning, (Meter lamp replacement, meter switching check, operation check.)
Accessories: none
Main specifications: 200W+200W super balance circuit equipped with 2 input terminals (balanced/unbalanced) W475 × D426 × H190 mm 31 kg
Disposal prices have been reduced (member prices are not applicable)! 2023/11/23 Sales price 158,000 yen A discrete twin mono structure that uses “A-WRAT,” which aims to widen the playback frequency band. It is a performance with the driving power of Hyundai ONKYO that combines transparency and strength. BTL connections with 2 identical devices are also supported. The exterior has multiple small scratches and dullness (Sasaki Shota)
Maintenance information: Operation confirmed on 2023.11.23
Accessories: power cable
Main specifications: rated output 2 channel stereo 80W+80W (8Ω) 150W+150W (4Ω) BTL mono 180W (8Ω) 220W (6Ω) overall distortion ratio 0.02% S/N ratio 110dB dimensions W435 x H187.5 x D432.5 mm weight 23.5 kg
Drastic price cuts. 2022/7/18 selling price 150,000 yen. Collaboration between Balanced Audio Technology (BAT), one of the leading high-end audio manufacturers in the United States, and ONKYO! BAT is in charge of the amplifier circuit with the same structure for all 7 channels, and ONKYO is in charge of the skeleton and power supply part, and the 7ch amplifier with a completely independent module configuration is skillfully packaged. In addition, due to the exquisite sound quality tuning by both companies, the sense of sound elongation over the entire area is clear. There is a feeling of use such as appearance, dullness, etc. (Hitoshi Kobayashi)
Maintenance information: 2022.7.18 Operation confirmed
Accessories: none
Main specifications: Rated output (4ω/1kHz/ 0.1% THD) front 300W+300W, center 300W, surround 300W+300W, surround back 300W+300W (8ω/20Hz ~ 20kHz/ 0.1% THD) Front 150W+150W, Center 150W, Surround 150W+150W, Surround Back 150W+150W, Total Harmonic Distortion Ratio 0.03% or Less (20 ~ 20kHz), input sensitivity/impedance 100mVrms (unbalanced) 200mVrms (balanced) frequency characteristic 3.5Hz to 250kHz, +0dB/-3dB, external dimensions W450× H195 × D602 mm 52.5 kg
A 7CH power amplifier created through collaboration between Balanced Audio Technology (BAT) in the United States and ONTOKYO. ONKYO manufactured the housing and power supply unit, and BAT manufactured the circuit part, and a power amplifier like no other was born. Of course I recommend it to ONKYO fans, but I definitely want you to enjoy the sound of BAT, which has a reputation for fidelity and accuracy in music playback. Small bruises are scattered throughout (Goto Daiki)
Maintenance information: 2022.11.16 operation confirmed
Accessories: instruction manual, power cable
Main specifications: W450 x D596 x H195 (mm) weight 51 kg frequency characteristics 3.5 to 250 kHz, -3db power supply used AC100V, 50/60 Hz power consumption 1000 W THX® Ultra certified, THX surround EX compatible (7 channels)
Maintained! An impressive power amplifier with a large VU meter. Pursue a real phase amplifier configuration that reproduces accurate phase and sound fields. The high sense of transparency is attractive with stable driving power supported by a strong power supply and a neutral tone. As for the exterior, there are dullness and abrasions on the top plate and top of the side panels. Serial 19Y0914765 (Kanai Hidetsugu)
Maintenance information: 2023.6.20 Maintained (output relay replacement, meter lamp (green during operation) replacement, power amplifier circuit repair due to solder deterioration,
Volume, switch cleaning, meter and other internal cleaning checks, exterior cleaning, each input test, operation confirmation.)
Accessories: copy of instruction manual
Main specifications: 200W+200W (8Ω) real phase amplifier method W465 × H187 × D426 mm 25 kg
A power amplifier with an impressive large VU meter. Pursuing a real phase amplifier configuration that reproduces accurate phases and sound fields. Stable drive power supported by a powerful power supply and neutral tone are attractive with high transparency. There are thin line scratches on the sidewood, other threaded dullness ※ The meter lamp has been changed to an LED lamp (Shota Sasaki)
Maintenance information: 2021.11.19 Maintenance completed (There are many solder cracks in the output board, all board solder has been repaired, other speaker relay deterioration 3 places are replaced, other connection sound running test We will do it (The meter lamp has been changed to an LED lamp, so I will leave it as it is without replacing the lamp.)
Accessories: None
Main specifications: 200W+200W (8Ω) real phase amplifier system W465 × H187 × D426mm 25kg
The price has been reduced! 2022/3/9 Sales price 99,800 yen Maintained! A power amplifier with an impressive large VU meter. A real phase amplifier configuration that reproduces accurate phase and sound fields is pursued. It has a stable drive power supported by a powerful power supply unit, and a neutral tone, and a high sense of transparency. The appearance has dullness, scratches, and paint deterioration. Serial 3804001859 (Miura Kimiya)
Maintenance information: 2022.3.9 Maintenance completed (due to poor front switch sticking contact, cleaning, meter, power board solder repair, standby lamp replacement, volume cleaning, (Internal inspection cleaning, output operation check, running test)
Accessories: Copy of instruction manual
Main specifications: 200W+200W (8Ω) real phase amplifier system W465 × H187 × D426mm 25kg