Maintained by the manufacturer! Marantz mid-range aircraft with high cost performance. The sound quality is clear and natural with little distortion. The expressive power of the mid range and the sense of volume in the bass range are rich, and you can enjoy a wide range of activities from rock to classical music. There are small scratches, dullness, etc. on the exterior. Serial 0100055100470 (Tomonori Asaine)
Maintenance information: 2025.1.16 Maintained (main VOL replaced. Speaker relay replacement. Disassemble and clean each push switch. RCA terminal cleaning Inspection of all parts. Operation test.)
Accessories: copy of the instruction manual, power cable, connection cable ※ remote control is not included
Main specifications: 70W+70W phono input 1 system (MM), line input, 5 lines, pre/power separation possible, WBT speaker terminal W440 x H128 x D364 mm 10.5 kg
A basic DENON stereo prime amplifier. The range is wide, and the glossy tone is attractive. It is an easy-to-use, well-balanced model that is suitable for both introductory use and secondary use. The exterior has dullness, small scratches, scuff marks, etc. ※The remote control is out of stock. Serial 6031550436 (Yonejima Satoshi)
Maintenance information: 2025.2.11 operation confirmed
Accessories: No accessories
Main specifications: 50W+50W (8Ω) phono (MM) 1 line input 5 system headphone terminal with pre-out W434 x H121 x D337 mm 7.1 kg
The price has been reduced! 2025/2/6 sales price 79,800 yen Maintained by Yukim! The slim exterior creates a smooth and relaxed sound quality. It is soft from high to low frequencies, has a nice texture, and is suitable for female vocals, etc. It makes medium and small speakers play elegantly. On the exterior, there are fine scratches on the spots and side plates. Serial 002686 (Fujisawa Yukishi)
Maintenance information: 2024.12.17 Maintained by the manufacturer (selector/VR cleaning, re-soldering of deteriorated solder parts, main unit cleaning)
Accessories: power cord
Main specifications: MOS FET single push-pull amplifier output 50W+50W (8Ω) W430 × H60 × D310 mm weight 4.9 kg
*Remote control is missing (VR adjustment with remote control is not possible due to VR replacement). Maintained! An advanced ESL series aircraft, a heavyweight premain with a high-rigidity G chassis. Equipped with a MOS FET, the sound is spacious and powerful. The exterior is dull and has small scratches (Ryo Mizusaki)
Maintenance information: 2024.6.21 maintained (mute push SW replacement, main VR replacement, other speaker relay deterioration replacement, all tact SW replacement due to poor INPUT switching SW contact, replacement with 120Ω, 100Ω deterioration, other sound direct SW disassembly contact polishing cleaning, speaker switching SW, stereo/mono switching SW, direct INPUT switching SW, direct INPUT switching SW, each disassembly contact polishing cleaning grease application, DC bias DC balance (Adjust, check the sound output for each input/output connection)
Accessories: copy of instruction manual
Main specifications: output 170W+170W (4Ω) 140W+140W (6Ω) 120W+120W (8Ω) W470 x H170 x D435 mm 24 kg
The price has been reduced! 2025/1/25 sales price 99,800 yen ※It is cheap because it is in poor condition. Maintained! This amplifier marked the end of the X series, which began with the AU-X1. It is a model with a weight of 35 kg and a solid investment in material volume. You can enjoy powerful Sansui sound with full torque. The exterior has age stains, dirt marks, back corrosion, etc. Side panel repair marks can also be seen. Serial 22104 (Yonejima Satoshi)
Maintenance Information: 2025.1.25 Maintained (fuse replaced. Long running test OK) 2024.12.21 Maintained (speaker terminal replacement. Switch dismantling and polishing (input selector, jump, subsonic, phono, power amplifier direct, speaker switching, reck-out). Main volume replacement. Power amp volume replacement. Equalizer section switching relay replacement, operational amplifier replacement. Output relay replacement. Power amplifier transistor, capacitor, and adjustment volume replacement. Imp selector lamp replacement. Protector IC adjustment. Solder repair, panel and other interior and exterior cleaning, pin jack polishing, adjustment inspection)
Accessories: No accessories
Main specifications: effective output 150W+150W (6Ω), 110W+110W (8Ω) dimensions W470 x H178 x D486 mm weight 35.1 kg
The disposal price has been reduced! (Member prices are not applicable) 2024/12/2 sales price 128,000 yen A pre-main amplifier that fully incorporates 1-bit amplifier technology. A 1-bit amplifier is a digital amplifier that converts an analog signal into a DSD signal and then amplifies the DSD signal as it is. Although it is a special amplifier, its accuracy and large amount of information set it apart from poor analog amplifiers and PWM digital amplifiers. Serial QJ1300 (Tomonori Asaine)
Maintenance information: 2024.12.2 operation confirmed
Accessories: instruction manual power cable
Main specifications: maximum output 17W+17W (8Ω), 25W+25W (4Ω) total harmonic distortion ratio (H mode) 0.05% (1kHz, 1W output) sampling 12MHz input sensitivity RCA: 0.4V, XLR: 0.8V total gain (4Ω load) RCA: 29dB XLR: 23dB dynamic range 100dB frequency characteristics 5Hz to 70kHz (±1dB) power supply voltage AC 100V 50Hz/60Hz Power consumption 25W size W420H80D360 weight 10kg
The price has been drastically reduced. 2024/10/23 sales price 89,800 yen ※There is a slight popping sound when the first protection is removed. The woofer moves a lot when the power is turned off, but this is a product specification. Designed with a complete dual mono configuration from the power transformer. The pre and power are also independently configured. The high range is sparkling, and the mid and low frequencies are thick, making it a profound sound. The exterior has dullness, threads, and scratches on the front (Ryo Mizusaki)
Maintenance information: 2024.5.31 Maintained (The battery was replaced and the board pattern was corrected due to liquid leakage in the function memory battery.
(Since the VR shaft is long, accuracy cannot be achieved, and stress is applied to the VR, so the extension shaft flexible joint Assy was replaced)
Accessories: remote control, instruction manual, power cord
Main specifications: effective output 85W+85W (8Ω) 170W+170W (4Ω) input: unbalanced (RCA) x 6 systems (1 system is PHONO: MM/MC compatible, 1 is TAPE) outer dimensions W440 mm x H95 mm x D400 mm weight 13 kg
The disposal price has been reduced. Member prices are not applicable. 2024/12/28 sales price 59,800 yen ※Remote control missing The thin, simple, and high-quality pre-main amplifier speaker features high driving power and shaded sound quality. There is a small scratch on the back (Kojima Yosuke)
Accessories: power cable
Main specifications: 80W+80W RCA6 XLR1 system W450H115×D382mm 11.1 kg
The price has been reduced. 2024/12/19 sales price 118,000 yen Details such as transistor replacement, switch and volume disassembly, contact polishing, etc. have been maintained! Famous aircraft of yesteryear. It is a familiar thick, mild luxe tone with an attractive sense of stability in the mid to low range. Perfect for acoustics and female vocals! The exterior is smelly, and there are scuffs and bumps in places (Wang Zhan)
Maintenance information: 2024.12.19 Maintained (switch and volume class disassembly contact polishing. Replacing deteriorated transistors in power supply circuits. (I/O pin jack polish)
Accessories: copy of instruction manual
Main specifications: 80W+80W (8Ω) phono 2 systems (MM) line 3 systems W485 x H165 x D300 mm 15.5 kg
The price has been drastically reduced. 2025/1/14 sales price 128,000 yen line exclusive premain amplifier. It is a model that omits both the headphone terminal and the remote control, and has thoroughly implemented simple is best. After all, the middle range is thick and the high range is smooth, lax sound. The supple tone gives a sense of security, and the warmth similar to vacuum tube amplifiers is attractive. There are small scratches on the exterior cabinet, and the metal fittings on the top plate are deformed and rattling (Oikawa Tetsuji)
Maintenance information: 2025.1.7 operation confirmed
Accessories: instruction manual
Main specifications: 50W+50W (8Ω) W438 × H155 × D446mm 23.0 kg
Maintenance has been completed such as disassembly contact polishing for each SW class! Onkyo's unique supercurrent amplifier configuration is used for the power section, and the smooth sound is impressive with a circuit that combines a MOS FET and a bipolar transistor. The sense of power in the low frequencies and the extension in the high frequencies play a slightly different sound from the others. Serial 6110010627. The exterior has small scratches, dullness, and a feeling of use (Katsuji Hiura)
Maintenance information: 2025.1.18 maintained (INPUT selector (motor life) SW, source direct SW, Cartrich MM/ MCSW, speaker SW, REC selector SW, polishing grease UP for each disassembly contact, replacement of other speaker relays, partial crack solder repair for each board solder crack, DC idling adjustment, input/output connection sound confirmation)
Accessories: none
Main specifications: 80W+80W (8Ω) W455 × H170 × D430 mm 17 kg
Maintained! Standard ES Primain model released in 1986. It is also equipped with a cartridge load selector, making it a perfect car for those who want to use it in a wide range of ways. The sound has momentum and sharpness is attractive. As for the exterior, there are many minor scratches and dullness over time, and side wood is missing. Serial 235075 (Yamato Yuki)
Maintenance information: 2025.1.9 maintained (volume volume balance volume replacement for sound other speaker relay deterioration replacement other 14 locations replacement for internal board resistance deterioration, etc., headphone relay disassembly and cleaning MUTING switch, SUBSONIC SW source direct SW, INPUT selector SW, speaker SW, Cartrich LOADSW, RECOUTSW, MODESW disassembly contact polishing grease (Application DC balance DC bias adjustment, check sound output for each input/output connection)
Accessories: copy of instruction manual
Main specifications: 105W+105W (8Ω) phono input mm/MC compatible dimensions W470 x H161 x D436 mm weight 18.6 kg
The price has been reduced. 2024/10/9 sales price 69,800 yen In addition to the custom-made Alps balance volume replacement, all switches and volume contacts have been polished and thoroughly maintained! A pre-main amplifier equipped with Kenwood's unique dynamic linear drive circuit. It's a tight, powerful sound in the mid and low frequencies. The sound is resilient, and the sound of wood bass etc. can be heard comfortably. There are small wounds and dullness (Daiki Goto)
Maintenance information: 2024.10.9 maintained (balance VR sharp replacement, speaker relay deterioration replacement, PHNO1/2 switching SW, Phonomm/MC switching SW, MODESW, toneon/offsw, SUBSSONIC filter SW, (push SW mini) replacement
AUX front/rear (large push SW) replacement, other RECOUT multiple SW, speaker switching multiple SW, PHONO relay SW, application of polishing grease to each contact, other idling, offset adjustment, connection sound confirmation.)
Accessories: none
Main specifications: 150W+150W (8Ω) PHONO (MM/MC) sigma drive system W440 x H158 x D383 mm 15 kg
The A-10 Type3 has been refreshed by carefully disassembling, cleaning, and internally deteriorated parts. The high-quality texture from the 2nd generation remains the same, and even more power has been added. The excellent sense of volume in the mid and low frequencies and the sharp mid to high frequencies are comfortable, and the energetic sound is still full of appeal. There are injuries and dullness (Sasaki Shota)
Maintenance information: 2024.12.20 Maintained (The position of the rotor fixing washer at the end of the interior was corrected after disassembling the volume. All input/output terminal functions have been confirmed) 2024.10.23 maintained (the circuit will be changed for LED lighting and constants will be changed.
After removing all rotary switches, the stator is cleaned, polished, and treated to prevent tampering. After disassembling the speaker protection output relay, we will polish and clean the contacts. We will fix solder cracks on all substrates. (Idle current will be adjusted)
Accessories: copy of the manual
Main specifications: 60+60W (8Ω) line input, 3 systems, tape system, 2 systems, phono 1 system, W430 x H150 x D430 mm, 25 kg
Full maintenance from capacitor replacement to re-soldering of each board, etc.! The first memorable luxury model in the Sansui 07 series in the era when there was no 907. Starting with the newly developed dual FET at the time, the company's consistent commitment to adopting quadruple detent volumes and large power transformers independently on the left and right has already been established. Compared to models from the 80s and 90s, the sense of fulfillment in the phono section is amazing. There are scratches, dirt, etc. on the exterior. Serial 218070746 (Tamura Eiji)
Maintenance information: 2024.12.19 Maintained (Earth pattern correction for left chVol. There are no inspection problems with other parts. (Check the input/output waveform, check the left-right balance, load test, and comprehensive operation test to confirm normal operation.) 2024.4.16 Maintained (capacitor, semi-fixed resistor, transistor, resistor, protection relay SP terminal, heat dissipation sheet replacement. SW type terminal cleaning, contact grease coating. Re-solder flux cleaning for each board. Each circuit adjustment, RCA terminals, interior and exterior cleaning. (Various tests)
Accessories: No accessories
Main specifications: 85W+85W W430 x H168 x D389 mm 16.8 kg
Transistors, capacitors have been replaced, slide volume dismantled and cleaned, etc. have been maintained! More than 50 years have passed since the release of Sony's vintage pre-main. The innocent tone doesn't make you feel stressed is good, and the balance from treble to bass is good, and the tone control response is good. The retro-futuristic design also makes a good impression. *This unit does not use a speaker protection relay, so it may make an abnormal noise when the power is turned on and off, but this is a specification. There is a scratch on the cabinet on the exterior (Oikawa Tetsuji)
Maintenance information: 2024.12.18 Maintained (replacement due to defective transistors, replacement of capacitors, etc. in flat amplifiers, replacement of equalizer circuit capacitors, slide domain VR disassembly and cleaning, disassembly and cleaning of FUNCTION switches, etc.)
2024.6.13 Maintained (board repair due to poor contact within the TONE board, replaced 4 transistors with PHONO noise, replaced with semi-fixed VR adjustments due to unstable idling voltages, repaired contacts with poor contact at each push SW contact, and disassembled and cleaned volume slide VR.)
Accessories: none
Main specifications: 35W+35W (8Ω) input sensitivity/impedance Phono 1.2mV/47kΩ Phono 2 system Tuner 1 system AUX 2 system Tape 2 system AC100V, 50 Hz/60 Hz 100 W 400 x H149 x D316mm weight 9.8 kg
The price has been reduced. 2024/4/2 sales price 79,800 yen Maintained! Pre-main amplifier with built-in DA converter. An amplifier that allows you to enjoy a gentle, expansive sound like Denon with analog input, and sound quality with a wide range with digital input. It is an amplifier that can also be recommended as an amplifier to be combined with PC audio (Daiki Goto)
Maintenance information: 2024.2.21 maintained (function, recout, digital input, speaker, tape, loudness switch disassembly, polishing grease application, output relay replacement, bus volume replacement, solder repair, various volumes, switch cleaning, interior and exterior inspection and cleaning, digital input/output confirmation, operation confirmation. (*Since the bus volume is similar, the bus lifts slightly when the source is directly off)
Accessories: none
Main specifications: 110W+110W (8Ω) phono (MM/MC switching) 5 digital input systems (coaxial x 3/optical x 2) W434 x H180 x D420 mm 18 kg released in 1989 (Kojima Yosuke)