Electrolytic capacitors and film capacitors were replaced in 2024/2, and full maintenance has been completed! A separate amplifier that is still popular even now, 70 years after its release. The thickness, luster, and tension of the sound are all emotionally composed, and perfectly express the sound of the instrument. Anyway, it has thick, firm mid-bass, and the tasteful sound unique to vacuum tubes is impressive. There is a scratch on the top plate of the preamp. Serial 42710 (Takahashi Nobuyuki)
Maintenance information: 2025.3.23 maintained (blue AC cord plug and socket disassembly and rewiring procedure, etc. Operation checked with AC 100 to 117 V (SP impedance: 16 ohm wiring)) 2024.2.17 maintained (electrolytic capacitor replaced with 25 μF European 1 x 2 · film capacitor 0.1 μF replaced with European product 3 x 2 · resistor 1/2W → 1W replaced 3 x 2 · vacuum tube socket caulking repair. Replace with a product similar to No. 57078 vacuum tube socket. QUAD22 · Internal Toggle Switch Contact Failure Replacement · Spark Killer Deterioration Replacement 2 pcs · Film Capacitors 0.5 μF and others Deterioration Replacement 8 pcs · Electrolytic Capacitors Replaced with European Products · 6 Resistors 1W and 1/2W Deterioration Replacements · CD Input Reduction Measures for Radio1 Only → 1/4 W Resistance Added 4 · RCA Jack Caulking Repair. Other operation checked (measured at 11 to 17 W SP: 16 Ω with rated output AC 100 to 117 V) *The P/U adapter is an AA type. (Please use the black terminal when listening in mono)
Accessories: Power cable instruction manual banana plug AT6302
Main specifications: 11-17W (16Ω) [QUAD22] EF86 × 2 ECC83 × 2 input PHONO, RADIO, TAPE W267 × H89 × D148 mm 3.2 kg [QUAD2] KT66 × 4 EF86 × 2 GZ32 15W+15W W321 × H162 × D119 mm 8.2 kg/unit
Marantz Primain mid-size model with excellent cost balance. It features high pitch and subtlety, and you can listen to smooth sound quality with little noise even at low volumes. This is an all-round premain amplifier regardless of music genre. There are scratches on the exterior. Serial A1011130001058 (Yonejima Satoshi)
Maintenance information: 2025.3.23 Operation confirmed
Accessories: remote control, instruction manual, power cord, connection cord
Main specifications: 70W+70W (8Ω) phono input (MM) line input 3 systems W440 × H130 × D379 mm 12.2 kg
Everything from replacing 32 transistors, 54 capacitors, and 4 resistors to board re-soldering has been refreshed! 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. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.2.15 Maintenance completed (power lamp converted to LED. Replace transistors, capacitors, fuses, heat dissipation sheets, ICs, relays, resistors, semi-fixed resistors, RCA terminals, and SP terminals. Resolder substrates. Switch, relay, and VR contact cleaning. (Circuit adjustment, exterior cleaning, confirmation of each input/output, running test)
Accessories: copy of instruction 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
Maintained! A late Sansui premain amplifier. It is a model where you can fully enjoy the powerful and delicate sound of SANSUI. Although it has a high output, it has a structure where vibrations are not transmitted to the chassis, and it is characterized by a medium to high range with high transparency like a MOS FET. It is a pre-main with a high degree of perfection that fully satisfies not only jazz and rock, but also vocals and classical music. The exterior is dull and has a feeling of use, etc. Serial 609100026 (Asaine Tomoho)
Maintenance Information: 2025.3.22 Maintained (Master Volume Dismantling and Cleaning Switch Disassembly and Polishing (Processor Input Selector Power Amplifier Direct Recout MM/MC Switch Push Switch Replacement (Tone Speaker Subsonic Loudness) Power Supply Part Power Amplifier Part Other Solder Repair Other Volume Cleaning Output Relay Headphone Relay Replacement Interior and Exterior Inspection Cleaning Operation Confirmation)
Accessories: instruction manual
Main specifications: Ultimate α-x balance circuit Phono (MM/MC switching) with input 160W+160W (8Ω) W462 x H165 x D448 mm 33 kg
Maintained. The successor that inherited the sound of the D series. A model where you can feel the uniqueness of Sansui at the time due to the extrusion of low frequencies and the creation of sound. They are energetic, playable, and go great with jazz and rock, and the phono is compatible not only with MM but also with MC, making it great for analog fans. There is a feeling of use such as peeling, chipping, and abrasions on the decorative sheet, and the smell of tobacco remains. Serial 822091435 (Mizushima Itsuro)
Maintenance information: 2025.3.21 maintenance completed (main volume dismantling and cleaning, TREBLR/BASS/BALANCE volume replacement, switch disassembly and polishing (input selector, readout tone, subsonic muting tape tape 1, 2), output relay replacement, power supply floating resistor replacement, Mylar capacitor replacement, main amplifier transistor capacitor replacement, solder repair, and other pins Jack polishing, interior and exterior inspection cleaning, adjustment inspection)
Accessories: copy of instruction manual
Main specifications: execution output 80W+80W (8Ω) damping factor 100 rated power consumption 200W phono MM/MC compatible W460 x H160 x D404 mm weight 13.2 kg
Maintained by Marantz Service! You can enjoy the glossy tone of the mid to high range, and the low frequency with instantaneous power, and a clean sound without any habit. This is an excellent amplifier that allows you to enjoy a wide range of music regardless of genre. There are small scratches and a feeling of use (Sasaki Shota)
Maintenance information: 2025.3.2 Maintained by the manufacturer (replacement of resistors in the power supply base. LUMP exchange SP relay replacement. Mechanical push SW disassembly cleaning. Amplifier base and other soldering fixes. idling adjustment. RCA terminal and GND terminal cleaning. Remote control check OK. (Inspection of each part, operation test)
Accessories: remote control, manual
Main specifications: 150W+150W (4Ω) 120W+120W (6Ω) W458 × H167 × D474 mm 20 kg
Compact EL34 single amplifier. Line-only, and inputs can be switched with the buttons on the back. Comes with a JEMOSA Convert Tube Socket that can use 12AX7 on the 6N2 socket section (Murakoshi Yoichi)
Maintenance information: 2025.3.15 sound output confirmed
Accessories: 12AX7 to 6N2 conversion socket, power cable
Main specifications: 6W+6W EL34 single input 2-system vacuum tube 6N2-J, 12AX7, JJ 6CA7 W351 x H414 x D264 mm 12.6 kg
※There are noticeable cracks, repair marks, and chips on the decorative panel. Maintained! Following the technology at the time of development of the advanced C-2302, a balanced configuration was adopted for the advanced α-X circuit and power supply unit. The sense of strength and driving power of the highest class as a premain is attractive. The exterior has scratches, repair marks, and cracks on the decorative panels. Serial 622093718 (Fujisawa Yukishi)
Maintenance information: 2024.3.24 Maintained (Mayi amplifier circuit transistor, diode replacement. Adjust volume, replace output relay. Hendphone relay replacement. Power supply transistor replacement. Disassemble the input selector and other switches and apply polishing grease (turnover, tone, muting, loudness, subsonic, processor, MM/MC switching, power amplifier direct, source direct, reck-out, tape). Solder repair. Each volume, switch cleaning. Internal inspection and cleaning. Mounting screw rust remover. Bias, DC adjustment, operation confirmation. (Decorative panel repair)
Accessories: No accessories
Main specifications: 160W+160W (8Ω) 190W+190W (6Ω) phono equipped with advanced α-x balance circuit (MM/MC switching) dimensions W460 x H161 x D446 mm weight 33 kg
※Since it is cheap, it is a gift as is. Although it is an entry model, this HiFi pre-main amplifier is infused with technical power to fully express the overall picture of music. It doesn't have the power to be powerful, but it's loud enough for easy listening. The sound quality is gentle and soft. The exterior has a feeling of use such as dullness and small scratches. Serial Y233275SU (Takahashi Nobuyuki)
Maintenance information: 2025.3.21 operation confirmed
Accessories: none
Main specifications: rated output 70W+70W size W435 x H151 x D391 mm weight 8.7 kg
The disposal price has been reduced! Member prices are not applicable. 2025/3/15 sales price 148,000 yen Maintained! This is the Accuphase sound from the time when the high frequency range was good. The sense of power in the low frequencies is sufficient, and it drives both JAZZ and ROCK systems powerfully. A combination with the JBL 4312 series is recommended. There are threads and line scratches on the exterior. Serial H2X715 (Tamura Eiji)
Maintenance information: 2025.3.15 Maintained (since the volume is exhausted and there is no replacement, it was replaced with a good used one. Switch replacement and contact cleaning. Voice check for each input/output) 2023.3.31 Maintained (output and input relay tone volume (no replacement click), push switch, and electrolytic capacitor replaced. Other switches and volume cleaning. Solder correction. Connector disconnection fixed. Bias and offset checks. Input/output audio check. (Interior and exterior cleaning)
Accessories: power cable
Main specifications: PHONO input, pre-main separable, 110W+110W (8Ω) W445 x H160 x D370 mm 17.2 kg
A transistor type premain amplifier reminiscent of the Laxman of yesteryear. The loose, warm-colored lackstones remain the same, and you can feel the sharpness typical of a modern aircraft. It is MM/MC compatible, and is compatible with analog, and its good quality shines through even though it is simple. There are no noticeable scratches on the exterior. Serial 620700171A (Takahashi Nobuyuki)
Maintenance information: 2025.3.17 Operation confirmed
Accessories: instruction manual, remote control, power cable, original box
Main specifications: output 50W+50W (8Ω), 75W+75W (4Ω) W402 x H169 x D330 mm 15.0 kg
The price has been reduced. 2025/3/18 sales price 268,000 yen MODE switch disassembly contact polishing. Maintained including BASS/TREBLE/BALANCE volume replacement. While inheriting smooth, sweet, and heavy lackstones, it has acquired a wide modern high frequency range. The rich, vacuum-tube-like sound in the mid to low range is also an attractive unit. It is also equipped with an MM/MC compatible phono equalizer, perfect for analog users. There is a crack in the back corner cabinet, and there are small scratches overall (Oikawa Tetsuji)
Maintenance information: 2025.3.18 Maintained (MODE switch disassembly contact polishing. BASS/TREBLE/BALANCE volume exchange Bad output relay contact replacement. Soldering fixes for each board. I/O pin jack polish (Long time sound output operation check)
Accessories: instruction manual, power cable
Main specifications: output 160W+160W (8Ω) 240W+240W (4Ω) phono MM/MC switching line input 4 systems balance input 2 systems REC input/output 2 systems dimensions W467 x H179 x D440 mm weight 22 kg
The top model of the premain amplifier launched by AccuPhase to commemorate its 40th anniversary. Uses AAVA volume. The power amplifier section with pure Class A operation is designed to be resistant to changes in the surrounding environment. An overwhelming amount of information filled with a sense of silence and scale. It's the ultimate premain with a high degree of perfection. There is a slight feeling of use on the exterior, such as small dents on the front panel and dullness on the top plate (Mizusaki Ryo)
Maintenance information: 2025.3.20 Operation confirmed
Accessories: remote control, instruction manual, power cord, original box
Main specifications: 30W+30W (8Ω), 60W+60W (4Ω) frequency characteristics 20Hz to 20kHz input terminals/balance (XLR) x 2 systems, unbalance (RCA) x 5 systems. Up to 2 option boards can be added to the rear panel W465 x H191 x D428 mm 24.7 kg
Each part has been maintained, such as de-polishing, cleaning, etc.! Lux vintage premain amp. Although it has a thin body, it is a soft and smooth lux stone. Even in the low frequencies, it has more power than its size, and it makes you hear a sound that is firm in your lower back. There are scratches and bumps on the exterior. Serial K8504738 (Fujisawa Yukishi)
Maintenance information: 2025.3.20 maintained (STEREO switching SW, INPUT switching SW, TONE direct SW, TONE COMPENSATOR SW, subsonic SW, TAPESW1, TAPESW2, monitor SW, polishing and cleaning grease application, TONE VR x 2 cleaning, balance VR replacement, SW main unit replacement due to power push SW knob shaft deformation, speaker relay replacement, (Replace 4 power drive circuit transistors)
Accessories: No accessories
Main specifications: 55W+55W left and right independent power supply system using toroidal power transformer DC amplifier configuration W438 x H78 x D363 mm 10.5 kg
Maintenance has been completed, including meter panel dismantling and cleaning! Macintosh premium premain amplifier. Of course, it has a thick mid-low range with excellent driving power from the past, but it also acquires a wide range and sense of transparency typical of modern models. You can also relax and enjoy vocals and classical music. Tall boy speakers from recent years also make a thick sound. Serial JTN4183 (Tomonori Asaine)
Maintenance information: 2025.3.20 maintained (each SW, VOL cleaning (there is a little bit of dirt left), only rust removal in the remote control box, glass panel dismantling meter fog cleaning power supply transformer, chassis cleaning correction characters erased, fixed with black tape, lamp replacement regulator part C is OK operation check)
Accessories: remote control manual, power cord, original box
Main specifications: 200W+200W (8Ω/4Ω/2 Ω), 6 line inputs, pre/bower separable, 5-band equalizer control (30Hz/150Hz/500Hz/1,500Hz/10kHz) W444 x H193 x D476 mm 33.8 kg
This is a small TEAC premain amplifier equipped with a variety of digital inputs. It's a desktop size that doesn't take up much space, and it's the perfect size for those who want to enjoy music casually. There are no noticeable scratches on the exterior. Serial 22Y0825 (Tamura Eiji)
Maintenance information: 2025.3.19 Operation confirmed
Accessories: instruction manual, remote control, power cable
Main specifications: 25W+25W (8Ω) SNR 100dB frequency characteristics 2Hz to 70kHz W215 ✕ H61 ✕ D257mm weight 2.3 kg
This is a product that has been carefully maintained, such as processing and replacement of all 26 input/output pin jacks, thorough dismantling and polishing of the volume and switches! This model was designed in the late 80s with serious awareness of being compatible with the digital age. The gentle mid-high range and tight bass are attractive, and it is also recommended for use as an introduction to separation. There is dullness due to aging (Daiki Goto)
Maintenance information: 2025.3.19 maintained (maintenance contents/ ① TRLBLE VOL dismantling and cleaning ② BASS VOL dismantling and cleaning ③ master volume dismantling and cleaning ④ switch disassembly polishing grease application (cartridge selector, TAPE23, BASS/CONTRA TAPE 1, 2 RECOUT1,2 MODE1,2) ⑤ solder repair ④ all input/output pin jack processing replacement ⑤ other switch cleaning, internal inspection and cleaning, Check operation))
Accessories: copy of instruction manual
Main specifications: MM/MC compatible W465 x H103 x D403 mm 8.5 kg
Compatible with a wide range of high quality digital inputs that are compatible with input from a PC. It is also compatible with use by separating them and making them compatible with future upgrades. The sound quality is transparent and has good separation, and the sound quality makes you think it was the most advanced machine at the time. The main body is dull and the remote control is sticky (Daiki Goto)
Maintenance information: 2025.3.19 Operation confirmed
Accessories: remote control, manual, power cable, original box
Main specifications: 110W+110W (8Ω) input compatible digital signal/32, 44.1, 48, 88.2, 96, 176.4, 192 kHz/16, 24 bit (coaxial, AES/EBU) 44.1, 48, 96, 192 kHz/16, 24 bit (USB) 32, 44.1, 48, 88.2, 96 kHz/ 16, 24 bit (optical) PCM format W435 x H175 x D435 mm 18.5 kg
Maintained by the manufacturer in 2023/9. A dedicated premain amplifier for tube lines using EL34. An impressive model with a sophisticated design and good sound of the cut in the EL34 tube. It has a transparent, glossy tone unique to tube amplifiers, and a modern sense of wide range and response. It comfortably drives small to medium speakers. There is a slight feeling of use, such as dullness on the terminals. Serial 06010493 (Mizushima Itsuro)
Maintenance information: 2025.3.18 Operation confirmed
2023.9.1 Maintained by the manufacturer (volume replaced with a new one, maintenance including cleaning and contact polishing)
Accessories: copy of instruction manual, power cable
Main specifications: circuit type EL-34 ultra linear connection AB class push-pull drive rated output 45W+45W (8Ω) SN-ratio 90dB vacuum tubes EL34 x 4, 12AX7 (JJ) x 1, 12AU7 (JJ) x 2 speaker output terminals 6Ω/8Ω input 4 systems W330 x H150 x D315 mm 15 kg
The disposal price has been reduced! (Member prices are not applicable) 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 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
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
32 deteriorated capacitors have been replaced, and all switches and volumes have been thoroughly restored, including disassembly and contact polishing! Furthermore, the wooden case has also been repaired. The popular LUXMAN classic 38 series. The graininess and fineness of the sound have been brilliantly revived. The soft, warm, and thick sound is soothing from the core (Sasaki Shota)
Maintenance information: 2025.3.13 Maintained (replacement of parts that have deteriorated over time, SW/VOL complete disassembly contacts repolished, and grease applied to prevent oxidation and sulfidation. Circuit readjustment, input/output waveform confirmation, load test (1kHz sine wave, at 8Ω load: 24.5W+24.5W), sound output test. (Cabinet repaired)
Accessories: copy of the manual
Main specifications: 30W+30W frequency characteristics 10Hz-50kHz vacuum tube/12AX7 x 3, 12AU7 x 3, 6267 x 2, 50C-A10 x 4, W476 x H190 x D335 mm 18 kg
The disposal price has been reduced. Member prices are not applicable. 2025/3/10 sales price 248,000 yen A vacuum tube pre-main amplifier with a full-scale PHONO equalizer built-in. The beautiful sound that feels good against the skin, typical of Uesugi makes vocals and stringed instruments sound gorgeous. It has a triode tube connection PP configuration with driving power, and there are plenty of mid to low ranges. There is dullness around the volume (Oikawa Tetsuji)
Maintenance information: 2025.3.10 operation confirmed
2023.7.26 Maintained (left channel output tube replaced (right channel also replaced at the same time) EQ circuit vacuum tube replacement. Main and balance volume exchange. Switch cleaning. Bias check adjustment. Output sound check (approx. 20W confirmation) interior and exterior cleaning)
Accessories: instruction manual
Main specifications: 6CA7 specification output 20W+20W PHONO (MM) input W445 × H170 × D432 mm weight 22 kg