The disposal price has been reduced! (Member prices are not applicable) 2026/3/15 sales price 498,000 yen, including replacement of 28 deteriorated capacitors, fully maintained! Gold rimmed early C20 preamp. With the thick, soft touch unique to Old Mackin, it vividly depicts music in the mid to high range, which has a different luster from C22. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2026.3.14 maintained (5 knob internal adhesive fixing repairs, 2 block capacitors 40/20 μF, etc., hum noise replacements, 2 bridge diodes → diodes replaced, 4 electrolytic capacitors, 50 μF deterioration replacement, 19 oil capacitors, 0.1 μF or other DC leak and deterioration replacements, 1/2 W resistor replacement, vacuum tube socket and RCA jack caulking repair* Other operation checks with AC 100 to 117 V done)
Accessories: copy of instruction manual
Main specifications: Vacuum tube used 6x4, 12AX7, 12AU7 dimensions W390 x H146 x D315 mm weight 8.3 kg
The disposal price has been reduced! Member prices are not applicable. 2026/4/20 sales price 448,000 yen Deteriorated parts including capacitors have been replaced and maintained! 220V specification (with 100V to 220V step-up transformer) This separate amplifier is still popular even now, 70 years have passed since its release. The thickness, luster, and tension of the sound are all emotionally composed, and perfectly express the sound of the instrument. Anyway, it is a famous machine with thick, firm mid-bass, and a tasteful sound unique to vacuum tubes. The external condition shows signs of use over time, such as damage, dullness, abrasions, etc. Serial 2373/27262/26728 (Fujisawa Yukishi)
Maintenance information: 2026.4.20 Maintained (QUAD2 (common) step-up transformer added. 1 x 2 x 3W Deterioration Resistor Replacement No. 27262 oil capacitor 0.1 μF pair replacement. QUAD22 blue line side broken wiring repair. Block capacitors 16 μF x 3 defective → replace 3 with 22 μF electrolytic capacitors. 4 1W resistors and 1/2W deterioration replacements Gang error improvement measures → 4 additional 1/4 W resistors for Radio1 only. Induction hum reduction measures → copper foil added. Vacuum tube socket and RCA jack caulking repair)
Accessories: power cord, step-up transformer
Main specifications: 13W (16Ω) with rated output AC220V [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
The disposal price has been reduced. Member prices are not applicable. 2026/4/3 sales price 598,000 yen Maintained including cabinet repair, replacement of 2 vacuum tubes, and 8 capacitors! Macintosh tubular receiver preamp The quality of the pre-section is rated as being equivalent to the C22. The thick, rich, and sticky tone is vintage McKinn itself. The main body is dull (Daiki Goto)
Maintenance information: 2026.4.3 maintained (each switch and selector contact repair · vacuum tube 6u8 deterioration replacement · vacuum tube 6U8 deterioration exchange · vacuum tube 6D10 noise exchange · block capacitor 50 μF x 4 ham noise exchange · electrolytic capacitor 10 μF other deterioration exchange and 5 additions · 2 ceramic capacitors 0.1 μF other deterioration replacement · dial thread rearrangement treatment and spring strengthening treatment · IF/RF/MPX readjustment · vacuum tube socket and RCA Jack caulking repair*Operation has also been checked with AC 100 to 117 V. Cabinet repair: exterior cleaning/repair/gloss adjustment painting)
Accessories: none
Main specifications: 117 V specification preamp input system PHONO1, 2, AUX, TAPE with FM tuner W395 x H120 x D305 mm 12.5 kg
The disposal price has been reduced. Member prices are not applicable. 2026/5/6 sales price 478,000 yen Deteriorated parts including capacitors have been replaced and maintained! 220V specification (with 100V to 220V step-up transformer) with wood cab. 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 is a famous machine with thick, firm mid-bass, and a tasteful sound unique to vacuum tubes. The exterior is oxidized on the volume knob, and there are text fragments (Mizusaki Ryo)
Maintenance information: 2026.5.3 maintained (◎ QUAD2 (common) · oil capacitor 0.1 μF deterioration replacement 3 x 2 · electrolytic capacitor 25 μF deterioration replacement x 2 · resistor 3W deterioration replacement 1 x 2 ◎ No. 36252 · vacuum tube KT66 damage replacement (it seems that it was broken into pieces during transportation. 2026.4.9 Supplies have arrived) ◎ QUAD22 · Filter selector hardening replacement · block capacitor 16 μF x 3 deterioration → replaced with 3 electrolytic capacitors · 0.5 μF other domestic products → replaced with European ones 4 · electrolytic capacitors 22 μF domestically produced → replaced with European products 4 · lamp defect replacement/resistance 1W deterioration replacement 4 · Radio1 only gang error improvement measures → 1/4 W resistor added 3 units* other with AC 220V Operation checked (measured at rated output 17W SP:8Ω) *KT66 1 glass shard is mixed in and makes a rattling sound, but operation is not affected)
Accessories: power cable, 220V step-up transformer
Main specifications: 17W (8Ω) with rated output AC220V [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
The price has been drastically reduced. 2026/5/17 sales price 598,000 yen Maintenance has been completed, such as replacing 5 capacitors and 4 diodes, disassembling and repairing the power switch! Changed to Japanese specification 100V. A mono power amplifier for broadcasters developed at the North West German Broadcasting Center. The tone is quite thick, supple, and soft. It's a model I'd like to try with Old Tannoy, Quad ESL, Eurodyne, etc. There is rust and dullness over time (Oikawa Tetsuji)
Maintenance information: 2026.5.17 maintained (◎ common · selenium deterioration countermeasures → diode addition 2 x 2 · power switch disassembly repair · BIAS readjustment · HUM ADJ. readjustment · vacuum tube socket caulking repair ◎ 1 side · 100 μF x 2 liquid leak replacement 2 pieces · electrolytic capacitor 33 μF and others defective replacement and 3 additions
*Operation has also been checked with AC 100 to 110 V (rated output measured at 41 to 55 W SP: 4 ohms) *For BIAS adjustments at AC100V, please perform BIAS adjustments near the left end of the green line under the meter)
Accessories: none
Main specifications: F2A11 push-pull effective output 40w (8Ω) vacuum tube F2A11 x 2, EF804 x 2 W522 x H171 x D290 mm
The price has been drastically reduced. 2026/5/22 sales price 398,000 yen Maintained including all output tube replacements! Line-specific tubular premain amplifier from the long-established Italian manufacturer UNISON RESEARCH. The sound is thick, and the glossy tone makes you feel comfortable listening to vocals, etc. While it has the fineness of the high frequency range, it is also powerful enough to play rhythms, so you can fully enjoy the appeal unique to excellent vacuum tube amplifiers. Remote control missing (Murakoshi Yoichi)
Maintenance information: 2026.5.21 Maintained (rotary switch, all output tubes replaced, vacuum tube pins cleaned. Bias check each input/output voice check)
Accessories: power cable
Main specifications: pure A grade tubular premain amplifier input terminal/CD, AV, Tuner, AUX output 27W+27W impedance 4Ω/8Ω (bi-wiring compatible) 1 subwoofer output terminal (for active use) frequency characteristics 20-30kHz use vacuum tube KT88 x 4 12AU7A x 2 12AX7A x 2 W440 x D415 x H205 mm (with protrusions) weight 25.0 kg
A tube phono equalizer dedicated to optical cartridges announced by Mr. Fujiwara Nobuo of Uesugi Research Institute in the Tubing Kingdom No. 109 “My Handy Craft” project. You can enjoy the glossy, stretchy sound unique to the tube type. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2026.5.24 Operation confirmed
Accessories: power cable
Main specifications: 1 input system, 25.5 dB, output impedance 2.2 kΩ, W358 x H110 x D 240 mm, 5.0 kg
The price has been drastically reduced. 2026/5/15 Sales price 448,000 yen Manufacturer maintained! It is a model that faithfully reproduces the famous Model 7 that Marantz is proud of at the company's North Carolina plant. The glossy mid-high range, thick mid-range, and sharpness typical of the same model have been faithfully inherited (Murakoshi Yoichi)
Maintenance information: 2026.5.14 manufacturer maintained (power block capacitor electrode part screwing correction) 2026.4.15 manufacturer maintained (poor contact with input selector and mode switch, contact cleaning fixed. Power supply, composite block capacitor external. Replace 6 coupling capacitors. Clean each vacuum tube pin, socket, and contact. Reinforced rear RCA input/output terminal chassis ground. Each lever switch, mode, tone control, and contact defect correction for each switch. Phono Rch Vacuum Tube (V1) Replacement. (Volume VR sharp correction)
Accessories: instruction manual (copy), power cable
Main specifications: used ECC83/12AX7 6 vacuum tubes W391 x H155 x D261 mm 5 kg
※There is no problem with the sound output, but it is inexpensive because there are noticeable cracks on the bottom, cracks around the tweeter, and paint peeling. 800 Diamond is deeply popular. It's a powerful monster speaker with both sound and design. The specifications of the tube-loading diamond dome tweeter make you feel the potential that does not fit within the frame of a monitor speaker. The high-fidelity reproduction picks up even the slightest sound effects of the sound source. The genuine jumper cable is out of stock (Sasaki Shota)
Maintenance information: 2026.5.24 sweep test is good
Accessories: original box, spikes
Main specifications: 3 way 4 speaker bass reflex playback frequency band 25 Hz to 33 kHz nominal impedance 8 Ω (minimum 3.1 Ω) crossover frequency 350 Hz/4 kHz W450 × H1180 × D645 mm 102 kg
We have prepared a special cable so that the power amplifier can be used alone! Maintained. 230V specification (it is possible to operate with a 100V power supply by using the included step-up transformer). With this, it is also possible to build a system with a Marantz 7 masterpiece preamp that you will dream of at least once. You can enjoy an excellent, thick vintage sound with a good QUAD tone and a relaxed sound. The relaxed expression unique to mono is also attractive, and you can enjoy the deep sound unique to vacuum tubes. If you have a QUAD22 preamp, you can use it with a normal 2+22 system (Kojima Yosuke)
Maintenance information: 2026.5.24 maintained (power cable, input cable, 6 newly manufactured film capacitors, 1 bottom screw replacement, 4 washers for bottom screws, additional step-up transformer, additional operation check (rated output 23 W SP: 16 Ω wiring))
Accessories: power cable, connection cable, 100V-230V step-up transformer (TOEI TS-6)
Main specifications: 230V specification KT66 push-pull vacuum tubes KT66 x 2, EF86 x 2, GZ32 15W+15W W313 x H165 x D106 mm approx. 9 kg/unit
The price has been drastically reduced. 2026/5/10 sales price 118,000 yen manufacturer maintenance completed! Tubular CD player using ECC88/6DJ8 as the output stage. It is compatible with USB/RCA coaxial/TOS optical digital input, and can be used not only as a CD player but also as a DAC by connecting to a PC. *The vacuum tube enters the circuit only for the RCA output. You can see a feeling of use such as appearance, dullness, small scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2026.5.9 manufacturer maintenance completed (tray belt replacement, remote control attached, comprehensive inspection of each part, audition test, aging)
Accessories: remote control, power cable, original box
Main specifications: Vacuum tube/6DJ8 (ECC88 compatible) x 2, 6N1 x 1 (for power supply) D/A converter/bar brown PCM1798 digital input terminal/USB (B) RCA coaxial, optical (TOS) digital output terminal/coaxial, optical (TOS) analog output terminal/RCA or XLR (No. 2 HOT/No. 3 COLD) However, the XLR output is solid state only, size W345 x D320 x H105 mm, weight 8 kg
The disposal price has been reduced. Member discounts are not applicable. 2026/5/9 sales price 448,000 yen Fully maintained, including replacement of deteriorated capacitors and resistors! The 220V specification (with 100V to 220V step-up transformer) is still popular even now, 70 years have passed since its release. The thickness, luster, and tension of the sound are all emotionally composed, and perfectly express the sound of the instrument. Anyway, it is a famous machine with thick, firm mid-bass, and a tasteful sound unique to vacuum tubes. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance Information: 2026.5.9 Maintained (QUAD2: Step Up Transformer Additional Block Capacitor 16 μF x 2 Hum Noise Replacement and Mounting Bracket Manufacture 1 x 2 Oil Capacitor 0.1 μF Deterioration Replacement x 2 Electrolytic Capacitor 22 μF Deterioration Replacement 1 x 2 x 2 Resistance 3W Deterioration Replacement 1 x 2 QUAD22: Vacuum Tube EF86 Replacement (2026.4.13 Supply Arrived) Adapter Missing 2 Block Capacitors Manufactured 16 μF x 3 → 3 additional electrolytic capacitors, 4 electrolytic capacitors, 22 μF deterioration replacement, 4 film capacitors, 0.1 μF, other deterioration exchanges, 2 resistors, 1 W and 1/2 W replacement, 8 gang error improvement measures → 1/4 W additional resistors, 5 AC plugs, additional vacuum tube socket and RCA jack caulking repair ※ Other operation check with AC 220V (rated output 13 W SP: 16 Ω wiring)
Accessories: power cable, copy of instruction manual, step-up transformer
Main specifications: 13W (16Ω) with rated output AC220V 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
The price has been reduced! 2026/5/22 sales price 278,000 yen Maintained! It is a 2+22 mono type. The analog EQ curve can be switched with a single button, perfect for mono recording enthusiasts. This is one that you want to play in combination with vintage speakers such as Tannoy and Altec. The nostalgic atmosphere you can't get on a modern aircraft is pleasant. The exterior has a feeling of wear over time, such as scratches and dullness. Serial 8275/73383 (Tomonori Asaine)
Maintenance information: 2026.5.22 maintained (Quad2 · step up transformer added · AC cord replaced with normal type · lamp defect exchange 3 · 0.1 μF deterioration exchange · 3 oil capacitors · 22 μF deterioration exchange · resistance 3W deterioration exchange · vacuum tube socket caulking repair QC2 · poor contact disassembly repair with each button · new manufacturing of oil capacitors 0.1 μF, etc. · 3 deterioration replacements · 22 μF electrolytic capacitors 4 other faults and deterioration replacements · 2 Mylar capacitors 1500 pF and other deterioration replacements · vacuum tube socket and RCA jack caulking repair ※ Other operation checked with AC230V (rated output 21W, measured at SP:8Ω) *Please press the 1 and 2 buttons on the radio 3 at the same time. Also, due to the structure of the selector, switching noise is high. ※The GZ32 guide pin of the rectifier tube is broken, but there is no problem with performance. Please be careful not to mismatch the position when inserting and inserting. (The rectifier tube and main body are marked in white)
Accessories: power cord step-up transformer
Main specifications: QUAD2 frequency characteristics 20 to 20,000 Hz input sensitivity 1.4 V signal-to-noise ratio 80 dB W313 x H165 x D106 mm weight approx. 9 kg QC2 line 2 systems, phono MM1 system W263 x H88 x D150 mm weight approx. 3 kg
All 4 output tubes have been replaced and maintained! Luxman's new generation vacuum tube power amplifier. Unlike the sound made by vacuum tube amplifiers in the old days, there is little sweetness, and you can enjoy crisp, tight sound quality, and a deep sense of density that cannot be obtained with transistor power. The response is also agile and the amplifier has a sense of speed. Since it comes with a volume, it can also be connected directly to a CD. There are spots and small scratches on the exterior (Wang Zhan)
Maintenance information: 2026.5.22 Maintained (4 output tubes replaced. Input volume exchange. Disassemble the input changeover switch and apply a protective agent for polishing and cleaning. Capacitor and resistor misalignment correction. Vacuum tube pin cleaning and foreign matter removal. The bias was adjusted, the output sound was checked, and the interior and exterior were cleaned. *There is no problem with the bias volume. (Because of the large, highly reliable sealed adjustment volume, some torque is required to turn)
Accessories: instruction manual, power cable, original box
Main specifications: used vacuum tube KT88 push pull KT88 x 4 ECC83S x 2 12BH7A x 2 mulard type circuit system 40W+40W input 2 system input (fixed/variable) W400 x H186 x D397 mm 25.1 kg
Overhauled by Electri, including replacement of deteriorated capacitors! A 1995 reprint model of the famous MC275. The output tubes are GE 6550A, and the first stage tubes are all arranged with Mcintosh balls. It is a model that stands out for its good SNR feel, improved fine particle feel, etc., and its depth of pocket is attractive, compatible with the latest sources. The heavy, vintage look is also great. * There is a description in the manufacturer's repair statement that 1 KT88 was replaced, but since the other 3 were GE 6550, the KT88 was removed and unified. There is dullness on the surface of the body (Kojima Yosuke)
Maintenance information: Maintained by 2026.4.30 Electric (output tube 6550A x 1, 12AT7 x 4, 2 resistors, multi-section CAN capacitors, 6 cathode capacitor meters replaced, and other inspections, measurements, and cleaning)
Accessories: instruction manual, repair statement
Main specifications: KT88 push-pull (GE 6550A x 4) 2 input systems (XLR/RCA) rated output 75W+75W (4/8/16Ω) mono 150W (2/4/8Ω) W406 x H190 x D305 mm weight 30.5 kg
The price has been drastically reduced! 2026/5/16 sales price 128,000 yen Maintained! 300B push-pull Chinese pre-main amplifier. The classic goodness of the 300B has been brought back to life with modern transformers and circuits. This is an amplifier where you can easily enjoy the smooth and glossy 300B sound. The exterior is dull and has small scratches. Serial 05050028 (Yonejima Satoshi)
Maintenance information: 2026.5.16 Maintained (capacitor and resistor replaced. Right channel inverting tube exchange. Vacuum tube pin cleaning Bias readjustment output audio check. Confirmed output of approx. 20W. Remote control light reception check (Normal/soft switching noise and noise when the power is turned off in a normal state are the current state)
Accessories: instruction manual, power cord
Main specifications: output 20 W x 2 frequency characteristics 10 Hz to 55 kHz input impedance 100 kΩ output impedance 4 ohm/8 ohm/16 Ω power consumption 280 W S/N ratio 91 dB W440 x H210 x D397 mm mass 26.5 kg
The price has been drastically reduced. 2026/5/16 sales price 218,000 yen First arrival! Comes with original box A novel vacuum tube driver that uses a 6SN7 high-output GT tube. The high sound quality design obtained with the flagship SRM-T8000 is followed everywhere. The elastic low range and intense mid-range energy richly reproduce the original expression of the music. The exterior is also in good condition with no noticeable scratches (Oikawa Tetsuji)
Maintenance information: 2026.5.16 Operation confirmed
Accessories: instruction manual, power cable, original box
Main specifications: W240 x H103 x D393 mm 5.7 kg
The price has been drastically reduced. 2026/5/4 sales price 198,000 yen Maintenance was completed in 2024/8. Class A vacuum tube power amplifier using 6550A output tube. Among lax, which has a reputation for its smoothness, the rich flavor is particularly attractive. It is a model where you can enjoy delicate tones and well-balanced mid and low frequencies (Kojima Yosuke)
Maintenance information: 2024.8.9 maintained (fixed because each part of the motherboard is soldered and floated, vacuum tube sockets and pins are all contact cleaned, input volume contact cleaned, bias readjusted, and specs inspected)
2026.5.4 Operation confirmed
Accessories: copy of the manual
Main specifications: effective output 40W+40W (8Ω) KT88 push-pull self-biased vacuum tube 6550A x 4/6CG7 x 2/12 AU7A x 2 W434 x H176 x D252 mm 19 kg
Maintenance has been completed, including the replacement of 55 electrolytic capacitors! Lux tubular pre-main amplifier. It is designed to look like separate amplifiers combined into one body. Since the 6550 is built in, I imagine a powerful sound, but since the power is reduced, you can enjoy a thick, glossy sound (Sasaki Shota)
Maintenance Information: 2026.5.17 Maintained (Degraded Electrolytic Capacitor Replacement (55 in Power Supply Unit, Power Amplifier Unit, Phono Equalizer Unit, Tone and Buff Amp Section) Lever Switch Partial Disconnect Cleaning (Turnover Frequncy Switch/Filter/Mode/Monitor/Input-Selector Switch) Constant Voltage Circuit Resistance Disconnection Exchange (x2) Tone Balance Main Volume disassembly contact cleaning. (Operation point check and adjustment and sound output test after the above treatment)
Accessories: copy of the manual
Main specifications: 32W+32W (8Ω) vacuum tube 6550, 6CG7, 12AX7A W493 x H170 x D477 mm 25 kg
Pair tube large punch top grid square getter made in America lot: 6152/6413 measured value 54/50 (rejected value 30) with white box on one side of the tube has adhesive marks on the cap part at the top of the head ※Pairs are determined based on the gM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube large punch top grid square getter made in America lot: 7013/unknown measured value 60/54 (rejected value 30) with white box*Pairs are judged based on gM values measured by testing machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube large punch top grid square getter made in America lot: 6152/6152 measured value 54/52 (rejected value 30) with original box both tubes have adhesive marks on the top of the head cap*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube 45 Special compatible ball straight heat triode tube fishing rod type filament measurement value 104/102 (rejection value 55) with white box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube large punch code: 6252/6539 top grid square getter measurement value 74/72 (rejected value 44) with original box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box (model year varies)
Pair tube large punch code: 6952/7052 top grid square getter measurement value 78/76 (rejected value 44) with original box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box (model year varies)
Pair tube Sun Valley sorting ball direct heat triode tube made in China white base gold foot measurement value 72/70 (rejected value 58) both sides have burns on the head ※The pair is determined based on the gM value measured by the test machine TV-7 (Kojima Yosuke)
Accessories: none
Selling 1 bottle Top Mark Top Grid Square Getter Measured Value 42 (Rejected Value 26) The number of getters with the original box seems to have decreased slightly ※The measured values indicate gM values measured with the TV-7 testing machine (Kojima Yosuke)
Accessories: original box (lid is missing)
Pair tube heat dissipation pentode tube made in America measured value 54/52 (rejection value 36) There is a getter burn with the original box ※The pair is determined based on the gM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box
The price has been drastically reduced! 2026/5/2 sales price 348,000 yen LUXMAN tubular preamp. Adopts a 32-point ultimate contact volume. You can enjoy a clear, glossy vacuum tube sound while retaining the soft texture of lax. The simple, easy to operate, and sophisticated design is attractive. There is a feeling of use on the exterior due to small scratches and line damage. Serial W31010020 (Tomonori Asaine)
Maintenance information: 2026.5.2 operation confirmed
Accessories: instruction manual
Main specifications: input impedance 170mV/40kΩ output impedance 1V (maximum 10V) /2 kΩ input terminal 6 systems output terminal systems (1 system is a TAPE output terminal) SNR 98dB W438 × H155 × D428 mm weight 18 kg
Maintenance completed in February 2025. A high output power amplifier representative of the Lux Kit. As with the original, the output tube was replaced with a GE 6550A, and the sound that combines both tasteful luster and strength is attractive. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.2.21 maintenance completed (all 4 output tubes 6550A replaced, 6AQ8 replaced, 2 RCA jacks replaced for deterioration, simple external and internal cleaning, re-soldering treatment at several parts of the board, vacuum tube socket caulking repair, and other measured output 50W (8Ω) measured with AC100V)
Accessories: none
Main specifications: mulard type drive circuit adopted 50W+50W W465×H168×D206mm 17kg