model 8BKU.S.A

This item has been sold.You can't purchase now. 24-44630-25362-00
model 8BK
Manufacture:marantz
Original price: JPY 165,000
Price: JPY 243,636 Sold Out
Power amplifiers (tube type)
U.S.A
Arrival: 2024-12-18 19:56:53
description
The disposal price has been reduced. Member discounts are not applicable. 2024/12/18 Sales price 348,000 yen Maintenance completed! Kit model of Old Marantz's greatest masterpiece power amplifier 8B. The exquisite bandwidth balance and good output set it apart from common old amplifiers. The information necessary for music is perfectly incorporated into the narrow range, and the high level of freshness is also exceptional. You can see the exterior, dullness, rust, abrasions, etc. and a feeling of use (Kobayashi Hitoshi) Maintenance information: 2024.12.18 Maintained (block capacitor 0/20 μF and others, 3 defective replacements; BIAS knob replacement, BIAS knob replacement, internal wiring, solder treatment, vacuum tube 6BH6 replacement, BIAS readjustment, external cleaning, vacuum tube socket and RCA jack caulking repair*Other operation checked with AC100V (measured at rated output 45W SP: 8Ω) Accessories: instruction manual Main specifications: 35W+35W 20Hz-40kHz W348 × H191 × D273 mm 22.5 kg

SV-KT88Japan

This item has been sold.You can't purchase now. 25-45187-00728-00
SV-KT88
Manufacture:SUN AUDIO
Original price: JPY 220,500
Price: JPY 125,455 Sold Out
Power amplifiers (tube type)
Japan
Shop: Osu shop
Arrival: 2025-02-01 20:08:48

UV211pp

This item has been sold.You can't purchase now. 24-44496-24203-00
UV211pp
Manufacture:N.TEC
Original price: JPY 800,000
Price: JPY 361,818 Sold Out
Power amplifiers (tube type)
Shop: Osu shop
Arrival: 2025-01-25 20:20:35
description
Maintained! A luxury power amplifier using a 211 (GE VT-4C) as a push-pull. It uses an extremely powerful lower power supply unit, so you can enjoy the tremendous power and exhilarating sound. *The bottom of this device is the power supply section and the top is the amplifier section. Use it by connecting the top and bottom to the central connector. Please place this connector so that excessive force is not applied so as not to shift the position of the terminal so as not to damage it. When disassembling, be careful of the high voltage around the terminals. Once the power is turned on, even if the power is turned off, the high voltage does not drop naturally immediately because there is no discharge circuit. There are also cases where the voltage does not go out for more than 1 day (Sasaki Shota) Maintenance information: 2025.1.25 Maintained (driver circuit wiring rearranged. Unbalanced input circuit wiring rearranged. Parasitic oscillation prevention resistor addition treatment x 4, ripple circuit electrolytic capacitor replacement x 2. 6 CG7 x 4 have been replaced with new ones. Meter circuit switch disassembly cleaning treatment. 211 heater circuit bridge replaced due to poor diode balance. The cushion was replaced due to damage. The plate current is set to 50 mA, and the residual noise check and sound output test are good.) Accessories: power cable Main specifications: undistorted maximum output 21W (8Ω) overall frequency characteristics 5 Hz to 42 kHz residual noise during unbalance input 0.4 mV residual noise during balance input 0.5 mV gain during unbalance 21 dB gain at balance 15 dB 

MC240U.S.A

This item has been sold.You can't purchase now. 24-44643-25516-00
MC240
Manufacture:McIntosh
Price: JPY 408,182 Sold Out
Power amplifiers (tube type)
U.S.A 1960 made
Arrival: 2024-12-29 20:22:39
description
The price has been drastically reduced! 2024/12/29 sales price 498,000 yen Every detail, such as block capacitors and electrolytic capacitors, has been maintained! Comes with a hood. It is a famous machine with a velvety transformer, and you can enjoy rich sound with stable operation. The fresh, glossy tone in the mid to high range has a different appeal from the MC275. There are small scratches, rust, and missing lettering on the exterior (Satoshi Yonejima) Maintenance information: 2024.12.29 Maintained (replaced with a genuine switch knob. Replace 4 250μF block capacitors and other defects and deterioration. Replace 6 oil capacitors with 0.22 μF and other deterioration Replace 3 12 μF electrolytic capacitors and other deterioration. Thermistor deterioration replacement. Selenium deterioration countermeasures → diode added. 2 1W resistor deterioration replacements Vacuum tube socket and RCA jack caulk repair. Other operation checked (measured at 41 to 58 W SP: 8 Ω with rated output AC 100 to 117 V) Accessories: bonnet Main specifications: 40W+40W 6L6GCPP vacuum tube 6L6GC × 4 12AX7 × 3 12AU7x2 12BH7 × 2 frequency characteristics 16 to 40,000 Hz dimensions W400 × D265 × H195 mm weight 25 kg

TAP-16Japan

This item has been sold.You can't purchase now. 25-45233-01055-00
TAP-16
Manufacture:UESUGI
Original price: JPY 406,000
Price: JPY 361,818(pair)Sold Out
Power amplifiers (tube type)
Japan 2001 made
Shop: Osu shop
Arrival: 2025-01-21 20:06:31
description
Western Electric 300B x 4 included! 300B push-pull mono power amplifier designed by Mr. Uesugi. A Williamson circuit configuration is used. You can enjoy the thickness of the medium sound and the comfortable feeling of extrusion. There are no noticeable scratches (Sasaki Shota) Maintenance information: 2025.1.21 (operation confirmed) Accessories: A copy of the Tubular Ball Kingdom article Main specifications: 18W (4/8/16Ω) Frequency characteristics: 20Hz-20kHz W288 × H204 × D220 mm 12 kg

SV-2A3Japan

This item has been sold.You can't purchase now. 25-45187-00726-00
SV-2A3
Manufacture:SUN AUDIO
Original price: JPY 274,000
Price: JPY 125,455 Sold Out
Power amplifiers (tube type)
Japan
Shop: Osu shop
Arrival: 2025-01-21 20:04:05
description
※It is inexpensive because it has scratches and mold stains. A single stereo power amplifier using a 2A3 output tube that made the Sun Audio name popular. You can enjoy the aftertaste of sound and air unique to vacuum tubes. It expresses vocals and string music in a sweet and glamorous manner. It is an affordable and well-built car (Shota Sasaki) Maintenance information: 2025.1.20 Operation confirmed Accessories: power cable Main specifications: rated output 3.5W+3.5W vacuum tube 2A3 x 2 6H8C x 2 5U4G x 1 W360 x D210 x H190 mm 16 kg

SS-1Japan

This item has been sold.You can't purchase now. 24-44726-26211-00
SS-1
Manufacture:西村電機工業
Original price: JPY 340,000
Price: JPY 134,545 Sold Out
Power amplifiers (tube type)
Japan
Shop: Osu shop
Arrival: 2025-01-19 20:03:34

自作パワーアンプ(211シングル)

This item has been sold.You can't purchase now. 24-44639-25441-00
自作パワーアンプ(211シングル)
Manufacture:自作
Price: JPY 680,000(pair)Sold Out
Power amplifiers (tube type)
Arrival: 2025-01-17 20:02:49
description
Refreshed and maintained with attention to detail! *This model starts after a timer for 20 seconds. The 5AR4 rectifier tubes at both ends are inserted to stabilize the heater voltage. When entering balance, number 3 is HOT. Strong sound emanating from the impressive UV-211 and TANGO trance. The large speakers also drive well, and the hot sound is attractive. The chassis is also carefully made, and it is a car full of luxury. There is a feeling of use such as scratches and dullness (Tomoho Asae) Maintenance information: 2025.1.17 maintenance included (styrol capacitor 560pF removed to prevent common negative feedback circuit oscillation, replacement heater adjustment vacuum tube socket 4P → 8P, replacement heater adjustment resistance 5W additional vacuum tube adjustment resistor 5W additional vacuum tube fixing bracket adhesive repair exterior simple cleaning, RCA jack caulking and vacuum tube socket caulking repair connector part contact polishing repair operation check with AC100V Done (measured with rated output 15 W SP: 8 ohms) There is a slight error (approx. 5 mA) on the BIAS meter, but there is no problem with performance) Accessories: power cord Main specifications: Vacuum tube used VT-4C (GE) 5AR4 (National) 6SN7GTB (Raytheon) UX-865B (Mazda) weight 31.3 kg (actual measurement)

KT88/EL34 single stereo amplifireJapan

This item has been sold.You can't purchase now. 24-44458-23858-00
KT88/EL34 single stereo amplifire
Manufacture:ALC
Price: JPY 72,545 Sold Out
Power amplifiers (tube type)
Japan
Shop: Osu shop
Arrival: 2024-12-21 20:18:08
description
The disposal price has been reduced. Member discounts are not applicable. 2024/12/21 sales price 118,000 yen Maintained! EL34 single amplifier Since it is single, the output is modest, but you can enjoy the air feeling unique to vacuum tubes. Great for high-efficiency speakers and multi-mid- to high-frequency ranges. The internal parts are different from the one that arrived at the same time (Oikawa Tetsuji) Maintenance information: 2024.12.21 Maintained (replaced due to burning SG resistors and filter resistors, replaced, AC cord created, vacuum tube pin cleaned*Bias and output sound were checked. Output 5W+5W input impedance 50KΩ input sensitivity 110mV 12AU7 → 12BH7 → EL34 3 connections) Accessories: power cable Main specifications: output 5W+5W input impedance 50KΩ using vacuum tube 12AU7/12BH7/EL34 Single W370 x H177 x D250 mm 13.7 kg (actual measurement)

KT88/EL34 single stereo amplifireJapan

This item has been sold.You can't purchase now. 24-44458-23859-00
KT88/EL34 single stereo amplifire
Manufacture:ALC
Price: JPY 72,545 Sold Out
Power amplifiers (tube type)
Japan
Shop: Osu shop
Arrival: 2024-12-21 20:18:09
description
The disposal price has been reduced. Member discounts are not applicable. 2024/12/21 sales price 118,000 yen Maintained! EL34 single amplifier Since it is single, the output is modest, but you can enjoy the air feeling unique to vacuum tubes. Great for high-efficiency speakers and multi-mid- to high-frequency ranges. The internal parts are different from the one that arrived at the same time (Oikawa Tetsuji) Maintenance information: 2024.12.21 Maintained (each replacement speaker terminal is damaged due to electrolyte condenser fluid leak, first stage tube replacement to improve SN on the right ch, AC cord creation, vacuum tube pin cleaning *Bias and output sound were checked. Output 5W±5W, input impedance 50KΩ, input sensitivity 110mV 12AU7 → 12BH7 → EL34, 3 connections) Main specifications: output 5W ± 5W input impedance 50KΩ input sensitivity 110mV 12AU7 → 12BH7 → EL34 Single W370 × H177 × D250 mm 13.7 kg (actual measurement)

AS-300B

This item has been sold.You can't purchase now. 24-45051-28721-00
AS-300B
Manufacture:Cayin
Price: JPY 72,545 Sold Out
Power amplifiers (tube type)
Arrival: 2025-01-15 19:16:23
description
Maintained! ※The hood is out of stock, so it's cheap. 300B single tube power amplifier. In addition to its excellent workmanship, you can enjoy the natural, glossy sound of 300B. It seems to go well with small, efficient speakers. There are scratches on the transformer and chassis. Serial 00110046 (Fujisawa Yukishi) Maintenance information: 2024.1.20 Maintained (motorized volume disassembly, cleaning, reassembly, vacuum tube pin cleaning. Solder correction. Check the switches. Condenser misalignment correction Bias check output audio check. Output approx. 6W 6SL7 → 6SN7 → 300B single (fixed bias) Accessories: power cord Main specifications: 6W+6W Vacuum tube used: 300B x 2 6N8P (6SN7) x 2 6N9P (6SL7) x 2 W350 x H200 x D420 mm weight 18 kg 

Woodham 300B CLASSIC UK

This item has been sold.You can't purchase now. 24-44506-24281-00
Woodham 300B CLASSIC
Manufacture:CR DEVELOPMENTS
Original price: JPY 398,000
Price: JPY 270,909 Sold Out
Power amplifiers (tube type)
UK 1998 made
Shop: Osu shop
Arrival: 2025-01-10 19:44:05
description
Maintained! A model commemorating the 10th anniversary of the company's founding (limited production of 250 units) using the WE300B as the output tube. Stereo model. It features a glossy, smooth, and warm sound, and expresses the luster of vocals. When using 2 units and using mono drive, strength is added. There is dullness on the volume knob (Kojima Yosuke) Maintenance information: 2025.1.10 maintained (4 electrolytic capacitors, volume exchange, solder correction, correction with hakamagra, electrolytic capacitor position correction bias and output sound check *6SN7 → 6SN7 → 300B Single self-bias output 6W) Accessories: power cable Main specifications: 7W+7W (8Ω, stereo), 12W (8Ω, mono) vacuum tube 300B x 2, 6SN7 x 3 W430 x H220 x D390 mm 14 kg

Woodham 300B CLASSIC UK

This item has been sold.You can't purchase now. 24-44506-24280-00
Woodham 300B CLASSIC
Manufacture:CR DEVELOPMENTS
Original price: JPY 398,000
Price: JPY 270,909 Sold Out
Power amplifiers (tube type)
UK 1998 made
Shop: Osu shop
Arrival: 2025-01-10 19:44:01
description
Maintained! A model commemorating the 10th anniversary of the company's founding (limited production of 250 units) using the WE300B as the output tube. Stereo model. It features a glossy, smooth, and warm sound, and expresses the luster of vocals. When using 2 units and using mono drive, strength is added. There is dullness on the volume knob (Kojima Yosuke) Maintenance information: 2025.1.10 maintained (4 electrolytic capacitors, volume, 1 resistor replaced, solder correction bias and output sound check *6SN7 → 6SN7 → 300B Single self-bias output 6W) Accessories: power cable Main specifications: 7W+7W (8Ω, stereo), 12W (8Ω, mono) vacuum tube 300B x 2, 6SN7 x 3 W430 x H220 x D390 mm 14 kg

845 power amp

This item has been sold.You can't purchase now. 24-44459-23866-00
845 power amp
Manufacture:N.TEC
Price: JPY 361,818(pair)Sold Out
Power amplifiers (tube type)
Shop: Osu shop
Arrival: 2025-01-11 20:08:48
description
Maintained! A mono power amplifier using an 845. Please enjoy the energetic sound unique to the 845. * After turning on the power to this unit, a plate voltage of 845 is applied in about 50 seconds, and the plate current flows about half of normal. After that, the plate current flows to the set value in 10 seconds, and the sound is produced normally (Oikawa Tetsuji) Maintenance information: 2025.1.11 Maintained (vacuum tube socket mounting socket part screw replacement due to screw failure, vacuum tube 5751 replacement due to noise generation (USA manufacturer unknown)) First stage UNBALANCE input circuit power supply ripple circuit improvement procedure, plate current adjustment (60 mA), ham balance adjustment, output meter pointer operation normal, sound output test is good. FAN motor operation stop action. Drive signal circuit & ripple circuit reinforcement treatment Reference value undistorted output: 24W/8Ω (1kHz), NON-NFB (non-feedback class A operation) frequency bandwidth: 5Hz to 56kHz (1W/8Ω) ・Damping factor: 1.6 Gain: 19 dB (UNBALANCE input) 13.5 dB (BALANCE input) Input sensitivity: RCA input approx. 1.5 V produces 28 W. Residual noise: 0.7 mV (however, linear measurement (no A correction)) Main specifications: 845 push-pull 24W+24W (8Ω) vacuum tube 845/5751/6829 W300 x H290 x D490 mm weight 23 kg/1 unit

300B PPJapan

This item has been sold.You can't purchase now. 24-44458-23865-00
300B PP
Manufacture:ALC
Original price: JPY 1,100,000
Price: JPY 343,636(pair)Sold Out
Power amplifiers (tube type)
Japan
Shop: Osu shop
Arrival: 2025-01-11 20:08:46
description
Maintained! All-stage push-pull Class A mono amplifier. A highly textured vacuum tube amplifier that allows you to fully experience the good sound of the 300B. The spatial expression unique to mono and the supple 300B tone make you relax and enjoy the music (Mizusaki Ryo) Maintenance information: 2025.1.11 Maintained (power supply unit, smooth capacitor, each replacement, vacuum tube pin cleaning, AC cord creation for rectifier tube deterioration (simultaneous receptacle exchange), changed to standard due to XLR input pin assignment irregularities ① GND ② HOT ③ COLD missing screw added*bias check output voice check interior and exterior cleaned) Accessories: power cord Main specifications: output 15 W, input impedance 600 ohms, input sensitivity 0.1 V, output impedance: 4, 8, 16 ohms, size W370 x H200 x D280 mm, weight 17.2 kg, Tamura transformer usage model PC3004 A4004 F783

BA-214G/A7Japan

This item has been sold.You can't purchase now. 24-44986-28307-00
BA-214G/A7
Manufacture:MASTERS
Price: JPY 63,455 Sold Out
Power amplifiers (tube type)
Japan
Arrival: 2024-12-24 20:08:16
description
The price has been reduced! 2024/12/24 sales price 79,800 yen Large dual triode and 6AS7G push-pull power amplifiers are in stock from Ishino Lab's Masters designed by Mr. Hirano. There is no habit and the sound is clean and sharp. Recommended for those using small speakers or high efficiency speakers. *Sound is produced after about 15 seconds of turning on the power, and operation stabilizes in about 10 minutes. This is not a bug due to specifications. (FUJISAWA KOSHI) Maintenance information: 2024.12.24 Operation confirmed Accessories: instruction manual, power cord Main specifications: Willianson push-pull configuration 6AS7G (RCA) x 2 6CG7 (GE) x 2 12AT7 x 2 output 10W+10W frequency characteristics: 20 Hz to 20 kHz gain 23 db W380 x H205 x D328 mm 14 kg (actual measurement)

Premier fourU.S.A

This item has been sold.You can't purchase now. 24-89024-28958-00
Premier four
Manufacture:Conrad johnson
Original price: JPY 1,350,000
Price: JPY 310,000 Sold Out
Power amplifiers (tube type)
U.S.A 1984 made
Shop: Osu shop
Arrival: 2024-12-30 19:51:51
description
The price has been drastically reduced. 2024/12/31 sales price 398,000 yen Maintained! Tubular power amplifier using 8 EL34s. It features a powerful, lively, and energetic sound, and can be enjoyed regardless of genre, such as classical music, jazz, or vocals. The output is also high and can play any speaker. The exterior is dull and has a feeling of use over time, but there are no noticeable scratches (Mizusaki Ryo) Maintenance information: 2024.12.21 Maintained by us (replaced due to AC cord damage. Right channel low frequency oscillation → constant voltage control transistors and diodes are replaced due to leaks and short circuits. Solder correction. The earth is loosened and tightened. Output sound checked) 2024.11.10 Maintained by other companies (all vacuum tube legs and sockets have been cleaned and cleaned. Bias readjusted, set the LED to turn off at 4V output) Accessories: 4 dedicated fuses Main specifications: 100W+100W frequency characteristics 20-20,000Hz-0.5dB SNR 96dB W483×H229×D521mm 36.3 kg

300B PPJapan

This item has been sold.You can't purchase now. 24-44695-25939-00
300B PP
Manufacture:ALC
Original price: JPY 1,100,000
Price: JPY 310,000(pair)Sold Out
Power amplifiers (tube type)
Japan
Arrival: 2024-12-30 19:47:16
description
The price has been drastically reduced! 2024/12/31 sales price 378,000 yen Maintained including replacement of deteriorated capacitors and defective vacuum tubes! All-stage push-pull Class A mono amplifier. A highly textured vacuum tube amplifier that allows you to fully experience the good sound of the 300B. The spatial expression unique to mono and the supple 300B tone make you relax and enjoy the music. The exterior is dull and rusty (Yonejima Satoshi) Maintenance information: 2024.12.29 Maintained (output tube replacement on one side (MP replacement)) First stage tube replacement on the other side. Each was replaced due to the electrolyzer explosion-proof valve deformation (both units). Missing screws added. The XLR input pin assignment was changed to standard due to irregularity. XLR input ① GND ② HOT ③ COLD Bias and output audio check. Input impedance 600Ω, output 15W) Accessories: power cord Main specifications: non-feedback full-stage P-P transformer coupling class A amplifier first stage tube 6SN7 driver tube 6SN7 output tube 2 x 300 rectifier tube 5U4 output grade A 15 W input impedance 600 Ω output impedance: 4,8 x 16 ohms size W370 x H200 x D280 mm weight 17.2 kg

V69bGermany

This item has been sold.You can't purchase now. 24-44459-23867-00
V69b
Manufacture:TELEFUNKEN
Price: JPY 452,727(pair)Sold Out
Power amplifiers (tube type)
Germany
Arrival: 2024-12-29 20:28:12
description
Maintained, including 14 capacitors and 1 F2A11/EF804 replacement. Step-up transformer included A mono power amplifier for broadcasting stations developed at the North-West German Broadcasting Center. Unlike the image of a strict exterior, the sound is thick and soft. It's a model I'd like to try with Old Tannoy, Quad ESL, Eurodyne, etc. The exterior is dull and has small scratches (Oikawa Tetsuji) Maintenance Information: 2024.12.29 Maintained (Common · AC100 → 250V Step Up Transformer Missing Item Added · Volume Knob Missing Item Added · Installation Processing Procedure 1 x 2 · AC Code ASSY Production 1 Set x 2 · Block Capacitor 32 μF Defective → Electrolytic Capacitor Added 1 x 2 · Film Capacitor 0.047 μF Tubular Replacement 6 x 2 · Resistor 1 W Deterioration Replacement 2 x 2 · BIAS and HUM ADJ. Reconditioned · RCA Jack and Vacuum Tube Socket Caulking Repair ◎ No. 612 · Vacuum Tube EF804 Noise Exchange/Vacuum Tube F2A11 Deterioration Replacement ※ Other Operation Checked with AC 220V (Rated Output 40W SP: 8Ω) ※ Input Impedance: 600Ω (Ambala) Output Impedance: 4Ω (8/16Ω can be used) Accessories: step-up transformer, power cable Main specifications: F2A11 push-pull 220V specification effective output 40W (8Ω) vacuum tube F2A11 x 2, EF804 x 2 W522 x H171 x D290 mm

MQ-88uCJapan

This item has been sold.You can't purchase now. 24-45041-28631-00
MQ-88uC
Manufacture:LUXMAN
Original price: JPY 390,000
Price: JPY 230,909 Sold Out
Power amplifiers (tube type)
Japan 2017 made
Arrival: 2024-12-27 19:55:34
description
The price has been drastically reduced. 2024/12/27 sales price 298,000 yen Luxman vacuum tube power amplifier. Using KT88 as the output stage, it is a powerful yet highly transparent amplifier. It is a vacuum tube amplifier with excellent modern resolution and a sense of speed while being based on classical designs from the past. Serial M20600470 (Murakoshi Yoichi) Maintenance information: 2024.12.27 sound output confirmed Accessories: power cord Main specifications: 25W+25W (4.8/16Ω) input direct 1 system variable 1 system output 1 system (4, 8, 16 ohm independent) power consumption 150 W 440 x 184 x D230 mm 16.1 kg

MC275U.S.A

This item has been sold.You can't purchase now. 24-44643-25515-00
MC275
Manufacture:McIntosh
Price: JPY 816,364 Sold Out
Power amplifiers (tube type)
U.S.A 1962 made
Arrival: 2024-12-28 20:03:18
description
Maintenance has been completed, including vacuum tube and capacitor replacement! The original MC275 is the pinnacle of Macintosh tube amplifiers. A famous historical machine that intensely entertains music with its velvety luster and strong tone. Instead of resolution or wide range, the rich sound that makes you feel a sense of life is truly the Macintosh sound itself. The exterior has oxidation, rust, and the lettering has disappeared (Tamura Eiji) Maintenance information: 2024.12.28 maintained (AC code deterioration replacement · vacuum tube 12AX7 defective replacement · vacuum tube KT88 deterioration replacement 2 pieces (use 1 paid product) · 2 replacement with genuine thermistors · replacement with 0.1 μF oil capacitors 2 · replacement with 0.22 μF other deterioration capacitors · 6 oil capacitors 0.22 μF other deterioration replacement · 2 electrolytic capacitors 100 μF deterioration replacement · Electrolytic capacitors 10 μF and others made by F&T → replaced with Sprague 5 resistors, 1 W deterioration replacement, 2 vacuum tube sockets and RCA jack caulking repairs. *Other operation checks have been performed (measured at 69 to 91 W SP: 8 Ω at rated output AC 100 to 117 V) (*2024.12.14 supplies have arrived) Accessories: none ※hood missing Main specifications: 75W+75W (in stereo) 150W (in mono) vacuum tube 12BH7 x 2, 12AX7 x 1, KT88 x 4, 12AU7 x 2, 12AZ7 x 2 W311 x H203 x D438 mm 30.4 kg

MC240U.S.A

This item has been sold.You can't purchase now. 24-44833-27117-00
MC240
Manufacture:McIntosh
Price: JPY 452,727 Sold Out
Power amplifiers (tube type)
U.S.A 1960 made
Arrival: 2024-12-27 19:51:32
description
Refreshment maintenance has been completed with attention to detail so that it can be used for a long time after replacing block capacitors, etc. The MC240, which has a good exterior condition, is now in stock. It is a famous machine with a velvet transformer, and you can enjoy rich sound with stable operation. The fresh, glossy tone in the mid to high range has a different appeal from the MC275. Serial 13543 (Murakoshi Yoichi) Maintenance information: 2024.12.25 Maintained (replacement of 3 250μF block capacitors, AC cord, 20μF and others, 3 oil capacitors, 0.22μF and others, thermistors and 4 1W resistors. RCA jack and vacuum tube socket caulk repair. Operation check (measured at 45 to 61 W SP: 8 Ω with rated output AC 100 to 117 V). Main specifications: 40W+40W 6L6GCPP vacuum tube 6L6GC × 4 12AX7 × 3 12AU7x2 12BH7 × 2 frequency characteristics 16 to 40,000 Hz dimensions W400 × D265 × H195 mm weight 25 kg

U-BROS-14Japan

This item has been sold.You can't purchase now. 24-45002-28402-00
U-BROS-14
Manufacture:UESUGI
Original price: JPY 900,000
Price: JPY 343,636(pair)Sold Out
Power amplifiers (tube type)
Japan 1990 made
Arrival: 2024-12-22 19:51:21
description
The price has been reduced! 2024/12/22 sales price 398,000 yen Wesugi mono EL34 push-pull power amplifier. Uses traditional Tamura Trans It is a dish where you can feel the clear and stable pyramid balance typical of Wesugi, based on Tannoy Westminster owned by the late Mr. Uesugi. The exterior is dull and slightly dirty, but it is a beautiful individual compared to its age. Serial 219, 220 (Fujisawa Yukishi) Maintenance information: 2024.12.22 operation confirmed Accessories: No accessories Main specifications: output tube EL34/6CA7 output 60W (4/8/16Ω) W435 × H232 × D175 mm 22 kg

KMQ60Japan

This item has been sold.You can't purchase now. 24-89024-28183-00
KMQ60
Manufacture:LUXKIT
Original price: JPY 62,000
Price: JPY 143,636 Sold Out
Power amplifiers (tube type)
Japan 1969 made
Shop: Osu shop
Arrival: 2024-12-26 20:16:06
description
Fully restored! A kit model of a power amplifier using a 50CA10 3-pole output tube and an OY15 type output transformer, composed of circuits and parts conforming to the MQ60 type, which has been evaluated by LUXMAN. The sound of a vacuum tube has a sense of volume that seems to meet expectations, and it gently envelops you. The sound, which doesn't require scale, is particularly unique, and the slight thickness that spreads from below the mid-range makes you feel comfortable. The exterior is dull, rust, abrasions, etc., and there is a feeling of use (Ryo Mizusaki) Maintenance Information: 2024.12.25 Maintained (22Ω ✕ 2 resistors, 6AQ8 replaced) 2024.11.22 Maintained (Vacuum tube 6AQ8 was replaced due to defective vacuum tube. Input/output waveform check, sound output test OK) 2024.6.21 maintained (vacuum tube socket, block capacitor, electrolytic capacitor, oil capacitor, SP and RCA terminals, semi-fixed VR, fuse holder replacement. Load test (8Ω load 1kHz 24.5W+24.5W), input/output waveform confirmation, impedance switching SW/gain VOL disassembly contact refinement, oxidation and sulfidation prevention grease coating. Input/output waveform confirmation, load test (1 kHz sine wave, 8 ohm load: 28 W+28 W, actual measurement), sound output test) Main specifications: 30W+30W 50CA10 push pull W410 x H160 x D205 mm 13.8 kg

MQ-30SJapan

This item has been sold.You can't purchase now. 24-45034-28579-00
MQ-30S
Manufacture:LUXMAN
Original price: JPY 250,000
Price: JPY 152,727 Sold Out
Power amplifiers (tube type)
Japan 1996 made
Shop: Osu shop
Arrival: 2024-12-26 06:26:48
description
A vacuum tube stereo power amplifier with more cost performance while inheriting the technology of the company's vacuum tube amplifier MQ-38s. It has 3 input systems and a volume, so it is easy to use even for those who use a direct connection. It has a thick sound with rich pyramid balance, making it a perfect product for relaxing listening. The exterior is also in good condition with no conspicuous scratches (Oikawa Tetsuji) Maintenance information: 2024.12.25 Operation confirmed Accessories: power cable, instruction manual Main specifications: execution output 30W+30W (6Ω) input sensitivity/impedance 500mV/50kΩ load impedance 6Ω input switching 3-system vacuum tube EL34G (6CA7) x 2, 5814A (12AU7) x 2, 6CG7 x 2 W430 x H207 x D390 mm weight 19.5 kg

Premier fourU.S.A

This item has been sold.You can't purchase now. 24-44691-25918-00
Premier four
Manufacture:Conrad johnson
Original price: JPY 1,350,000
Price: JPY 361,818 Sold Out
Power amplifiers (tube type)
U.S.A 1984 made
Shop: Osu shop
Arrival: 2024-12-21 20:20:43
description
Maintained! Tubular power amplifier using 8 EL34s. It features a powerful, lively, and energetic sound, and can be enjoyed regardless of genre, such as classical music, jazz, or vocals. The output is also high and can play any speaker. The exterior is dull and has a feeling of use over time, but there are no noticeable scratches (Sasaki Shota) Maintenance information: 2024.12.21 Maintained by us (replaced due to AC cord damage. Right channel low frequency oscillation → constant voltage control transistors and diodes are replaced due to leaks and short circuits. Solder correction. The earth loosens and tightens. Output sound checked) 2024.11.10 Maintained by other companies (all vacuum tube legs and sockets have been cleaned and cleaned. Bias readjusted, set the LED to turn off at 4V output) Accessories: Other companies' repair statements Main specifications: 100W+100W frequency characteristics 20-20,000Hz-0.5dB SNR 96dB W483×H229×D521mm 36.3 kg

MQ60 CUSTOMJapan

This item has been sold.You can't purchase now. 24-44534-24613-00
MQ60 CUSTOM
Manufacture:LUXMAN
Original price: JPY 79,800
Price: JPY 152,727 Sold Out
Power amplifiers (tube type)
Japan 1972 made
Arrival: 2024-11-11 19:56:12
description
Internal and external maintenance has been completed in 2020, such as replacing the coupling condenser with an oil condenser, replacing the banana-compatible SP terminal, and replacing the vacuum tube (50CA10)! This model is based on the concept of making sounds even more straightforward than the MQ60. The warmth of the tone and the indescribable luster sound are truly lackstones. The exterior is scratched on the hood and transformer cover, and paint is peeling. Serial 4810364 (Fujisawa Yukishi) Maintenance information: 2020.8.25 maintained (50CA10 x 3, 12BH7 x 1, coupling capacitor, electrolytic capacitor, rectifier diode, semi-fixed resistor, RCA terminal, SP terminal, MT tube socket, fuse replacement. Gain VOL, impedance switching SW disassembly contact refinement, oxidation and sulfidation prevention grease coating circuit readjusted, input/output waveform confirmed, rated output tested) Accessories: No accessories Main specifications: used vacuum tube 50C-A10 x 4 12BH7A x 2 6267 x 1 EF86EH x 1 output 25+25W (4/8/16 ohm switch switching) speaker output 1 system W410 x H160 x D205 mm 13.8 kg

EL34プッシュプルJapan

This item has been sold.You can't purchase now. 24-44458-23857-00
EL34プッシュプル
Manufacture:ALC
Price: JPY 143,636(pair)Sold Out
Power amplifiers (tube type)
Japan
Shop: Osu shop
Arrival: 2024-12-14 20:09:58
description
The disposal price has been reduced. Member prices are not applicable. 2024/12/14 sales price 198,000 yen Maintained! EL34 push-pull mono power amplifier using a tango transformer. You can enjoy the thickness and sexy tone unique to vacuum tubes. Please try playing it as a set with a tube preamp. There is overall dullness and a feeling of use, but there are no noticeable scratches (Sasaki Shota) Maintenance information: 2024.12.14 Maintained (replaced due to output tube deterioration. The speaker terminal was replaced due to damage. Vacuum tube pin cleaning. Bias check. Output audio check. output 10W) Accessories: power cable Main specifications: output 10W+10W input sensitivity 200mV input impedance 600Ω W360 × H180 × D260 mm 12.6 kg (actual measurement)

MC240U.S.A

This item has been sold.You can't purchase now. 24-43671-17747-00
MC240
Manufacture:McIntosh
Price: JPY 408,182 Sold Out
Power amplifiers (tube type)
U.S.A 1960 made
Arrival: 2024-11-16 20:15:50
description
The price has been drastically reduced! 2024/11/16 Sales price 498,000 yen Refreshed and maintained, including block capacitor and electrolytic capacitor replacement! Comes with a hood. It is a famous machine with a velvet transformer, and you can enjoy rich sound with stable operation. The fresh, glossy tone in the mid to high range has a different appeal from the MC275. The exterior has dullness, scratches, etc. (Fujisawa Yukishi) Maintenance information: 2024.11.16 Maintained (left channel output transformer rewound repair, replacement of 2 block capacitors, replacement of 3 electrolytic capacitors, replacement of thermistors, replacement of 3 resistors, vacuum tube socket and RCA jack caulking repair) Accessories: No accessories Main specifications: 40W+40W 6L6GCPP vacuum tube 6L6GC × 4 12AX7 × 3 12AU7x2 12BH7 × 2 frequency characteristics 16 to 40,000 Hz dimensions W400 × D265 × H195 mm weight 25 kg

D75BU.S.A

This item has been sold.You can't purchase now. 24-43220-13738-00
D75B
Manufacture:MFA
Original price: JPY 780,000
Price: JPY 134,545 Sold Out
Power amplifiers (tube type)
U.S.A
Shop: Osu shop
Arrival: 2024-11-16 20:18:37
description
The disposal price has been reduced. Member prices are not applicable. 2024/9/12 sales price 298,000 yen Maintained! This model was the predecessor of the Redeemer WX-1P tubular power amplifier. The 6550 push-pull 5-pole connection makes a lot of noise and plays music vividly. The heater and B power supply are designed to be switched with a standby/operation switch. Bias adjustment with a meter is also easy to use, and you can adjust it yourself even when the vacuum tube is replaced (Yasuhito Koshihama) Maintenance information: 2024.11.16 Maintained (output tube replaced → running test performed.) 2024.9.12 Maintained (6 block capacitors replaced due to electrolyte condenser liquid leakage, mute switch replacement, bias switch cleaning, vacuum tube pin cleaning, bias and output sound checked. Output approx. 65W in AC 100V environment (5 connections) Accessories: power cable, circuit diagram, English manual, catalog Main specifications: output 75W+75W measured 65W+65W (5 connections) fixed bias method vacuum tube 6550 x 4 12AX7 x 2 6FQ7 x 2 OA2 x 2 W394 x H210 x D304 mm 29 kg
UsedUsed
ConsignedConsigned
HoldHold
ReservedReserved
Sold OutSold Out