Thorough maintenance was carried out, such as replacing capacitors and deteriorated parts! A custom model whose circuit was changed from the original to a non-feedback amplifier. The output drops by 5W+5W compared to the MQ60, but surprisingly, this one has a better amount of noise, and the sound quality is clean. The appeal is that it is easy to grasp the sense of localization. The exterior has a feeling of use such as dullness. Serial 40401535 (Tomonori Asaine)
Maintenance information: 2024.10.27 Maintained (vacuum tube socket, block capacitor, electrolytic capacitor, oil capacitor, SP and RCA terminals, semi-fixed VR, fuse, spark killer, diode, micro SW replacement. Load test, input/output waveform confirmation impedance switching SW/gain VOL decomposition contact refinement, application of anti-oxidation/sulfidation grease, input/output waveform confirmation, load test (1kHz sine wave, at 8Ω load: 25W+25W), sound output test)
Accessories: none
Main specifications: 50CA10 push-pull output 25W+25W (4/8/16Ω) 50CA10 x 4/12BH7A x 2/6267 W410 x H160 x D205 mm weight 14 kg
The 25th anniversary model (copper nameplate resale type) of the SV-2A3 is in stock for the first time! 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 (Murakoshi Yoichi)
Maintenance information: 2024.10.22 sound output confirmed
Accessories: none
Main specifications: rated output 3.5W+3.5W vacuum tube 2A3 (PSVANE) x 2 6SN7GTB (TUNG-SOL) x 2 5U4G x 1 (Akebono) W360 x D210 x H190 mm 16 kg
The disposal price has been reduced. Member prices are not applicable. 2024/9/12 sales price 298,000 yen Maintenance completed! Redeemer tube power amplifier with MFA D75B power amplifier changed to triode tube connection specifications. It is designed to pursue pure tone with Class A operation. 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: 2024.9.12 maintenance completed (6 block capacitors replaced due to electrolyte condenser fluid leak, mute switch, RCA jack replacement bias switch cleaning, vacuum tube pin cleaning*Bias and output sound checked. Output approx. 25 W in AC 100V environment (3 connections)
Accessories: power cable, circuit diagram, catalog
Main specifications: output 20W+20W actual measurement 25W+25W (3 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
The disposal price has been reduced (member prices are not applicable). 2024/10/3 sales price 178,000 yen Maintenance completed! The relaxing sound allows you to enjoy the real thrill of an analog-style vacuum tube amplifier, and you can enjoy classical music for a long time without fatigue even with strong low frequencies. Even speakers that tend to be tight, such as diamond tones, loosen up well and make sound.
Maintenance information: 2024.10.3 maintained (GE 6550 x 4 output tubes replaced, contact cleaning due to poor input volume contact, bias readjusted by changing the bias circuit due to excessive current flow to the output tube, contact cleaning for all vacuum tube sockets and pins, internal and external cleaning, specification inspection
Accessories: copy of instruction manual
Main specifications: Vacuum tube used KT88 x 4 ECC82 x 2 ECC85 x 2 50 W+50 W size W410 x H175 x D250 mm weight 18.3 kg
The disposal price has been reduced! (Member discounts are not applicable) 2024/10/4 sales price 178,000 yen Maintained! The relaxing sound allows you to enjoy the real thrill of an analog-style vacuum tube amplifier, and you can enjoy classical music for a long time without fatigue even with strong low frequencies. Even speakers that tend to be tight, such as diamond tones, loosen up well and make sound. The exterior is dull and has a feeling of use (Shota Sasaki)
Maintenance information: 2024.10.4 maintained (1 Lch output tube 6550 replaced due to defective replacement, same cathode resistor disconnection, contact cleaning due to poor input volume contact, vacuum tube socket and pin cleaning, internal and external cleaning, bias readjustment, specification inspection)
Accessories: manual
Main specifications: Vacuum tube used KT88 x 4 ECC82 x 2 ECC85 x 2 50 W+50 W size W410 x H175 x D250 mm weight 18.3 kg
Maintained! American Golden Tube Audio tube power amplifier. The 5881/6L6GC para single operation achieves high power of 40 w/ch. You can enjoy the fresh vacuum tube sound. ※The hood is not included. As for the exterior, there are dullness and small scratches on the main body. Serial 03314 (Yonejima Satoshi)
Maintenance information: 2024.10.23 Maintained (primary side fuse replacement, wiring styling repair, vacuum tube pin cleaning, damaged screw replacement. Replace and add resistors, and reinstall LEDs. Bias adjustment output audio check)
Accessories: No accessories
Main specifications: 5881 para single 40W+40W (8Ω) W430 x H210 x D360 mm 20 kg
Maintained by the manufacturer! EAR has a bewitching tone and a unique presence. It is an amplifier with a high degree of perfection, and has clear, fresh expressive power and a gentle tone typical of a tube amp, and has excellent spatial expression. The luster of vocal music and string music is unrivaled. The exterior is dull, has small scratches, and the plastic cover on the speaker terminal is missing, but there is no problem with use (Kojima Yosuke)
Maintenance information: 2024.4.19 manufacturer maintenance completed (8 electrolytic capacitors, 4 resistors, fuse holder replacement, cleaning due to poor contact with output tube pins, first stage cleaning due to poor contact with vacuum tube socket)
Accessories: power cable
Main Specifications: Maximum output: 32W x 2 (8Ω) 64W (8Ω) mono output impedance: 4Ω, 8Ω Frequency characteristics: 20Hz to 20kHz Input sensitivity: 500mV Input terminals: RCA1 system, 1 XLR balance system W400 x D420 x H150 mm 32 kg
The price has been drastically reduced! 2024/10/19 sales price 278,000 yen All deteriorated parts have been replaced and fully maintained! Tubular high power amplifier. Create a tasteful sound where you can enjoy the sharp bass that echoes in your stomach and the afterglow of the treble unique to tube balls. The 38cm system can also make enough noise with this one unit, and the ample driving power is also attractive. There are paint peeling and scuff marks on the exterior. Also, the SP terminal has been replaced and the power supply unit has been changed to an inlet. Serial 110430 (Fujisawa Yukishi)
Maintenance information: 2024.10.19 Maintained (SP terminal 4Ω only → replaced with a 4-16Ω terminal block. Replace it with a type with an RCA jack plate. AC cord missing for 3P added. Vacuum tube 12AX7 deterioration replacement. 1/2W noise suppression resistor replacement Replace 47 μF and 4 other deteriorated electrolytic capacitors. Replace 4 0.47 μF deteriorated film capacitors. Ceramic capacitor 360pF and other deterioration replacement. IC chip defect replacement. Added 1/2W meter adjustment resistor. Vacuum tube socket caulk repair. BIAS and meter sensitivity readjusted. *Operation has also been checked with AC 100V (rated output 78W, measured at SP:8Ω) *This model sometimes emits a small amount of noise during operation, but this is within the specs)
Accessories: power cable
Main specifications: tubular stereo power amplifier 110W+110W (8Ω) frequency characteristics 5Hz-150kHz output impedance 0.5Ω or less W410 × H217 × D386mm 34 kg
The interior has been overhauled! This time, an RCA input terminal has been added to make it easy to use, and it is a convenient specification that links the 2 units with the power switch on the top of the case. A longer speaker cable is also included, so you can use it right away. The Altec Green self-made case is also great. I thought it was a clean sound, but surprisingly, the bass is thick and plump, which is impressive. You can hear the beautiful voice of bloody and luscious vocals with an attractive tone that makes you forget time and listen attentively (Sasaki Shota)
Maintenance information: 2024.10.20 Maintained (block capacitor 40/40/20/20 μF hum noise replacement 3 pieces, vacuum tube 6L 6G deterioration replacement, vacuum tube 5U 4GB deterioration replacement. Block Capacitor 40/40/20/20 μF Defect Replacement/Front Lamp Defect Replacement ◎ Common/ 1W Resistance Replacement/ Made in the US, 2 x 2, BIAS Readjustment/ Vacuum Tube Socket and RCA Jack Caulking Repair) 2012.4.14 Maintained (Each Capacitor Inspection, Replacement, Bias Adjustment, Volum Replacement, RCA Pin Jack Installation. Wiring Bleeder Resistors, Wiring Deterioration Replacement, Each Voltage. Operation Check: Some Transformers (There is magnetic flux leakage, 1 kHz 36.12 W noise 0.9 mVLR)
Accessories: none
Main specifications: tubular mono power amplifier rated output AC 100 to 117 V, 17 to 34 W (measured at SP: 8 ohms) 6L 6G push-pull peerless transformer
Maintained! A simple Sanei Radio tubular single kit amplifier with 6L6GC loaded into the power tube. It has a mild, moist tone, and seems to go well with full-range speakers. There is paint peeling on the exterior. (FUJISAWA KOSHI)
Maintenance information: 2024.10.20 Maintained (input VR replacement, resistance and some wire replacement, solder correction, vacuum tube pin cleaning. (Removal of foreign matter, bias adjustment, output sound check)
Accessories: No accessories
Main specifications: output approx. 6W+6W 8Ω vacuum tube 6L6GC, 12AU7 W415 x H180 x D220 mm 12 kg (actual measurement)
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: 2024.6.21 Maintained (vacuum tube sockets, block capacitors, electrolytic capacitors, oil capacitors, 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 vulcanization 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)
Accessories: copy of instruction manual
Main specifications: 30W+30W 50CA10 push pull W410 x H160 x D205 mm 13.8 kg