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1
Manufacture:ZAIKA
Price: JPY 297,273(pair)Sold Out
- description
- The price has been drastically reduced. 2026/1/27 sales price 348,000 yen Maintained! ZAIKA 300B single mono power amplifier. While increasing bandwidth, it has musical distortion characteristics centered around 300B's unique secondary distortion, and can be enjoyed regardless of genre with tuning that maximizes 300B likeness. The vocals are particularly good. The appearance is fine, with no noticeable scratches, etc. (Kobayashi Hitoshi) Maintenance information: 2026.1.23 Maintained (oxide film removal, solder repair, earth repair, rectifier tube replacement, +B voltage check, vacuum tube pin cleaning, wire insulation treatment, bias check, ham balance adjustment, output sound check (output 6W: 8Ω)) Accessories: none Main specifications: 6W mono 300B x 2 5U3C x 2 310A x 2 W230 x H210 x D400 mm 13.5 kg (actual measurement)
- description
- 2019 restored model! The original model 8 is now in stock! This is a famous gem that has both thickness and sex appeal while making a quick sound. There is no boomy sound, which is a drawback of vacuum tube amplifiers, and it is a vintage sound that is still popular today due to its good tone and good balance. The exterior is in a state where there is a feeling of use such as dullness and friction over time. ※The hood is out of stock. Serial 2494 (Yamato Yuki) Maintenance information: 2019.9.21 Maintained (replaced due to defective block capacitors. Electrolytic capacitors were replaced with SPRAGUE ones. SP terminal deterioration replacement. Foot leg damage and deterioration replacement. BIAS reconditioned vacuum tube socket and RCA jack caulk repair. Other operations have been checked) Accessories: none Main specifications: 117V specification vacuum tube EL34 (TELEFUNKEN x 4), 6CG7 x 2, 6BH6 x 2 output 35W+35W W346 x H192 x D250 mm 21.9 kg
- description
- 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
- description
- From the condenser to the socket volume, 56 deteriorated parts have been replaced, the switch volume has been completely dismantled, the contacts have been repolished, etc., and it has been completely overhauled! *The output tube has been replaced from 8045G to KT88. Furthermore, the speaker terminals have been replaced to improve convenience. It makes an overwhelming sound even when compared to the company's A series and MQ series (Daiki Goto) Maintenance information: 2026.1.23 maintained (vacuum tube (6240G), vacuum tube socket ✕ 12, capacitor ✕ 18, resistor ✕ 2, RCA terminal, semi-fixed VR, spark killer ✕ 4, SP terminal, diode ✕ 16, micro SW ✕ 4, fuse, power cord replacement. The board was re-soldered and the input gain VR disassembled and cleaned. Load test (at 1kHz, 8Ω load: 60W for both). Check input/output waveforms and perform sound output checks. SW/VOL disassembly contacts are re-polished and grease is applied to prevent oxidation and sulfidation. Input/output waveform confirmation, load test (1 kHz sine wave, 8 ohm load: 60W+60W, OK), sound output test.) Accessories: manual Main specifications: Vacuum tubes used, KT88, 2 12AU7, 1 6240G, 2 12AX7, 1 W370 x H170 x D240 mm, 16 kg
- description
- The disposal price has been reduced. Member prices are not applicable. 2026/1/19 sales price 148,000 yen 13 resistors, maintenance included, RCA terminal replacement included! A rare 100V specification this time too! DYNACO's tubular mono power amplifiers are highly popular. The sleek, straight, and energetic sound that comes out of the small body is attractive. Combinations with Altech and JBL are a staple, and they make jazz and rock sounds powerful and full of realism. There is dullness over time, rust, etc. (Oikawa Tetsuji) Maintenance information: 2026.1.19 Maintained (2 input RCA terminals replaced and changed to 100V specifications, soldering inspection and board correction were performed, a complete set of output tube pair tubes and 1 6AN8 vacuum tube was replaced, 13 carbon resistors and 8 metal oxide film resistors were replaced, bias volume and MT tube sockets were cleaned, and the final operation confirmation including checking the characteristics of an 8Ω load of 56 to 60 W at 100V was completed) Accessories: copy of instruction manual Main specifications: tubular mono power amplifier using vacuum tube 6550/5AR4/6AN8A output 60W/140W W229 × H190 × D229 mm 11.5 kg
- description
- The internal parts have been thoroughly reviewed and brushed up! This is the famous MQ60 power amplifier with the main part of the SQ38F independent. The natural, smooth sound quality with a high sense of transparency is attractive. You can relax and enjoy classical music and vocals in a natural way. The deep sound quality that cannot be expressed with the latest vacuum tube amplifiers is exceptional. There is dullness (Daiki Goto) Maintenance information: 2025.12.30 Maintained (all wiring from RCA terminal → VR → amplifier input replaced, running test) 2025.10.15 Maintained (vacuum tube (6267), vacuum tube socket, oil capacitor, electrolytic capacitor, film capacitor, RCA terminal, semi-fixed VR, spark killer, SP terminal, diode, micro SW, fuse replacement. Load test (8Ω load 1kHz 25W+25W), input/output waveform confirmation, sound output check performed.) Accessories: copy of the manual Main specifications: output 30W+30W dimensions W410 x H160 x D205 mm weight 13.8 kg
- description
- Refresh yourself with an overhaul such as replacing vacuum tube sockets and capacitors! After all, the warm and glossy sound quality is excellent for stringed instruments. It has a soft and vivid sound not found in transistors, making it perfect for listening for long periods of time. The exterior has dullness, small scratches, etc. Serial E1800423 (Fujisawa Yukishi) Maintenance information: 2025.12.9 Maintained (replaced due to defective vacuum tube (6240G). The bias, DC balance, and distortion have been adjusted again. Load test (8Ω load 1kHz 24W+24W), input/output waveform check, sound output check performed) 2025.11.18 maintained (vacuum tubes (50CA10 x 4 pieces), 4 vacuum tube sockets, 4 electrolytic capacitors, 2 film capacitors, 4 oil capacitors, 2 RCA terminals, 8 semi-fixed VR, 2 spark killers, SP terminals, 5 diodes, micro SW, fuse, power cord replacement. Load test (8Ω load 1kHz 24W+24W), input/output waveform confirmation, sound output check) Accessories: No accessories Main specifications: 50CA10 push-pull output 30W+30W W410 x H183 x H160 mm 13.8 kg
- description
- The interior has been thoroughly reviewed, such as replacing the vacuum tube socket and condenser, and has been refreshed with a bu-overhaul! After all, the warm and glossy sound quality is excellent for stringed instruments. It has a soft and vivid sound not found in transistors, making it perfect for listening for long periods of time. The exterior is dull. Serial 811243 (Tomonori Asaine) Maintenance information: 2025.8.11 Maintained (vacuum tube (50CA10×4), vacuum tube socket, electrolytic capacitor, film capacitor, RCA terminal, semi-fixed VR, spark killer, SP terminal, diode, micro SW, fuse replacement. Load test (8Ω load 1kHz 25W+25W), input/output waveform confirmation, and sound output check *About the NFB changeover switch This unit is equipped with an NFB changeover switch so that you can select the desired sound quality. (However, if you operate this switch during operation of this unit, shock noise will occur, so be sure to turn off the NFB ON-OFF before switching the power switch.) Accessories: none Main specifications: 50CA10 push-pull output 30W+30W W410 × H183 × H160 mm 13.8 kg
- description
- Maintenance completed in August 2020. Internal and external maintenance has been completed, such as replacing a coupling condenser with an oil condenser, replacing a banana-compatible SP terminal, and replacing a 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. You can see the exterior, dullness, scuff marks, paint peeling, etc. (Kobayashi Hitoshi) 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: none 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
- description
- Maintenance was carried out with attention to detail, such as replacing capacitors and replacing SP terminals! 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. Sounds that don't require scale are particularly unique, and the slight thickness that spreads from below the mid-range makes you feel comfortable and relaxed (Sasaki Shota) Maintenance information: 2025.7.25 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 tests, input/output waveform checks, and sound output tests are OK. Vacuum tube sockets, block capacitors, electrolytic capacitors, oil capacitors, SP and RCA terminals, semi-fixed VR, fuses, spark killers, diodes, micro SW replacement. Load test, input/output waveform confirmation, load test (1 kHz sine wave, at 8 ohm load: 25W+25W, actual measurement), sound output test OK.) Accessories: none Main specifications: 30W+30W 50CA10 push pull W410 x H160 x D205 mm 13.8 kg
- description
- In 2024/7, maintenance was carried out with attention to detail, such as capacitor replacement and SP terminal replacement! 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 has rust, oxidation, and scratches. Serial 574788 (Tomoho Asaine) Maintenance information: 2024.7.11 Maintained (vacuum tube sockets, block capacitors, electrolytic capacitors, oil capacitors, SP and RCA terminals, semi-fixed VR, fuse holder replacement. Check input/output waveforms and perform sound output checks. Impedance switching SW, gain VOL complete disassembly, contact refinement, and application of grease to prevent oxidation and sulfidation. Input/output waveform confirmation, load test (1 kHz sine wave, at 8 ohm load: 27W+27W, actual measurement), sound output test) Accessories: none Main specifications: 30W+30W 50CA10 push pull W410 x H160 x D205 mm 13.8 kg
- description
- Vacuum tube sockets, block capacitors, electrolytic capacitors, oil capacitors, SP and RCA terminal replacements, SW and VOL disassembly contact polishing, oxidation and sulfidation prevention grease coating, etc., have been refreshed and maintained. 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. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi) Maintenance information: 2025.6.28 maintained (impedance switching SW/gain VOL disassembly contact polish, oxidation/sulfidation prevention grease application, input/output waveform confirmation, load test (1kHz sine wave, 8Ω load: 20W+20W confirmation) sound output test) 2025.6.26 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 20W+20W), input/output waveform confirmation, sound output check performed) Accessories: none Main specifications: used vacuum tube 50CA10 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
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Hi-Fi Do Record Shops Softs, Audio parts and Tubes can ship overseas.Ordinary,we use EMS but for large order,we use SAL or Surface.For Asia,it cost 1,200JPY/1LP,900JPY/1CD.Please check at the shipping cost table for more detail.
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