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Manufacture:PENTA LABRATORIES
Price: JPY 11,818(pair)
- description
- It seems to be a vacuum tube made in China due to the pair tube direct heat triode structure PENTA LABRATORIES sorting sphere measurement value 62/62 (rejection value 38) *Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke) Accessories: none
- description
- The price has been drastically reduced. 2026.1.5 sales price 158,000 yen pair tube direct heat triode tube square getter measurement value 76/76 (rejected value 58) with original box, both tubes have few getters, but the tube is in good condition ※The pair is judged based on the gM value measured by the testing machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- A phono equalizer that makes it easy to enjoy analog records. You can enjoy an analog record player even with a premain amplifier (preamp) that does not have a PHONO input. The sharp, unobtrusive playback sound is attractive. The exterior has a feeling of use such as the left corner of the top surface and small scratches. Serial 22090948 (Murakoshi Yoichi) Maintenance information: 2026.1.12 sound output confirmed Accessories: power cord Main specifications: input sensitivity 2.5 mV (MM) /0.25 mV (MC) gain 46 dB (MM) /64 dB (MC) input load resistance 47 kΩ (MM) /2 to 47 Ω (MC) W60 × H100 × D230 mm 1 kg
- description
- *Currently sold. Tubular phono equalizer compatible with the MM type. Noise is reduced with a separate power supply configuration. The moist luster and warm sound quality are attractive. You can see the exterior, dullness, abrasions, etc. and a feeling of use (Murakoshi Yoichi) Maintenance information: 2026.1.12 sound output confirmed Accessories: power supply unit, power cord Main specifications: MM compatible NF type total gain 36 dB S/N ratio 83 dB vacuum tube 12AX7A [ECC83] x 2, input impedance 47 kΩ output impedance 23 kΩ frequency characteristics 10 Hz to 20 kHz [main body] W100 x H100 x D110 mm 0.6 kg [power supply unit] W130 x H70 x D220 mm 1.8 kg
- description
- The printing on the Hi-Fi base is scratched and erased on the Japan-sold triode output tube sold in 1 bottle ※Emissions have been measured and determined with the test machine EM-604 (Kojima Yosuke) Accessories: none
- description
- Selling 1 bottle eggplant tube straight heat triode tube engraved tea base made in Japan, measured value 68 (rejected value 42) *Measured values indicate gM values measured with the testing machine TV-7 (Kojima Yosuke) Accessories: none
- description
- Set of 2 Parathermal Triode Output Tubes Made in Japan The number of Hi-Fi getters has been slightly reduced ※Emissions have already been measured and determined with the test machine EM-604 (Kojima Yosuke) Accessories: none
- description
- Pair tube direct heat triode tube, white base, made in Slovakia, measured value 76/74 (rejected value 58) with original box*Pairs are determined based on gM values measured by testing machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- Pair tube direct heat triode tube, white base, made in Slovakia, measured value 72/70 (rejected value 58) with original box ※The pair is determined based on the gM value measured by the testing machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- Pair tube direct heat triode brown base black plate measured value 64/60 (rejected value 38) with original box*Pairs are determined based on gM values measured by testing machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- ※The condition of the 2 tubes is very different, so they are inexpensive (the structure is the same) Direct Thermal Triode American-made side getter measurement value 60/60 (rejection value 38) There is a burn on the tube head on one side ※The measured value indicates the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: none
- description
- ※The condition of the 2 tubes is very different, so they are inexpensive (the structure is the same) Direct Thermal Triode American Square Getter Measured Value 64/56 (Rejected Value 38) There is a burn on the tube head on one side, and the getter is thin*The measured values indicate GM values measured with the TV-7 testing machine (Kojima Yosuke) Accessories: none
- description
- Pair tube double triode tube American short base measurement value 104/94 (rejected value 50) with original box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- The price has been drastically reduced. 2025/12/17 sales price 99,800 yen Maintained by the manufacturer! Line-only premain amplifier using EL34. The sharp sound of the EL34 tube is impressive. It has a glossy tone unique to tube amplifiers with a modern sense of range and good response. There is a slight dent on the front (Daiki Goto) Maintenance information: 2025.12.17 Triode maintenance completed (JJ EL34 x 4 units were replaced, and various parts were inspected and maintained, including selector polishing.) Accessories: manual, power cable Main specifications: circuit type EL-34 ultra linear connection AB grade push-pull drive rated output 45W+45W (8Ω) SN-ratio 90dB vacuum tubes JJ EL34 x 4, 12AX7 x 1, 12AU7 x 2 speaker output terminals 6Ω/8Ω input 4 systems W330 x H150 x D315 mm 15 kg
- description
- Pair tube direct heat triode smoke, made in America, seems to be an OEM product for Canadian Marconi. Measured value 66/64 (rejected value 38) with original box*Pairs are determined based on values measured with the TV-7 testing machine (Kojima Yosuke) Accessories: original box (the box is damaged)
- description
- Pair tube direct heat triode smoke, made in America, seems to be an OEM product for Canadian Marconi, measured value 64/64 (rejected value 38) with original box*Pairs are determined based on values measured with the TV-7 testing machine (Kojima Yosuke) Accessories: original box (the box is damaged)
Manufacture:SUN VALLEY
Price: JPY 19,091(pair)
- description
- Pair tube Sun Valley sorting ball direct heat triode tea base made in China measured value 72/68 (rejected value 58) with original box*Pairs are judged based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- Set of 2 (special products are very different, so they are not treated as pairs), double triode tubes, American, measured value 118/100 (rejected value 50) with original box ※ measured values indicate gM values measured with the testing machine TV-7 (Kojima Yosuke) Accessories: original box (often damaged)
- description
- Pair tube double triode Russian reprint model measured value 120/120 (rejected value 50) with original box*Pairs are judged based on gM values measured by testing machine TV-7 (Kojima Yosuke)
- description
- Pair tube double triode Russian reprint model measured value 120/120 (rejected value 50) with original box*Pairs are judged based on gM values measured by testing machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- Pair tube double triode Russian reprint model measured value 118/114 (rejected value 50) with original box*Pairs are judged based on gM values measured by testing machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- Pair tube double triode tube 6188 equivalent tube black plate brown base measurement value 58/52 (rejected value 30) with original box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- Pair tube, double triode tube, 6188 equivalent tube, black plate, brown base, measured value 52/52 (rejected value 30), both tubes with original box are inexpensive because the number of getters has been reduced ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- Sold as 1 bottle, double triode tube, made in America, JAN brown base measurement value 80 (rejected value 32) *The measured value represents the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: none
- description
- It is thought to be made by Shuguang Electronics (China) due to the pair tube direct heat triode structure. Measured value 68/66 (rejected value 38) *Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke) Accessories: none
- description
- From the pair tube direct heat triode structure, the printing on the vacuum tube and base seems to be a reprint. Measured value 66/62 (rejection value 38) with white box*Pairs are judged based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: white box
Manufacture:International
Price: JPY 3,182(pair)
- description
- Pair tube double triode tube made in the Soviet Union measured value 112/108 (rejected value 50) with original box on one side has disappeared ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- Pair tube double triode tube, made in America, measured value 96/90 (rejected value 50) with white box ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: white box (can be written on)
- description
- Pair tube double triode power tube, made in America, JAN measured value 60/56 (rejected value 40) with original box ※Pairs are determined based on gM values measured by testing machine TV-7 (Kojima Yosuke) Accessories: original box
- description
- Sold in 1 bottle, double triode, Russian reprint model, measured value 120 (rejected value 50) with original box ※The measured values indicate gM values measured with the testing machine TV-7 (Kojima Yosuke) Accessories: original box
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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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