Pair tube (checked with a tube checker) beam quadrupole. There is a tea box. Measured value 36,34/30 (rejection value) *The pair was determined based on the GM value measured by the testing machine TV-7. The ※ logo is scratched, so it's a bargain.
Pair Tube Bi-triode Power Tube Made in USA JAN Measurement Value 60/60 (Rejection Value 40) With Original Box ※ The pair is judged based on GM value measured on the tv-7 test machine (Yosuke Kojima)
Accessories: original box
Pair Tube Bi-triode Power Tube Made in USA JAN Measurement Value 60/60 (Rejection Value 40) With Original Box ※ The pair is judged based on GM value measured on the tv-7 test machine (Yosuke Kojima)
Accessories: original box
Pair tube, subthermal beam tube, made in China, seems to have been used in the company's power amplifiers, etc. Measured value 68/66 (rejected value 44) with replacement box*The pair is determined based on the gM value measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: replacement box
Single sale direct heat triode tube, made in Russia, white base, measured value 78 (rejected value 58) with original box ※The measured values indicate gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube, subthermal beam tube, made in China, seems to have been used in the company's power amplifiers, etc. Measured value 66/64 (rejected value 44) with replacement box*Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: replacement box
Pair tube, EL84 compatible ball, pentode tube, made in Japan, measured value 84/80 (rejection value 50), both tubes have pin bends ※ pairs are determined based on GM values measured with test machine TV-7 (Kojima Yosuke)
Accessories: none
Pair Tube Bi-triode Power Tube Made in USA JAN Measurement Value 60/60 (Rejection Value 40) With Original Box ※ The pair is judged based on GM value measured on the tv-7 test machine (Yosuke Kojima)
Accessories: original box
Pair tube 6SL7 equivalent tube military tube brown base ring getter measurement value 52 (rejected value 32) with original box ※The measured value shows the gm value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube 6BQ5 high reliability tube made in Japan measured value 72/68 (rejection value 46) *Pairs are determined based on GM values measured with the TV-7 test machine (Kojima Yosuke)
Accessories: none
*Currently sold. Slim small 2-way speaker It is an SP originally developed for AV surround, but its high quality deserves attention. It has a quality that can be used for various purposes as a sub or desktop. There are large and small dents on the exterior and the saran net on one side, and a feeling of use such as dullness, abrasions, etc. can be seen (Kobayashi Hitoshi)
Maintenance information: 2024.5.2 operation confirmed
Accessories: none
Main specifications: 2 way 3 speakers, bass reflex type, anti-magnetic type, 57mm woofer x 2, 57mm tweeter x 1, frequency characteristics, 75 Hz to 20 kHz, impedance 6 ohms, dimensions W85 x H405 x D100 mm, weight 2.6 kg
TV rack with unknown details. The upper top plate is attached to glass, and there are 2 casters on the back (2 legs in the front), 1 shelf board is about 18 mm thick, and the lower dowel has 3 places at intervals of about 32 mm. There is a feeling of use such as scratches, dents, etc., and the back plate is cut off quite a bit (Takasaki Atsushi)
Accessories: 1 shelf
Main specifications: Outer dimensions approx. W800 × H500 (450 excluding casters and legs) × D400 (upper top plate 355) mm Upper inner dimensions approx. W750 × H130mm Lower inner dimensions approx. W750 × H255 mm Approx. 25 kg
Pair tube KT88 compatible sphere Russian metal brown base measurement value 50/50 (rejection theory 44) there is writing on the base with the blue box ※The pair is determined based on the GM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: blue box
Pair tube, large beam output tube, 8147 compatible bulb, gray plate for Hi-Fi, with original box (outer box/inner box), has slightly decreased getter for both tubes ※ The pair measures and determines EM values with the measuring machine TC-162 (Kojima Yosuke)
Accessories: original box
※It has been replaced with a cloth edge. An improved version of the compact and popular blockbuster model CONTROL1. It is a speaker that can be used in a variety of ways, from pure audio to surround sound. There is a crack in the rubber part of the saran net (Oikawa Tetsuji)
Maintenance information: 2024.5.3 operation confirmed
Accessories: none
Main specifications: 2 way 2 speakers bass reflex bookshelf type 4Ω 125W W157 x H233 x D143 mm 1.8 kg
Comes with original box! This is an 8cm full range unit from MarkAudio's ALPair series. It is a self-made unit that is attracting attention because of its technical ability, which has been produced with high accuracy, and has advanced playback capabilities, such as precise and delicate high frequencies. (FUJISAWA KOSHI)
Maintenance information: 2024.5.2 operation confirmed
Accessories: original box
Main Specifications: 8cm full range speaker 4Ω 95-30,000 Hz 85.45dB 10W
Pair tube 6BQ5 compatible ball pentode tube made in Russia, black plate, measured value 78/72 (rejection value 50) with original box ※ pair is determined based on GM values measured with test machine TV-7 (Kojima Yosuke)
Accessories: original box
※There is a TELEFUNKEN ECC803S, but from the structure, it was determined that the printing was a reprint. The plate is not a box type, but only one side of the rib plate is rib plate sold per bottle ECC83/M8137 equivalent tube measurement value 36 (rejection value 32) with replacement box*The measured value represents the GM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: replacement box
※The sound output operation has been confirmed, but there is a slight band gap, and since it is cheap, it will be handed over as is. Trio quadruple varicon-type FM/AM tuner. The high range is moderate, but the fresh, thick sound that is difficult to obtain with a synthesizer tuner is attractive. The exterior has spots, small scratches, and rust spots (Mizusaki Ryo)
Maintenance information: 2015.3.4 manufacturer maintenance (The detection circuit offset has been adjusted. Other adjustments have been made to RF, detection, VCO, separation, meter, etc. (There is a contact problem with the switch and volume, but since parts are not available, the contacts have been cleaned)
Main specifications: W430 x H149 x D376 mm 8 kg
The flat characteristics make the sound good and are delicate. The sound quality is relatively thick among Audio-Technica models, and I like it without losing too much weight. The cantilever is slightly to the right. There is dirt and dullness (Hiura Katsuji)
Maintenance information: 2024.2.23 sound output confirmed
Accessories: none
Main specifications: mm type output voltage 4 mV needle pressure 0.75 to 1.75 g oval needle self weight 9 g
Pair tube, 6BQ5 compatible ball, made in Yugoslavia, foot, measured value 70/70 (rejected value 50) with original box ※ pair is determined based on GM values measured with test machine TV-7 (Kojima Yosuke)
Accessories: original box
※There is a TELEFUNKEN ECC803S, but from the structure, it was determined that the printing was a reprint. The plate is not a box type, only one side of the rib plate is rib plate sold per bottle ECC83/M8137 equivalent tube measurement value 38 (rejection value 32) with replacement box ※ The measured value represents the GM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: replacement box
The power cable uses DIP FORMING oxygen-free copper wire with HSE treatment, which is an advanced burn-in treatment, applied to the 1.8 m conductor. The S/N is extremely high, and the strong sound in the low range is also an extremely attractive, high cost performance model. There is a film defect on part of the sheath (Kojima Yosuke)
Accessories: none
Pair tube smoke made in Canada JAN measured value 86/76 (rejected value 46) with original box*Pairs are judged based on gM values measured by testing machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube 6BQ5 compatible ball pentode tube measurement value 66/66 (rejection value 50) with original box SIEMENS print is printed, but it was determined from the structure and date code that it was made by Ei (made in Yugoslavia) ※The pair was determined based on GM values measured with the TV-7 testing machine (Kojima Yosuke)
Accessories: original box
※There is a TELEFUNKEN ECC803S, but from the structure, it was determined that the printing is CV4004, the printing is a reprint. The plate is not a box type, only one side of the rib plate is rib plate sold per bottle ECC83/M8137 equivalent tube measurement value 44 (rejection value 32) with replacement box ※ The measured value represents the GM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: replacement box
※There is a TELEFUNKEN ECC803S, but from the structure, it was determined that the printing is CV4004, the printing is a reprint. The plate is not a box type, only one side of the rib plate is rib plate sold per bottle ECC83/M8137 equivalent tube measurement value 42 (rejection value 32) with replacement box ※ The measured value represents the GM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: replacement box
Sold per bottle, general purpose amplifier tube, top mark, JAN, made in America, measured value 38 (rejected value 28), with replacement box (the lid of the box is missing) *The measured values are values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: replacement box
Vacuum tube graphic equalizer in the ONTOMO MOOK appendix. 5 bands (55, 220, 880, 3.5 k, 14 kHz) can be adjusted by ±8 dB. Comes with an ON/OFF switch for the GEQ function, making it easy to play. The exterior is dull (Yonejima Satoshi)
Maintenance information: 2024.5.5 operation confirmed
Accessories: power cord
Main Specifications: Input Impedance: 500 kΩ Output Impedance: 330 Ω Frequency Characteristics: 20 to 100 kHz S/N Ratio: 100 dB Crosstalk: 80 dB or less W183 x H120 x D88 mm (including knobs and terminals)
Pair tube direct heat triode made in Russia measured value 72/72 (rejected value 38) *Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: none
One-piece rectifier tube, fishing rod type filament made in China, incorporates the structure of the original WE274 and is well-built. Measurement value 56 (rejected value 40) with replacement box ※ The measured value shows the GM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: replacement box
The price has been reduced. 2024/3/3 sales price 15,000 yen*Currently sold. Yamaha superwoofer equipped with a 20 cm x 2 double woofer. Equipped with active servo technology and a 150W high-power amplifier, it plays bass that is small yet full of volume. There is dirt, dirt and dullness on the exterior, and some floating on the bottom. Serial Z117079QS (Tamura Eiji)
Maintenance information: 2024.3.3 sweep test is good
Accessories: No accessories
Main specifications: used unit 20 cm cone type x 2 rated output 150 W (5 Ω) playback frequency band 20 Hz to 160 Hz high cut filter 40 Hz to 140 Hz, continuously variable W235 x H602 x D463 mm 20 kg
Pair tube, ambient heat beam tube, made in America, JAN measurement value 42/40 (rejected value 25) with white box ※Pairs are determined based on GM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: white box
*Currently sold. BOSE's high cost performance model for a wide variety of applications. It reproduces sounds unique to BOSE that are powerful and sharp, such as jazz, rock, etc. You can feel the spread of the sound by swapping the position of the tweeter left and right and listening. Overall, there is dirt and a feeling of use. Serial 017958921760022AC, 017958921760021BC (Fujisawa Yukishi)
Maintenance information: 2024.5.6 operation confirmed
Accessories: saran net
Main specifications: 2 way 2 speakers, 8 ohms, maximum input 60 W, W380 x H240 x D170 mm, 3.9 kg
Pair tube triode for Hi-Fi made in Japan*Pairs are determined based on EM values measured with the test machine EM-604 (Yosuke Kojima)
Accessories: none
A set of 2 seems to be a choke transformer, but the details are unknown. Measured DC resistance value 380/373Ω W31H95 x 44mm 0.31 kg/piece (actual measurement, not including protrusions), only conduction and resistance values have been confirmed by a tester (Kojima Yosuke)
Accessories: none
Set of 2 (the internal shape seems to be the same, but the manufacturer country print is different (made in Canada/USA), so they are not treated as a pair), brown base measurement value 44/42 (rejected value 25), getta burns, and decreases) *Measured values indicate GM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube metal brown base Russian dharma tube measured value 60/58 (rejected value 44) with white box, printing on one side often disappears ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box
Shure's final high-end cartridge model. It has a smooth sound that is different from the thick, jazz-friendly series, and vocals and classical music are carefully reproduced. There is a slight feeling of use (Takasaki Atsushi)
Maintenance information: 2024.3.7 sound output confirmed
Accessories: none
Main specifications: mm type oval needle frequency band 20 Hz to 22 kHz needle pressure 0.75 to 1.5 g (appropriate 1.25 g) dead weight 7 g
Pair tube ambient heat beam tube black base lot: 9825/9825 measured value 58/58 (rejection value 44) with white box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube ambient heat beam tube made in Japan Hi-Fi measurement value 46/44 (rejection value 25) with original box (inner box/outer box) *Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: original box (inner box/outer box)
Pair tube ambient heat beam tube black base lot: 9825/9825 measured value 74/72 (rejection value 44) with white box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube ambient heat beam tube black base lot: 9825/9825 measured value 62/60 (rejection value 44) with white box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube Russian reprint model lot: 1609/1610 measured value 56/54 (rejected value 44) with original box*Pairs are judged based on gM values measured by testing machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube large transmission tube direct heat triode tube made in China gold base gold foot measured IP value 47mA/47ma (the best standard IP value for this amplifier is 50mA) with original box (part of the box is damaged) *Sound is checked with a test amplifier, plate current values have been measured, and it has been determined that operation is good (Kojima Yosuke)
Accessories: original box
※ Because it is cheap, it is currently sold. Switchable tone controller. You can adjust the low and mid high range tones according to the frequency characteristics of the system (Daiki Goto)
Maintenance information: 2024.5.7 operation confirmed
Accessories: instruction manual, power cable
Main specifications: variable frequency low range 30/60/120 Hz, medium and high frequency range 5K/10K/15 kHz
Pair tube VT-115 equivalent tube, high durability tube, metal tube, tea base, measured value 48/46 (rejected value 25) with white box ※Pairs are determined based on GM values measured with the TV-7 testing machine (Kojima Yosuke)
Accessories: white box
Pair tube VT-115 equivalent tube, high durability tube, metal tube, tea base, measured value 46/44 (rejected value 25) with white box ※Pairs are determined based on GM values measured with the TV-7 testing machine (Kojima Yosuke)
Accessories: white box
Pair tube, 6L6GC compatible ball, high reliability tube, made in America lot: 8526/8526 measured value 44/42 (rejected value 25) with replacement box ※ pair is determined based on GM values measured with test machine TV-7 (Kojima Yosuke)
Accessories: replacement box