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Valve X-SEJapan

Ask 26-49514-08264-00
Valve X-SE
Manufacture:東京サウンド
Original price: JPY 70,000
Price: JPY 19,818
Japan
Arrival: 2026-04-11 19:49:24
description
Using a double triode vacuum tube push-pull system, it expresses dynamic sound not found in conventional headphone amplifiers that achieve “strength,” “richness,” and “dynamism.” There is a scratch on the front corner. Serial 25100003 (Fujisawa Yukishi) Maintenance information: 2026.4.11 operation confirmed Accessories: power cord Main specifications: output: 650 mW+650 mW vacuum tube used: 12AU7x2 input terminal: RCA1 system headphone terminal: standard jack (front), mini jack (rear) frequency characteristics: 10 Hz to 60 kHz residual noise: 0.1 mV or less W130 x H170 x D230 mm 3.4 kg

UTY-8Japan

Ask 26-49582-08945-00
UTY-8
Manufacture:UESUGI
Original price: JPY 1,040,000
Price: JPY 409,091(pair)
Japan 1992 made
Shop: Osu shop
Arrival: 2026-04-17 19:54:57
description
It's actually the first time in 15 years that it's been in stock! Maintained by the manufacturer in 2021. Triode mono amplifier incorporating KT88. The soft and thick characteristics of triodes are a perfect match between the realistic sound creation of wasugi. Perfect for classical sound sources, the exterior is good (Kojima Yosuke) Maintenance information: 2021 manufacturer maintained (single-sided output transformer exterior, sheet metal repair due to damage to chassis mounting part, paint treatment) 2026.4.17 Sound output operation confirmed Accessories: instruction manual, repair statement Main specifications: mono power amplifier serial 005/006 output 30W KT88×2, 12AU7, 12AX7A W435×H232 ×D175 mm 24kg/unit 

2A3 PREMIUM

This item has been sold.You can't purchase now. 26-49278-07510-00
2A3 PREMIUM
Manufacture:Golden Dragon
Price: JPY 7,273(pair)Sold Out
Shop: Osu shop
Arrival: 2026-04-17 19:49:44
description
Pair tube direct heat triode tube made in China measured value 64/62 (rejected value 38) with original box*Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke) Accessories: original box

45

This item has been sold.You can't purchase now. 26-49278-07484-00
45
Manufacture:UNITED ELECTRON
Price: JPY 9,091 Sold Out
Shop: Osu shop
Arrival: 2026-04-17 19:49:27
description
*Set of 2 (not treated as a pair due to the large difference in measured values between 2) Direct Thermal Triode Tubes, American, Measured Value 92/80 (Rejected Value 47) with white box*Measured values indicate GM values measured with the TV-7 testing machine (Kojima Yosuke) Accessories: white box (with writing)

V34Japan

Ask 26-35978-08975-00
V34
Manufacture:TRIO
Price: JPY 2,273
Japan
Arrival: 2026-04-16 19:49:41
description
TRIO retro look trio cartridges. Perfect as an introductory machine. The exterior has a feeling of use over time (Matsumoto Tsuyoshi) Maintenance information: 2026.4.16 sound output confirmed Accessories: none Main specifications: dead weight 6g

421A

Ask 26-49278-07955-00
421A
Manufacture:Western Electric
Price: JPY 9,091(only one piece)
Shop: Osu shop
Arrival: 2026-04-11 19:53:43
description
Sold as 1 bottle of Parathermal Dual Triodes Made in America LOT: 643? (The end is probably 9) Measured value 42 (rejected value 40) There is an adhesive mark at the junction between the base with the original box and the tube, and it is inexpensive because it makes a crackling sound inside the base*The measured value is determined based on the gM value measured by the testing machine TV-7 (Kojima Yosuke) Accessories: original box

2A3

Ask 26-49278-07448-00
2A3
Manufacture:Marconi
Price: JPY 6,364(only one piece)
Shop: Osu shop
Arrival: 2026-04-11 19:53:14
description
Direct heat triode tube sold in Canada, JAN square getter, measured value 64 (rejected value 38), there is slight burning inside the tube with the original box ※The measured value shows the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box

6SN7GT

Ask 26-49278-07981-00
6SN7GT
Manufacture:RCA
Price: JPY 10,000(pair)
Shop: Osu shop
Arrival: 2026-04-11 19:52:19
description
Pair tube, double triode tube, American black plate, square getter, measured value 108/104 (rejected value 50), with replacement box, all prints have disappeared, so it's cheap ※Pairs are judged based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: replacement box (with writing)

6DJ8

Ask 24-41972-03638-00
6DJ8
Manufacture:TUNG SOL
Price: JPY 4,091
Shop: Osu shop
Arrival: 2026-03-14 19:28:54
description
Sold 1 bottle ECC88 compatible spherical double triode tube, made in the Netherlands, measured value 90 (rejected value 62) with replacement box ※The measured values indicate gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: replacement box

46

Ask 25-48204-25130-00
46
Manufacture:GE
Price: JPY 2,727(only one piece)
Shop: Osu shop
Arrival: 2026-03-13 19:07:41
description
Direct thermal triode tube sold in America, made in America, VT-63 compatible ball fishing rod type filament measurement value 86 (rejection value 50) *The measured value indicates the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: none

6A3

Ask 25-48204-25124-00
6A3
Manufacture:RCA
Price: JPY 5,455(only one piece)
Shop: Osu shop
Arrival: 2026-03-13 18:57:10
description
Direct heat triode smoke, sold per bottle, seems to be an OEM product of tangsol due to its American-made structure. Measured value 68 (rejected value 38) *Measured values are shown with the TV-7 testing machine (Kojima Yosuke) Accessories: none

6B4G

Ask 26-48760-02599-00
6B4G
Manufacture:RAYTHEON
Price: JPY 16,364(pair)
Shop: Osu shop
Arrival: 2026-03-12 19:45:57
description
Pair tube direct heat triode smoke fishing rod filament, made in America, measured value 68/66 (rejected value 38), there is dirt on the tube with white box*The pair is determined based on the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: white box

101F

Ask 26-48957-05090-00
101F
Manufacture:Western Electric
Price: JPY 7,273(only one piece)
Shop: Osu shop
Arrival: 2026-03-12 19:45:47
description
Single sale direct heat triode lot: 6526 measured value 32 (rejected value 28) with white box ※The measured values indicate gM values measured with the testing machine TV-7 (Kojima Yosuke) Accessories: white box

6GA4

Ask 26-48760-02611-00
6GA4
Manufacture:TOSHIBA
Price: JPY 12,727(pair)
Shop: Osu shop
Arrival: 2026-03-12 19:45:21
description
Pair tube ambient heat triode output tube made in Japan Hi-Fi measurement value 70/70 (rejection value 40) There is dirt and writing on the tube with the original box ※The pair is determined based on the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box

2A3

Ask 26-48885-03140-00
2A3
Manufacture:不明
Price: JPY 10,000(pair)
Shop: Osu shop
Arrival: 2026-03-10 10:47:34
description
Pair tube direct heat triode tube made in China measured value 66/66 (rejected value 58) with white box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: white box

4300B

Ask 26-48760-03064-00
4300B
Manufacture:STC
Price: JPY 89,091(only one piece)
Shop: Osu shop
Arrival: 2026-02-05 20:06:45
description
The disposal price has been reduced. Member prices are not applicable. 2026/2/5 sales price 110,000 yen, sold per bottle, 300B equivalent tube, direct heat triode tube, English tea base code: 7420, measured value 64 (rejected value 58) with original box ※The measured value shows the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box

101F

Ask 26-48957-03653-00
101F
Manufacture:Western Electric
Price: JPY 20,000(pair)
Shop: Osu shop
Arrival: 2026-03-06 19:50:06
description
Pair tube direct heat triode lot: 113/813 measured value 36/34 (rejected value 28) with white box, both tubes are inexpensive because the getters are thin ※ pairs are judged based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: white box

PRIME 2A3

Ask 26-89024-00052-00
PRIME 2A3
Manufacture:SUNVALLEY
Price: JPY 11,818(pair)
Shop: Osu shop
Arrival: 2026-02-17 19:59:59
description
Pair tube direct heat triode Sun Valley sorting ball made in China measured value 58/56 (rejection value 38) There is a slight burn on the tube head ※The pair is determined based on the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: none

VT-52

Ask 26-48760-02596-00
VT-52
Manufacture:Westren Electric
Price: JPY 31,818(only one piece)
Shop: Osu shop
Arrival: 2026-02-06 19:51:51
description
Sold 1 bottle 45 Special Compatible Ball Direct Heat Triode Fishing Rod Type Filament Engraved Made in America Measured Value 116 (Rejected Value 55) with White Box ※Measured values indicate gM values measured with the TV-7 testing machine (Kojima Yosuke) Accessories: white box

6GA4

Ask 26-48760-02609-00
6GA4
Manufacture:TOSHIBA
Price: JPY 14,545(pair)
Shop: Osu shop
Arrival: 2026-02-06 19:43:43
description
Pair tube ambient heat triode output tube made in Japan Hi-Fi measurement value 76/72 (rejection value 40) with original box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)

300B

Ask 26-48760-02494-00
300B
Manufacture:JMTEC
Price: JPY 40,909(only one piece)
Shop: Osu shop
Arrival: 2026-02-05 20:06:38
description
Direct heat triode sold per bottle, made in Japan, double gettering measurement value 78 (rejected value 58) with original box ※The measured values indicate gM values measured with the testing machine TV-7 (Kojima Yosuke) Accessories: original box

300B

Ask 26-48760-02479-00
300B
Manufacture:CETRON
Price: JPY 81,818(pair)
Shop: Osu shop
Arrival: 2026-02-05 20:06:15
description
Pair tube direct heat triode made in America lot: 9107/9109 measured value 68/68 (rejected value 58) with original box, fewer getters on both sides (of which one side decreased drastically), tube burn on the head, and dirt on the tube*Pairs are judged based on gM values measured with the testing machine TV-7 (Kojima Yosuke) Accessories: original box

12BH7A

Ask 26-48635-01780-00
12BH7A
Manufacture:MATSUSHITA
Price: JPY 2,727(only one piece)
Shop: Osu shop
Arrival: 2026-01-24 20:00:05
description
Single sale double triode voltage amplifier tube, made in Japan, measured value 68 (rejected value 30) with replacement box ※The measured value shows the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: replacement box

2A3

Ask 26-33766-00211-00
2A3
Manufacture:CEI
Price: JPY 25,455(pair)
Shop: Osu shop
Arrival: 2026-01-05 20:01:53
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

50

Ask 26-33766-00229-00
50
Manufacture:RCA
Price: JPY 63,636
Shop: Osu shop
Arrival: 2026-01-05 20:01:52
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

50

Ask 26-33766-00230-00
50
Manufacture:RCA
Price: JPY 57,273
Shop: Osu shop
Arrival: 2026-01-05 20:01:51
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

6SN7GTB

Ask 24-42431-07086-00
6SN7GTB
Manufacture:SYLVANIA
Price: JPY 9,091(pair)
Shop: Osu shop
Arrival: 2025-12-28 20:06:20
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

6A3

Ask 24-41590-15627-00
6A3
Manufacture:TUNG SOL
Price: JPY 14,545(pair)
Shop: Osu shop
Arrival: 2025-12-26 20:06:34
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)

6A3

Ask 24-41590-15625-00
6A3
Manufacture:TUNG SOL
Price: JPY 14,545(pair)
Shop: Osu shop
Arrival: 2025-12-26 20:06:34
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)

6SN7GTB

Ask 25-48054-23584-00
6SN7GTB
Manufacture:TUNG SOL
Price: JPY 7,273(pair)
Shop: Osu shop
Arrival: 2025-12-20 19:59:22
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)
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