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Manufacture | Model/Title | Price | Arrival date

350B

Ask 25-48054-23400-00
350B
Manufacture:GOLDEN DRAGON
Price: JPY 7,273(pair)
Shop: Osu shop
Arrival: 2025-12-19 19:53:49
description
Pair tube, 6L6 equivalent tube, made in China, measured value 38/38 (rejected value 31) with original box ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box

ECC82

Ask 25-48407-25949-00
ECC82
Manufacture:TELEFUNKEN
Price: JPY 13,636
Shop: Osu shop
Arrival: 2025-12-19 19:53:42
description
1 bottle sold with diamond mark, 12 AU7 compatible sphere, smooth plate, measured value 108 (rejected value 56) *Measured values indicate gM values measured by testing machine TV-7 (Kojima Yosuke) Accessories: none

350B

Ask 25-48054-23399-00
350B
Manufacture:GOLDEN DRAGON
Price: JPY 7,273(pair)
Shop: Osu shop
Arrival: 2025-12-19 19:53:15
description
Pair tube, 6L6 equivalent tube, made in China, measured value 40/38 (rejected value 31) with original box ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box

350B

Ask 25-48054-23401-00
350B
Manufacture:GOLDEN DRAGON
Price: JPY 8,182(pair)
Shop: Osu shop
Arrival: 2025-12-19 19:53:11
description
Pair tube, 6L6 equivalent tube, made in China, measured value 44/42 (rejected value 31) with original box ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box

PRIME 845

Ask 25-48054-23372-00
PRIME 845
Manufacture:SUN VALLEY
Price: JPY 9,091(only one piece)
Shop: Osu shop
Arrival: 2025-12-19 19:53:07
description
Large triode tube sun valley sorting ball measured Ip value: 66mA (the best standard IP value for this amplifier is 75mA) There is discoloration on the base part*The test amplifier makes sound, measures plate current values, and operation has been checked (Kojima Yosuke) Accessories: white box

2A3

Ask 25-48204-25120-00
2A3
Manufacture:USR
Price: JPY 22,727(pair)
Shop: Osu shop
Arrival: 2025-12-18 20:32:18
description
Pair tube direct heat triode double gettering made in Japan measured value 64/60 (rejected value 38) *Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: none

VT-52

25-48204-25148-00
VT-52
Manufacture:NATIONAL UNION
Price: JPY 27,273(pair)
Shop: Osu shop
Arrival: 2025-12-18 20:32:15
description
* Judging from the structure that it is made by NATIONAL UNION, the printing on the base part seems to be a reprint. Pair tube 45 Special/38142 compatible ball straight heat triode tube fishing rod type filament measurement value 106/100 (rejection value 55) *The pair is determined based on the gM value measured by the testing machine TV-7 (Kojima Yosuke) Accessories: none

KT88

Ask 25-48384-25605-00
KT88
Manufacture:JJ
Price: JPY 11,818(pair)
Shop: Osu shop
Arrival: 2025-12-18 20:32:12
description
Pair tube ambient heat beam tube made in Slovakia measured value 60/60 (rejection value 44) with original box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box

6CA7

Ask 25-45681-05218-00
6CA7
Manufacture:JJ
Price: JPY 6,364(pair)
Shop: Osu shop
Arrival: 2025-12-18 20:32:10
description
Pair tube EL34 compatible thick tube measurement value 52/50 (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

6CA7

Ask 25-45130-02929-00
6CA7
Manufacture:JJ
Price: JPY 6,364(pair)
Shop: Osu shop
Arrival: 2025-12-18 20:32:06
description
Pair tube EL34 compatible thick tube measurement value 54/52 (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

300B

Ask 25-48330-25213-50
300B
Manufacture:Western Electric
Price: JPY 270,909(pair)
Shop: Osu shop
Arrival: 2025-12-14 20:06:13
description
Pair tube direct heat triode American lot: 6539/6952 double square getter measurement value 80/78 (rejection value 58) with replacement box Both tubes were burned by mica at the top of the tube head, and the getter has decreased slightly ※Pairs are judged based on the gM value measured by the testing machine TV-7 (Kojima Yosuke) Accessories: replacement box (WE300B original box since 1995)

5692

Ask 25-48330-25214-00
5692
Manufacture:RCA
Price: JPY 23,636
Shop: Osu shop
Arrival: 2025-12-14 20:04:35
description
Set of 2 (not treated as a pair because there is a difference between the measured values) 6SN7 high reliability tube black plate red base measured value 106/92 (rejected value 50) *Measured values are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke) Accessories: none

KT77

Ask 25-48131-24080-00
KT77
Manufacture:GEC
Price: JPY 11,818(only one piece)
Shop: Osu shop
Arrival: 2025-12-08 19:38:49
description
Selling 1 bottle EL34/6CA7 equivalent tube, English tea base lot: ZE Z double gettering measured value 38 (rejected value 30) with replacement box ※The measured values indicate gM values measured with the testing machine TV-7 (Kojima Yosuke) Accessories: replacement box (GE box)

KT77

Ask 25-48131-24078-00
KT77
Manufacture:GEC
Price: JPY 41,818(pair)
Shop: Osu shop
Arrival: 2025-12-08 19:38:01
description
Pair tube EL34/6CA7 equivalent tube English tea base lot: ZE Z/ZD Z double gettering measurement value 52/46 (rejected value 30) with replacement box ※ pair is judged based on gM values measured by testing machine TV-7 (Kojima Yosuke) Accessories: Replacement box (Elehamo box)

CV1947

Ask 25-47886-21253-00
CV1947
Manufacture:STC
Price: JPY 11,818(only one piece)
Shop: Osu shop
Arrival: 2025-10-28 19:29:23
description
1 bottle sale, made in England, 6L6G equivalent tube, military high reliability tube, smoke measurement value 42 (rejected value 25) with white box ※The measured values indicate gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box

KT170

Ask 25-89024-22281-00
KT170
Manufacture:TUNG SOL
Price: JPY 22,727(pair)
Shop: Osu shop
Arrival: 2025-11-06 20:01:56
description
Pair tube ambient heat beam output tube made in Russia lot: 2108/2108 measured value 76/72 (GM value measured with KT88 setting value with measuring instrument TV-7) with original box ※ pair is determined based on gM value measured with test machine TV-7 (Kojima Yosuke) Accessories: original box

12AX7

Ask 25-46273-09139-00
12AX7
Manufacture:MATSUDA
Price: JPY 3,636
Shop: Osu shop
Arrival: 2025-10-27 19:36:57
description
Sold 1 bottle ECC83 compatible ball, made in Japan, measured value 44 (rejected value 32) *Measured values indicate gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box (lid damaged)

12AX7A

Ask 25-46273-09199-00
12AX7A
Manufacture:NEC
Price: JPY 3,636
Shop: Osu shop
Arrival: 2025-10-26 20:31:15
description
Sold 1 bottle ECC83 compatible ball, made in Japan, measured value 50 (rejected value 32) with replacement box ※The measured values indicate gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: replacement box

5AR4

Ask 24-44677-26296-00
5AR4
Manufacture:TOSHIBA
Price: JPY 4,091
Shop: Osu shop
Arrival: 2025-10-24 14:15:30
description
Sold per bottle, rectifier tube, GZ34 compatible ball, made in Japan, measured value 56 (rejected value 40) with original box ※The measured values indicate gM values measured with the testing machine TV-7 (Kojima Yosuke) Accessories: original box (bulk box)

KT88

Ask 16-85072-83803-00
KT88
Manufacture:GEC
Price: JPY 61,818(pair)
Shop: Osu shop
Arrival: 2025-10-19 20:08:25
description
Pair tube ambient heat beam tube British tea base lot: RC Z/QM Z measured value 72/66 (rejection value 44) with white box There is burn on the tube head ※The pair is determined based on the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: white box

KT88

Ask 16-85072-83802-00
KT88
Manufacture:GEC
Price: JPY 61,818(pair)
Shop: Osu shop
Arrival: 2025-10-19 20:08:22
description
Pair tube ambient heat beam tube English tea base lot: PC 4/QM Z measurement value 68/66 (rejection value 44) with replacement box, getter burnt on the head ※The pair is determined based on the gM value measured by the testing machine TV-7 (Kojima Yosuke) Accessories: replacement box

6SU7GTY

Ask 25-47743-20340-00
6SU7GTY
Manufacture:TUNG SOL
Price: JPY 16,364(pair)
Shop: Osu shop
Arrival: 2025-10-13 10:20:33
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

6SU7GTY

Ask 25-47743-20341-00
6SU7GTY
Manufacture:TUNG SOL
Price: JPY 9,091(pair)
Shop: Osu shop
Arrival: 2025-10-13 10:20:30
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

6V6G

Ask 25-47743-20338-00
6V6G
Manufacture:VISSEAUX
Price: JPY 13,636(pair)
Shop: Osu shop
Arrival: 2025-10-13 10:20:26
description
Pair tube smoke, made in France, measured value 86/84 (rejected value 46) with white box ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: white box

6V6G

Ask 24-41591-01072-00
6V6G
Manufacture:WESTING HOUSE
Price: JPY 11,818(pair)
Shop: Osu shop
Arrival: 2025-07-04 19:45:56
description
Pair tube smoke, made in Canada, JAN smoke measurement value 96/90, rejection value 46) with original box ※Pairs are determined based on gM values measured by testing machine TV-7 (Kojima Yosuke) Accessories: original box

5692

Ask 21-33538-24439-00
5692
Manufacture:GE
Price: JPY 10,000(only one piece)
Shop: Osu shop
Arrival: 2025-07-18 19:28:09
description
* The model number printing has disappeared, but it was determined that it was 5692 based on the structure, sold 1 bottle 6SN7 high reliability tube, red base, double mica, made in America, measured value 90 (rejected value 50) with replacement box ※The measured values indicate gM values measured with the testing machine TV-7 (Kojima Yosuke) Accessories: replacement box

37

Ask 23-40777-22726-00
37
Manufacture:GE
Price: JPY 5,455(pair)
Shop: Osu shop
Arrival: 2025-09-06 20:04:30
description
Pair tube made in America, measured value 42/42 (rejected value 23) with original box*Pairs are determined based on GM values measured by the testing machine TV-7 (Kojima Yosuke) Accessories: original box

EF806S

Ask 25-46191-09505-00
EF806S
Manufacture:TELEFUNKEN
Price: JPY 10,000
Shop: Osu shop
Arrival: 2025-09-02 19:44:08
description
Sold 1 bottle EF86/6267 compatible ball, maximum reliability tube, diamond mark measurement value 60 (rejected value 33), there is getter burn ※The measured value indicates the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: none

5AR4

Ask 23-41274-26760-00
5AR4
Manufacture:GE
Price: JPY 3,636
Shop: Osu shop
Arrival: 2025-09-01 19:56:07
description
Rectifier tube sold per bottle, GZ34 compatible ball, made in America, measured value 56 (rejected value 40), there is getter burn ※The measured value shows the gM value measured with the test machine TV-7 (Kojima Yosuke) Accessories: none

6SL7WGT

Ask 22-34736-33317-00
6SL7WGT
Manufacture:SYLVANIA
Price: JPY 2,273(only one piece)
Shop: Osu shop
Arrival: 2025-08-28 20:03:39
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
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