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Manufacture | Model/Title | Price | Arrival date

TRV-88SERJapan

Ask 26-49363-07050-00
TRV-88SER
Manufacture:TRIODE
Original price: JPY 198,000
Price: JPY 122,727
Japan
Arrival: 2026-03-26 20:17:08
description
With optional side wood! This model is equipped with an MM phono equalizer and is compatible with a remote control for volume adjustment. In addition to dividing the transformer into 3 parts, changes have also been made, such as omitting the PRE-IN terminal, and the power supply LED is orange. In addition to the firm extrusion characteristic of vacuum tube amplifiers, it is a product with a delicate and clear tone. Serial 21022149 (Hiura Katsuji) Maintenance information: 2026.3.24 sound output confirmed Accessories: instruction manual, remote control, power cable Main specifications: KT88E x 4, 12AX7 x 1, 12AU7A x 2 output 45W+45W W340 x H185 x D315 mm 15 kg

F15UK

Ask 26-49281-06379-00
F15
Manufacture:MUSICAL FIDELITY
Original price: JPY 398,000
Price: JPY 134,545
UK
Arrival: 2026-03-26 20:11:43
description
It operates in triode class A with 2 hybrid power amplifier inputs (balanced/unbalanced), ECC88 for the initial stage, and a transistor for the output. It is extremely smooth and glossy, and has an attractive warm tone and sense of dynamism typical of Fidelity. Serial 041001 has small scratches and dullness on the exterior (Hiura Katsuji) Maintenance information: 2026.3.21 sound output confirmed Accessories: instruction manual power cable Main specifications: triode class A operation 100W+100W W480 x H185 x D365 mm 25.9 kg

F22UK

Ask 26-49281-06380-00
F22
Manufacture:MUSICAL FIDELITY
Original price: JPY 338,000
Price: JPY 116,364
UK 1994 made
Arrival: 2026-03-26 20:11:28
description
Option board (MC) tubular hybrid preamp. There is luster in the mid to high frequencies, and the sound of chamber music strings and a beautiful piano jazz trio also have a nice atmosphere. While making you feel the bewitching expression of a triode, the operation, function, and operability equivalent to that of a normal transistor amplifier is attractive. It seems to slide gently into the ear, and it delivers vocals in a particularly pleasant way. Serial 019052 has small scratches on the exterior (Hiura Katsuji) Maintenance information: 2026.3.22 sound output confirmed Accessories: instruction manual, remote control, power cable Main specifications: ECC88 x 4 with MC phono board W482 x H115 x D325 mm 10 kg

300B

Ask 26-89026-05989-00
300B
Manufacture:Western Electric
Price: JPY 228,182(pair)
Shop: Osu shop
Arrival: 2026-03-12 19:46:36
description
The price has been drastically reduced. 2026/3/12 sales price 268,000 yen pair tube direct heat triode tube American gothic printing lot: 8152/8152 measured value 80/80 (rejected value 58) with original box both tubes have slight burns on the head ※The pair is judged based on the GM value measured by the testing machine TV-7 (Kojima Yosuke) Accessories: original box

300B

Ask 26-48780-01809-00
300B
Manufacture:CETRON
Price: JPY 90,727(pair)
Shop: Osu shop
Arrival: 2026-03-10 10:08:16
description
The disposal price has been reduced. 2026/2/1 sales price 118,000 yen pair tube direct heat triode made in America lot: 9745/9745 measured value 70/68 (rejected value 58) There is a missing getter on one side (see image 4) *Pairs are determined based on the gM value measured by the test machine TV-7 (Kojima Yosuke) Accessories: none

QC-twenty fourUK

This item has been sold.You can't purchase now. 26-49157-05348-00
QC-twenty four
Manufacture:QUAD
Original price: JPY 235,000
Price: JPY 81,636 Sold Out
UK 2004 made
Arrival: 2026-03-07 20:16:42
description
The price has been drastically reduced. 2026/3/7 sales price 99,800 yen*Line exclusive model. A QUAD control amplifier with a modern design. It is characterized by its simple, straightforward, and bouncy texture, which brings out the thickness of the sound. By adopting a double triode 6111WA as the central control device, a high signal-to-noise ratio has been achieved with a simple configuration. Serial C240901 (Takasaki Atsushi) Maintenance information: 2026.3.5 operation confirmed Accessories: manual, power cord, original box Main specifications: Vacuum tube 6111 WA x 1 (double triode) LINE input/RCA x 5 systems, TAPE input/output/RCA x 2 systems System, W300 x H88 x D125 mm, weight 3.4 kg

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

6SN7GTB

Ask 26-89024-00056-00
6SN7GTB
Manufacture:RCA
Price: JPY 12,727(pair)
Shop: Osu shop
Arrival: 2026-03-13 18:59:02
description
Pair tube double triode tube American black plate square getter measured value 108/106 (rejected value 50) *Pairs are determined based on gM values measured by the testing 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

2A3

This item has been sold.You can't purchase now. 26-48885-03136-00
2A3
Manufacture:RCA
Price: JPY 11,818(only one piece)Sold Out
Shop: Osu shop
Arrival: 2026-02-28 19:45:57
description
Single sale direct heat triode tube, made in America, double square getter, measured value 62 (rejected value 38) with original box ※The measured values indicate gM values measured with the test machine TV-7 (Kojima Yosuke) Accessories: original box (lid is missing)

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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