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)
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
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
Pair tube large triode tube made in America Actual measured Ip value: 44/45 mA (the best standard IP value for this amplifier is 50 mA) There is discoloration on the getter and there is a hook scratch on the base*Sound was checked and the plate current value was measured with the test amplifier, and it has been determined that the operation is good (Kojima Yosuke)
Accessories: none
Single sale rectifier tube 5AR4 compatible ball saw plate (4 notch type) structure and date code determined to be made by Mullard Code: f32 B7B1 measured value 54 (rejection value 40) There is a lot of printing loss and black discoloration near the base of the tube*Measured values are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: none
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
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
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
Pair tube direct heat triode tube, white base, gold foot, made in Russia, measured value 80/80 (rejected value 58) with replacement box ※The pair is determined based on the gM value measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: replacement box (PSVANE box)
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
* 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
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
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
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
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
Single sale rectifier tube made in Japan double gettering measurement value 60 (rejection value 40) There is an adhesive mark at the joint between the tube and base ※The measured value shows the gM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: none
Sold 1 bottle EL34 compatible ball, made in Japan, W mark, W getter ring measurement value 50 (rejected value 30), there is getter burn ※The measured value indicates the gM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: none
Sold 1 bottle 6SN7 high reliability tube red base black plate made in America measured value 86 (rejected value 50) The getter has decreased and there is burn ※The measured value is determined based on the gM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: none
Single sold rectifier tube made in Japan double gettering measurement value 58 (rejected value 40) makes an abnormal noise on the inside of the base ※The measured values indicate GM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: none
Sold 1 bottle 6SN7 high reliability tube black plate brown base measurement value 76 (rejected value 50) *Measured values are determined based on gM values measured by testing machine TV-7 (Kojima Yosuke)
Accessories: none
Pair tube made in China tube measurement value 56/56 (rejected value 32) with original box*Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube made in China tube measurement value 56/54 (rejected value 32) There is burn on the head getter 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
Pair tube made in China tube measurement value 56/54 (rejected value 32) There is burn on the head getter 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
Pair tube ambient heat beam output tube made in China measured value 40/38 (rejected value 32) There is no printing with a white box, but it seems to have the same structure as GD KT66 RETRO from the structure*Pairs are judged based on GM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: white box
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
Pair tube ambient heat beam tube English tea base measurement value 64/64 (rejected value 44) side getters on one side with white box have been drastically reduced, and the other side is cheap because it makes a crackling noise inside the base.*Pairs are determined based on GM values measured with the TV-7 testing machine (Kojima Yosuke)
Accessories: white box
It's a pair tube Kaufman print, but it seems to be made in Russia due to its shape. Measured value 44/44 (rejected value 30) with white box ※ pair is determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube KT88/6550 compatible ball made in Russia code: 1409/1412, measured value 62/60 (rejected value 44) with original box, there is slight getter burn ※The pair is judged based on the gM value measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube EL34 compatible ball triode sorting ball made in China measured value 46/46 (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
Pair tube ambient heat beam tube made in Russia, measured value 38/36 (rejected value 25), there is a getter burn 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