Pair tube direct heat triode tube made in China measured value 76/74 (rejected value 38) with original box*Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube direct heat triode tube made in China measured value 74/70 (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
Pair tube direct heat triode tube made in China measured value 70/66 (rejected value 38) with replacement box*Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: replacement box (Silvertone)
Pair tube direct heat triode tube made in China measured value 72/70 (rejected value 38) both tubes with original box have burns on the tube head, and there are writing marks on the base part*Pairs are judged based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box