Pair tube direct heat triode tube, white base, made in Slovakia, measured value 76/74 (rejected value 58) with original box*Pairs are determined based on gM values measured by testing machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube 6CA7 compatible ball 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
Pair tube EL34/6CA7 compatible tube measured value 40/36 (rejected value 30) with original box*Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: original box