Pair tube direct heat triode made in China measured value 70/70 (rejected value 58) The socket with white box is hard ※The pair is determined based on the gM value measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: white box
It is thought to be made by Shuguang Electronics (China) due to the pair tube direct heat triode structure. Measured value 68/66 (rejected value 38) *Pairs are determined based on gM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: none