Pair tube direct heat triode tube, white base, made in Russia, measured value 76/76 (rejected value 58) with original box ※ pair is determined based on gM values measured by testing machine TV-7 (Kojima Yosuke)
Accessories: original box
Direct thermal triode sold per bottle, made in Russia, measured value 76 (rejected value 58) with replacement box ※The measured values indicate gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: replacement box