Pair tube direct heat triode tube, white base, made in Russia, measured value 80/80 (rejected value 58) with original box ※ pair is determined based on gM values measured by testing machine TV-7 (Kojima Yosuke)
Accessories: original box
Sold per bottle, 300B equivalent tube, direct heat triode, English tea base, double ring getter, measurement value 66 (rejection value 58) with original box*The measured values represent the gm values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box