* The print design etc. attached to the tube are different on both tubes, but since the internal structure is the same, they were treated as a pair, pair tube, direct heat triode tube, made in Russia, measured value 78/74 (rejected value 58) with original box ※The pair is determined based on the GM value measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: original box (there are differences in design and size)