Pair tube, 211 equivalent tube, large triode tube, made in America, actual measured IP value: 49/48 mA (the best standard IP value for this amplifier is 50 mA) both tubes with the original box have brown burns on the head, and the getter on one side is slightly reduced ※The sound is checked and the plate current value is measured with the test amplifier, and it has been determined that the operation is good (Kojima Yosuke)
Accessories: original box