Large triode tube, made in China, seems to have the same structure as Golden Dragon 845 Premium Metal. Measured Ip value: 73/72mA (the best standard IP value for this amplifier is 75mA) with original box ※Sound is checked with a test amplifier, plate current values have been measured, and it has been determined that operation is good (Kojima Yosuke)
Accessories: original box
Set of 2 (2 are not treated as a pair because the measured values are very different) double triode tubes made in China, measured value 104/90 (rejected value 50) with white box ※ measured values are gM values measured with the testing machine TV-7 (Kojima Yosuke)
Accessories: white box
Pair tube, 6L6 equivalent tube, made in China, measured value 38/38 (rejected value 31) with original box ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube, 6L6 equivalent tube, made in China, measured value 40/38 (rejected value 31) with original box ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box
Pair tube, 6L6 equivalent tube, made in China, measured value 44/42 (rejected value 31) with original box ※Pairs are determined based on gM values measured with the test machine TV-7 (Kojima Yosuke)
Accessories: original box