Pair tube, CV25 equivalent tube, VT-4C/211 compatible ball, large triode tube, molybdenum plate (zirconium coating), measured IP value: 45/45 mA (the best reference IP value for this amplifier is 50 mA) with white 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: white box