07 Ago Dual Bias Current Probes Tester+Analog VU Meter for EL34 KT88 6L6 6V6 6550 KT66
CT1-BOX is designed by Douk Audio, in order to measure the cathode current of the power tube for bias reading (at low voltage side of the tubes), suitable for EL34, KT88, 6L6, 6V6, 5881, 6550, KT66, KT100, KT120, 7027 etc., equipped with large current meter,...