Douk Audio CT1-BOX 8-Pin Dual Bias Current Probes Tester w/VU Meter for EL34 KT88 6L6 6V6 6550 KT66 Tube

Introduction 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, easily and distinctly to read. Features Ceramic socket and gold pins for longer service life, tough gold pins with a thick gold plating. Dual larger current meter reader, max test current range up to 100mA. Adopting copper wire to ensure excellent conductivity. Each probe tester is soldered by outstanding craftmanship. Metal case, more solid and with better shielding performance. Features Brand: Douk Audio Model: CT1-BOX DC Plug: 5.5/2.2 mm Length of tube socket cable: 23cm Material of tube socket: ceramic Range of current meter: 100mA Dimensions of box (W*D*H): 150*106*70mm / 5.90*4.17*2.75in Net weight: 500g / 1.10lb Package weight: 1000g / 2.20lb How to use it ? Turn off yo