1pc Gold plated Tube amp bias tester for el34 6v6 6l6 kt88 6550 "mV" test mode

tester your amp cathode current adapter .Gold plated Socket and copper banana head 
When you insert banana plug to your multimeter,please adjust "mV",turn on power waiting about 5-10minutes,multimeter have "xxmV" exsample 40mV,that is you test tube current,and than test one by one."mV"test mode is safety for your amp than "mA" test mode,i have "mA"mode adapter,if want that please give me message. photo IMG_2725_zpskk7cpuvj.jpg  photo IMG_2726_zpspa5eswyc.jpg  photo IMG_2729_zps4s71ws5y.jpg


please see i'm testing my pair pull push(one channel 4pc EL34 tubes) amp sample bias,rotation blue pot,let all tubes current is same.

 photo IMG_2721_zps10e531bc.jpg
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