Vacuum Tube Tester Bias Probe 8pin Tube Tester Current Probe Vacuum Tube Amplifier Amptata V8 DIY Octal Vacuum Tube Checker Quad Meter for EL34 KT88 6L6 6CA7 6V6 5881 6550 KT66 KT100 KT120 mA Version

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Feature

V8 is Global voltage standard ( 100V~240V ) is working
V8 DIY tester can measures the cathode current of the power tube for bias reading (at low voltage side of the tubes )
V8 suitable for EL34 KT88 6L6 6V6 5881 6550 KT66 KT100 KT120 7027 etc.
V8 can get the reading direct from the current meter. It does not need any convert from mV to mA.
V8 use LED Amp Meter Ammeter Current Panel. Better performance than LCD.