View 1 of **FACTORY SEALED**Nobsound 8-Pin Dual Bias Current Probes Tester Meter for EL34 KT88 6L6 6V6 6550 Vacuum Tube Amp Amplifier (2*Meter + 2*CT1-C, Cathode Current PRO Version)

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View 1 of **FACTORY SEALED**Nobsound 8-Pin Dual Bias Current Probes Tester Meter for EL34 KT88 6L6 6V6 6550 Vacuum Tube Amp Amplifier (2*Meter + 2*CT1-C, Cathode Current PRO Version)View 2 of **FACTORY SEALED**Nobsound 8-Pin Dual Bias Current Probes Tester Meter for EL34 KT88 6L6 6V6 6550 Vacuum Tube Amp Amplifier (2*Meter + 2*CT1-C, Cathode Current PRO Version)