**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)

Additional Details from the Manufacturer

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More features

• Compatibility for a Variety of Tubes: Engineered by Douk Audio, the CT1-BOX is a versatile bias current probe tester designed for power tubes like EL34, KT88, 6L6, 6V6, 5881, 6550, KT66, KT100, KT120, and 7027, ensuring precise bias readings for your audio equipment.
• High-Quality Construction for Durability: Equipped with a ceramic socket and gold-plated pins, each CT1-BOX probe tester is crafted for longevity. The robust gold pins promise a longer service life and reliable connections every time.
• Dual Current Meter Reader with Wide Range: With a dual larger current meter reader, the CT1-BOX offers a maximum test current range up to 100mA, providing clear and distinct readings for accurate bias adjustments.
• Enhanced Conductivity and Shielding: The use of copper wire in the probe testers ensures excellent conductivity, while the metal case design delivers solid construction and superior shielding performance, minimizing interference for reliable measurements.
• Comprehensive Package and Service: The CT1-BOX comes with everything you need to start measuring bias currents right out of the box. Included is a pair of probe testers and a current meter box, all packed with care to ensure a safe journey to your workspace.