Thanks guys. According to Upsacle Audio the older testers are not capable of testing these tubes properly. They tell me that they have an Amplitrex that can, but that's all they can tell me. Guess I'll be looking for a used Amplitrex......
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Tube Testing
Does anyone know how to test the 6H30P tubes with older testers? I have a Jackson 648R tester. I can find no cross-references on the internet. Maybe my tester is too old for these newer style tubes. Any advise will be greatly appreciated.
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