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Best Testing Procedures for New Tubes

I have been happy with Upscale and have a lot of respect for their 76 hour burn-in. For output tubes that seems like it could really help to keep tubes matched by avoiding too much drift. But since they don’t have the output tubes I am looking for, what other tube sellers have a robust burn-in and matching process?


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Topic - Best Testing Procedures for New Tubes - Paully 09:38:32 02/19/07 (1)


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