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Original Message


Posted by LtMandella on December 10, 2020 at 18:55:43:

Recently I just heard the exact same symptoms as you described for bad tubes, when listening to my Transcendent Sound OTL tube amp.

Sure enough, I bought a quad of tested and matched EL 509s from the bay (a tube seller with almost 2000, 100% feedbacks) and installed them today.

After settling in and rebiasing a couple times, the amp is sounding great again.

The symptoms you described match perfectly with the issues I was hearing...