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Old 09-11-2019, 09:58 AM
TLi TLi is offline
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Join Date: Oct 2014
Posts: 157
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6550 in Ref 10 is critical in forming the final sound. I have tried around 10 different 6550’s. The best is still Tung Sol old tubes. The black plate is top of my list. The tubes tend to degrade around 2000 hours. I have used up a few sets already.
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