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This Post Has Been Edited by the Author
In Reply to: RE: 6U8 vs 6GH8 vs 6BL8 sub for 7199 needed posted by airtime on July 15, 2017 at 08:59:01
I've had good results with TungSol 6U8 (original, not reissue).
A lot of 6U8's hum from heater to cathode leakage in the pentode section, old TungSols usually do not.
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