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RE: Tungsol Roundplate 6SN7: Why so magical?

Posted by Story on July 8, 2020 at 03:55:45:
JB - I looked at my stash and the RCA's, Raytheon's, and National Union's all have round plates. These are all WW2 vintage and original i.e. not made by anybody else. NU's tend to be microphonic but sound real nice.

The best and most magical I have ever tried are the Sylvania's which have round plates. There's something they used in the construction that makes for the clearest cleanest high end above all the others.