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Re: driver design

64.91.49.176

I tried a lot of 6CG7s as a twin tail phase splitter into triode 6V6s. I was not please with the sonics of GE, Sylvania, RCA and a few others with the exception of a real Raytheon 6CG7 with tall black plates & center shield. Most Raytheon 6CG7 are grey plate made in Japan.

I also tried 6922s of many brands, some 12BH7s and a Telefunken ECC85 that fell well short of the real Raytheon 6CG7 performance.

Anyways, if not a real US Raytheon 6CG7 black plate, I would use a Sylvania 6SN7GT, GTA or W with the T shape plates. If too expensive, try a pair of 1940s Sylvania 6J5GT.


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