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Questions about tubes and gear that glows. FAQ

Does it have to be a GTB in your application?

RCA VT-231 may fit your "creamy, tubey" sound if VT-231 can substitute. You can also try Kenrad VT-231.

I have several pairs of 6SN7/VT-231 as well as GTB and GTA tubes. For me, the sleeper is Raytheon VT-231. Soundwise, to me it has a bit of the lushness of RCA VT-231, the detail of Sylvania short bottle 6SNW, and the bold and big soundstage of Tungsol VT-231 at a budget price. In some applications, circuit dependent and from my experience, it will smoke the popular Sylvania Bad Boys 1952.

Edits: 05/06/20

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