I read somewhere that the cheaper Svetlana 4CX800A can be used as a
substitute for the Eimac 3CX800A7. Does anyone know if the Svetlana tube
also uses beam forming? Would I notice a difference at audio frequencies?
(I'm serious)
Also, can this tube be used in class A? On Eimac's site, it says it's
designed for class B, but does that mean that it merely won't be as
efficient in class A, or it will blow up, or what?