On 28 Feb 2006 at 6:49, Jim candela wrote: > My recollection is that the 6L6, 7581, KT-66, 807, 1625, 7027, 6BG6 are > all > very similar except for maximum ratings, basing, filament voltage, plate > cap > or none, etc.
Hehe - yeah, very similar... except for quite a lot of things! One might even call it: "Same thing, only different!" Certainly not a plug-in replacement for a 6L6 of any kind!
