I don't think the Svetlanas are all that bad. My GTEL34M's are drifting like crazy and starting to scare me. I had a pair of Svetlanas handy, so that's what went in. They are a little thin, but the bass boost helped that. I've got the bass and mids on 10 and the treble on 6 or 7 and it sounds pretty good. I've gotten to where I don't even touch the presence control any more. I've really never been in a situation where I needed it with the DSL. Hopefully I'll have some RFT EL34's in it soon and then I won't have to worry about CP tubes for awhile.
