FWIW, as I recall Raven uses 6l6GC power tubes in their amps. This should produce a clear and linear sound which can sound excellent when used with neutral to warm toned speakers (I like and use that tube a lot) much as a 6550 or KT88. No so much the Carys which use tubes which tend to err on the warm side of neutral and might sound good with Klipsch speakers, but not mine. :-)
I agree with Prentice regarding first selecting speakers before you get an amp, BUT I think you would benefit from broader research into matching amps and speakers before you do either. FWIW, I used 6l6gcs in a Primaluna Dialogue One amp. I liked the combo a lot.