Nope, no way I'm going to use a SS for high. At least a hybrid. The best high sound will be a full tube. It just sound more like Live highs. Rounded, full body dynamic and heft.
Wish we are living near each other and we can have hearing sessions. You set up your SS and I set up my valve to hybrid to SS and Class D system. We invite people, golden ears and ordinary people not into hifi, to give comments and to vote which is nicer and closer to Live.
Hmm, do we invite the police as well to vote since we are blasting with KW of power?
What I notice most is "space" around the instruments and the size of the performing ensemble. Small chamber music, jazz club settings or solo works sound "intimate", major symphonic music sounds huge. Better means that I never zap around to listen to something else. I remain attentive for the whole work being played. I do not use playlists anymore, I want the package that the composer originally intended.
Alex (Kitic) has a whole family of valve amps and is very outspoken about what they do and why - exactly what I was looking for. He is very responsive to "sensible" correspondence by E'mail.