My (solid state) Rudistor RP010B is more tube-like (not strident, sweet, involving), and my tubed Pinnacle is more solid-state like (very detailed, insightful, soaring extended highs, very solid bass).
But still I still hear something I can't quite describe, an immediacy and inner glow from the Pinnacle that IME is a signature only tube amps provide.
I think the best tube amps have a certain level of inner micro dynamics, a certain sense of immersion that I've only found on a very (*very*) few solid state amps like the Liquid Lightning and the Apex Arete.
I own and enjoy solid state megaliths like the B22, and while they have plenty of good qualities, I find they simply can't capture that inner depth provided by the best tube amp designs I've tried. That being said, I really don't care for the more stereotypical "tube" sound some people seem to equate with all tube amps. Warm, syrupy... no thanks. That's why Eddie Current's amps appeal to me so much, as they're simply some of the most transparent amps out there, either solid stare or tube.
Have a lot of respect for Pete Millett's work as well. I'd love to try the Pinnacle out sometime. Eventually I'd like to own the 307A someday, too.
Overall though, it's best to judge an amp on a case by case basis I find.
Edited by MuppetFace - 10/31/12 at 11:56am