I appreciate the fast responses!
I think that the amp sounds much more like a tube amp than a solid state - strange how those things can happen!

So they have a forward sound? I didn't hear that before!
Here is what I prefer:
Bass: I like it to have good bass EXTENSION, impact is not as important
Midrange: Lush and natural midrange, I don't like coloration
Highs: I just don't want them distorted - being tame is more important
Soundstage & Detail: Detail is more important than Soundstage - I want to feel like I am in in the middle of the concert hall - not next to the instruments or in the balcony
My music preferences are so:
My "top five": Yes, Jethro Tull, Pink Floyd, Led Zeppelin
Classic rock, progressive, chamber classical
Help is very much appreciated!
PS: I live twenty minutes from the factory, so I probably could do some demos easily.