How tubes influence sound


From what I've read here it's clear that the general consensus is that tubes influence sound. For the purposes of this post I'm only asking about tubes in a preamp, mkay? And the tube pre only has 2 tubes.
Exactly how do tubes effect the sound? I'm not asking how each specific brand effects the sound, but in general terms. Do different tubes change the "color", "texture", or "feel" of the actual notes? Do different tubes go so far as to widen and/or deepen the soundstage? Are some tubes more "tubey" sounding than others?
Thanks.
tgyeti

Showing 1 response by dsremer

I realy enjoyed all the above descripition of what tubes can and will do especially in a pre.I also find this true in cd/phono/power amps, which is why many of us enjoy tube rolling...different equipment different tubes different presantation.This is one of the major reasons there is a demand for old stock tubes for they are still much better than todays new stock.