I think there needs to be some distinctions made here. "Tubes" and "SS" cover a very large range of amps and some are very similar and some are not. In my experience thus far, SET tube amps have a special quality that I have not found in any SS amps yet. Not sure what to call it but you guys know. At least Tvad does.
And then there are some SS amps that are very good at coming close to tube sound. It is all relative and I find that the speaker being used plays a big role with how the amp will sound. Some push-pull tube amps are not that distant from the average SS. Much closer than the SET crowd gets for instance, but even within push-pulls there are big differences.
At one point, I was using a CJ MV55 tube amp. Nearly everyone will tell you it is the quintessential tube sound. Well, I have yet to find another tube amp that sounded like it! In my system, matched up with my Audio Aero Prima and my Triangle Cometes, it had a clinical resolution, well damped bass and a slightly dry character, with a lack of developed timbral color. Putting in my MC240 gave me smooth resolution and coherence, somewhat soft bass, a liquid midrange, and much improved timbral accuracy.
And yet, my McIntosh MC202 gave me pretty much what my MC240 gives me but with slightly better transparency and tighter bass. The CJ was not like either of them! You will just have to experiement with your own system and see what you find out.
And then there are some SS amps that are very good at coming close to tube sound. It is all relative and I find that the speaker being used plays a big role with how the amp will sound. Some push-pull tube amps are not that distant from the average SS. Much closer than the SET crowd gets for instance, but even within push-pulls there are big differences.
At one point, I was using a CJ MV55 tube amp. Nearly everyone will tell you it is the quintessential tube sound. Well, I have yet to find another tube amp that sounded like it! In my system, matched up with my Audio Aero Prima and my Triangle Cometes, it had a clinical resolution, well damped bass and a slightly dry character, with a lack of developed timbral color. Putting in my MC240 gave me smooth resolution and coherence, somewhat soft bass, a liquid midrange, and much improved timbral accuracy.
And yet, my McIntosh MC202 gave me pretty much what my MC240 gives me but with slightly better transparency and tighter bass. The CJ was not like either of them! You will just have to experiement with your own system and see what you find out.