Anyone has a reference system where amplification is SS ?

Its a known fact as soon as you power up tubes, especially in tube amps, they are wearing themselves out.  I don't need that kind of concern atttached to my system. I got more important things to worry about like room conditioning, cabling, speaker positioning and etc.  If i use tubes it will be in low level devices like preamps, phono preamp etc and I will do that. But I still like solid state preamps a great deal for certain music and I have a couple of them as well.

@phd 

Yes, I felt the way you did until I finally bought one… now, I could care less about the wear, or any other theoretical problem. The sound quality justifies it. I now have thousands of hours on tube amps with no failures and no tube changes. 

Personally, I will never have a reference system but will always have a good sound with tube equipment and analogue source wherever possible. The core of any music is in the midrange, and if you don't get it right more or less - forget about the rest. Choice of tubes is very important too, the difference can be dramatic, as everyone knows.

inna, yes indeed you will have good sound with tube amps but they cannot be left on all the time and thats where I'm coming from.

I do have a solid state Conrad Johnson preamp that does an amazing job with the midrange, especially when it is left on for several days. It makes wonder why I should bother with a tube preamp when it sounds that wonderful. But when I insert the tube preamp it sounds pretty amazing in a different way. From time to time I like to switch up preamps because it keeps things interesting.