Reproduction of acoustic instruments with tube amp

Thanks guys. My speakers are Audio Physic Spark III. I'm also considering trying tubes in the bedroom system which has Paradigm Studio 20 v2. I used to own a tube amp (VTL ST-85) and loved what it did for the vocals, but in then end, I went back to my SS (Plinius 100 Mk III). I didn't feel the VTL gave me the definition and separation of the instruments like my SS amps do (the others are McCormack and Coda). I don't mean this to be another "I want the best of both worlds" thread, but since vocals and the sound of acoustic instruments are the two things that I love most, if I could find a tube amp that convinces me with the instruments, I'll at least have my top two 'needs' met.

Sorry Dekay, I didn't answer your questions. I'm looking for a power amp and the room is about 10' x 12'. I use a Resolution Audio CD55 (no pre).

Audition Conrad Johnson Premier 11a or 12's if you get a chance. Just an idea. I adore the way acoustic instuments are reproduced by my 11a. I have no idea of the newer, possibly better tube gear out there and if I did upgrade I would go from my 11a to 12's.

Dburdick, you may not find what you are looking for within your budget limitations. The Atma-Sphere MA-1 would deliver what you're looking for, but used prices are higher than the limit you've set. Another alternative that would work well for me would be the c-j Premier 11a, and they are available used in the ballpark of the top end of your budget.

I have been a tube amp user for many years. Last year I decided to try solid state as part of a downsizing exercise. After 9 mo of misery I have gone back to tubes. I just got a tube amp and am waiting for a tube preamp to ship. I have only heard 3 VTL amps including the one you owned and never thought they exhibited the virtues of tube amps. They all sounded more like a solid state amp to me. Good tube amps should excel at the reproduction of acoustic intruments provided the rest of the system is properly matched.
I don't know if your speakers match up well with a tube amp, which could also be an issue. If your budget is under $2k I would suggest you audition some Quicksilver Mono amps.