Tube preamp $1500-2000 for a thin sounding amp?

Hi, i'm looking for a good tube preamp that gives body to my sound. I have a Musical Fidelity A3CR amp and preamp and I think this couple is thin sounding, I want to try a tube preamp to see if I can solve this. I like my classical orchestra music to sound full bodied. I have a subwoofer, so the problem is not deep bass, but maybe mid-bass or upper bass (?). I'd appreaciate any help, I've got almost $2,000 to spend.
Thanks/cheers