It's a bit above your budget, but if you can stretch a little, it might be interesting to try a Herron VTSP-3A in that system. I haven't heard anything better.
Advice on a preamp
I am looking to replace my preamp as part of my next upgrade(itis). I am currently using an Opera Consonance Reference50MkII tube pre into a Sanders Magtech Amp to drive Monitor Audio PL300 speakers (3 way, 4 ohm). Does anyone here have any good experiences with a particular preamp with the Magtech? I listen mainly to Classical, Jazz, Blues & Rock. Cheers