Try a Copland CTA301 Mkl or Mk2. Will match up against any of the recommended preamps and yet cost a 1/3 of their price. Have yet to hear a better preamp. (and yes I have listened to it and yes it is a preamp. I only say that as you earlier got a suggestion for an amp that was never heard before yet it is recommended. Plus you asked for a pre not an amp)
Seriously, the Copland preamp makes a lot of expensive preamps sound cheap.
Seriously, the Copland preamp makes a lot of expensive preamps sound cheap.