Tubed preamp for MAC MC2000 amp?


I am purchasing a McIntosh MC2000 tubed amp and would like to mate it with a tubed preamp, but alas Mac does not make one. Any suggestions? I thought maybe a BAT VK-50 SE but salesman told me poor impedance match. I'm not sure what a good impedence match would be for a tubed preamp. He had no recommendations. I also thought a CAT preamp. What's with this impedance match? He suggests MAC 42 ss preamp.
Help!
amwarwick
Ivé got the MC2000 and the MC2102 I used the Re-issue Mac C22. If you want some crips I used the Marantz Re-issue Model 7.Seems to have a good combination.As I used the Klipschorn speakers.As a Mac fan I would like to have all Mac connected.

Joseph Lazaro
Singapore
I have the Mac2000 amp (love it). I am using a Classe DR5 preamp (non-tube), and it sound very good. However, I am going to purchase A Hovland HP100 (tubed)in the near future & try it out with the MC2000. This preamp has gotten rave reviews everywhere. You may ask your dealer about this combo, or the Audio Research tubed preamps.