Which is the best preamp for the BEL 1001 MKVs?

Thanks for your all suggestions. I have tried the BELs with Hovland HP100 and then VTL 5.5. They both sound good with the BEL I slightly prefer the VTL due to the bigger soundstage and better midrange. The Hovland is better in the high and inner detail. To me, nothing beats the BEL in the bass and separation. I have tried some other tube amps that cost twice of a BEL but nothing comes close. Best solid amp that I have heard under 10k. They are a keeper.:)

This response may be a bit late, but here goes. I have a pair of BEL 1001 MkV's and have tried several preamps until a ran across a local sale on a used Aesthetix Calypso preamp. The rest of my system is: Ayre C5x-e cd player, MacIntosh MR-67 (modded) tuner, Dali Euphonia MS-5, and all BEL RCA interconnects and speaker cable. This system is very satisfying, and the Calypso preamp has taken the sound to a whole new level.

Late to the game, but the Hovland hp100 and Art Audio Gill Alana have both been in my system (driving Meadowlark Blue Heron II's) and the Mk V married the Hovland superbly. I am looking for another Mk V to try a mono setup.

This is an update to my post on 10-29-09. I replaced my Aesthetix Calypso preamp with a VTL 7.5, everything else has remained the same. Needless to say, this may be as good as it gets and I have no plans on changing either the pre or the amps anytime soon. Peace.

Do you still have your amps? If so, would you be interested in selling them?