I'd also recommend a Rogue RP-1 used. I had one and it took 3 upgrades to get something that sounded better. If you keep your eye out you should be able to snag one for 1k or so on the used market.
Upgrading preamp. Best for under $1K
I am planning on upgrading my preamp and was wondering what would be the best preamp for under $1K. Currently have the Rotel RC-995 with a B&K ST2140 amp and Vandersteen 2ci speakers. I like to stay with SS unless their is tube pre in that price range.