Tube balanced preamp for class D amp?

I'm looking to buy a class D amp (Bel Canto or Seymour) to replace my tube integrated amp but I will also have to buy a tube preamp with balanced connection (and remote) in order extract the best signal from my Simaudio Moon Supernova player. I don'twant to lose the 'tube sound' and my most imporatnt criteria is soundstage. Any suggestions?