Wadia : what amp / preamp ?

Hi,

just wondering what other Wadia owners out there use as a front end amp/preamp combination ?

Im looking for a transparent, precise and really wide soundstage sound. Im not too keen on warmth though....and i need a seperate preamp so no direct connexion for me. I need both an amp and a preamp.

Any help much appreciated.

Cheers
Xav