Krell KAV 300-iL if you want fast, clean, and transparent. The sound is the result of Krell's use of its current-mode gain topology, trickled down from its FBP line of amps and Current Tunnel preamp, in a now fully-balanced preamp section. Basically, you're getting CAST technology between the amp and pre section. Very clean; very low noise floor. Of course, some dislike the Krell sound, but it's certainly not tubelike.
