I followed the post "Empeg on a HiFi stereo system" until I lost interest when people starting to talk about floating their speaker wires in mercury and rewiring the Empeg to support digital out.

Anyway I've wired up the Empeg using the 4V pre-outs available on the car dock, and the sound is AMAZING. The sound is crisper and the sound stage is much more prominent; the frequency range seems to be much better as well.