I don't have my Cornwalls yet...should be here this week.
I do have the Outlaw RR2150 and so far I'm impressed. I have it hooked up to some old crappy Panasonic speakers that were lying around and they actually sound pretty good with this amp. I don't have my CD player yet either so I'm using my ipod's headphone out, forgot my line out dock, to the aux input jack and I am suprised that it sounds as good as it does. The Cornwalls will be the real test for the ipod and I doubt I will be as impressed. My other Klipsch speakers are real picky about the quality of my mp3's so I assume the same will be true of the Cornwalls.