Glad to know Gary and I are on the same page!
I've heard an ATI amp at my brother-in-law's place, but it was driving small bookshelves, and not really a critical setup. Didn't sound bad, what I heard, but not memorable.
The owner did complain that the fan would come on very often and was audible, and so popped open the case and disconnected - but also voiding the warranty.