Seldon,
I did an extensive search to find a best integrated so I could build a system that was minimal in footprint but no compromise in sound. I did audition the ASR 4 box, and more, but bought the APL-Hifi UA-S1 which is the best amp I have heard including many more expensive pre/amp combos.
Its dead quiet and very musical. It just presents the music in a very effortless and natural way. My search for amps has come to an end.