Adcom and early Parasound amps I don't consider high end. A high-end amp will provide a spacious soundstage, float the airiest highs, deliver a full but sparkling midrange, and has excellent dynamics/bass without sounding boomy. It should do all this and still sound musically involving & refined. Given that & without an equally high-end preamp you will fall short of your goals - 02-28-11: Phd
I have seen them send off many a so called hi-end amps, the magic is in the load ..
regards,