I just got a new amp yesterday it is a marshsounddesigns a400s (www.marshsounddesign.com), It is a 2X200w amp and it is HUGE (compared to what I am use to). My old amp (that I am now using as center and rears, was a Rotel 976 (exact same circuitry as the new 1066 amp). So I went from using the rotel in 3X150 as my front 3 speaks and a NAD 214 2X80 for my rears, now I have the Marsh 2X200 for fronts and the rotel 3X150 for the other 3 (so all channels got upgraded). As I was listening I was trying to hear a difference, then I immediately gave up thinking "I am not going to hear a big difference right away, don't even bother straining your ears". So I continue to listen to music to enjoy it, NOT compare. Well, as I start relaxing I noticed more of subtle details in the music I was listening too. I really noticed it when watching/listening to Metallica S&M dvd (I know it isn't even DTS, so how would I notice more detail with a poor resolution?), but the highs, the detail of the cymbols, the crackling of the horns etc... just seemed to have more detail. This is similar to when I started to listen to SACD and DVD-a (on a very good disc), but not quite as dramatic. somtimes I wonder if it is my imagination, but the interesting thing is that i really started to notice it when I told myself not to worry about it, and just relax and enjoy the music. btw, I am running B&W cdm7 mains and cdmcnt center, with a parasound pre/pro, the marsh amp was a demo so it has already been "broken in" any thoughts???