I'm planning on upgrading my speakers from the B&W 683's to the 804S'. i currently own rotel's RSX-1058, RC-1082, RB-1080, RCD-1072. now i like to listen to all sorts of music. but the most taxing on my 1080 would have to be psychedelic trance (oforia, atomic pulse, bwicked etc). and i like it loud when I'm listening to this genre. the 1080 is stressed. I'm outputting 100-105dB out of my speakers and after 2 hours the amp shuts down from overheating. my dealer told me theirs nothing wrong with the amp I'm just driving it really hard, and he also said the music that makes it overheat has very dynamic and strong bass. so basically what I'm getting at is i want to upgrade to all 15 series after i get the speakers. i want to bi amp the 803S's. should i go with class d amps or the a/b's??? I want to add that i also listen to jazz, classical, world, indie, easy, etc. and i want that to sound fantastic. I'm not just an electronic freak. and i'm not just needing dB's. so i dont know which i should get. im thinking class d based on heat. but i dont know how thats going to sound with music like jann arden, feist, morcheeba, death cab, earlimart, radiohead, moby, floyd, adele, deerhunter, the decemberists, coldplay, rebeka higgs, norah jones, diana krall etc. RB-1582, 200 watts class A/B or RB-1572, 250 watts class D 
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