So about ATI sourced AVP,s that would be DataSat, Theta and Monolith...wow talk about waiting for a frosty night in Hell. Meanwhile I've had good luck with ATI NCore amps, have owned several Brystons including a pair of 28s. I like the idea of Bryston but they have gotten outrageously expensive. Pound for pound ATIs hold up pretty well. I'd like to see the bake off between the ATI 3300s and the NC54xs.