Guys, what do you do for BIG rooms, or folks who are just insane about SPL? I've got a buddy who wants the experience of sitting front row at a 1970 Who concert, without having to invent a time machine... He's got a Denon 2803 that he's been feeding into a stack of Phase Linears, and it isn't cutting it. He's trying out an Arcam AVR300 this weekend, and it isn't doing the trick either. Any ideas?