Bayne, I don't have Axiom amplifiers, but can certainly comment on the general "headroom" point. You didn't specify your listening distance, which is far more significant than home room volumes(which don't need to be "filled" with sound at the level needed at your listening position), but at a typical distance of about 10' your 3808 can drive your speakers to above safe(to your hearing)listening levels. Added headroom is meaningless unless it's actually used on occasion. Unused headroom is simply that: unused.
