Hi Henry66,
May be AudiMute would have what you are looking for . . . http://www.audimutesoundproofing.com/

We have some identical components : Axiom speakers, OPPO BDP-93 and the Pioneer VSX-1120-K. I'm using the VSX 1120-K as a preamp processor with my Axiom A1400-8 amplifier. Do you power your M80s with your Pioneer ?

jc