Got home too late to do anything, but...I did turn everthing on except the Marantz 7005. With the amp on and everthing still wired up, no noise at all. Turn on the Marantz and all 5 speakers, (not subs) start humming, pitch changes a bit if you listen.

Also with everything on, including the Marantz, all wired, I pull the power plug out of the back of the Oppo and the noise gets louder.

Also I must be crazy but in my opinion playing a blu ray with my older Pioneer BDP51 seemed sharper then the new Oppo? Can't be...

More testing tonight. Thanks.