Just getting back from work to investigating this noise issue more. I am fairly certain now, as gonk suggested, it is a ground loop issue.

I did re-route and formally put all the cables in their proper places and it made no difference. The one variable I have realized is I switched integrated amps about the same time the noise issue started. They were/are both Rowland pieces, but with significantly different internal power supplies (the new one uses the B&W Ice digital power supply). I contacted Rowland and they suggested I pull out the Monster balanced pc and try some different plug in scenarios. I will report back what happens.

Thanks,
Ken