I can't imagine that wrap stuff would cause that noise. Sounds like you may have left a cable slightly unplugged? I keep all gear connected and ready to roll for the most part to avoid stuff like this, may want to try that? I did notice in Philly you were breaking down your entire rig and reassembling it before and after the show. If the noise was pretty consistent throughout, I would guess a loose connection somewhere in the chain.
And yeah, keep those cell phones far away from active and any cables.