Gordon linked this thread to me. My rig. I was dumbfounded during the show, as I saw this happening on the 722 meters. Yet, cannot hear it in playback. The loud dropout/pop is me changing the pad setting on the mics to see if that was the cause. Anways, I've run this exact setup the other weekend (minus the 722, replaced with MT) without this arising. Only difference was no mic pad engaged. Still dumfounded what the problem was. Maybe the mic pad? Regardless, I could not and have not been able to duplicate this problem.