When you plug the mics in, is the Phantom power already on, or are you turning the phantom power on after the mic is plugged in. I was using a Pair of Nuemann TLM 103's a few months back or maybe it was the AKG 460's, I can't recall, either way they were plugged into my Great River while I had left Phantom Power On. I don't have the manual in front of me, But it stated something the the effect of don't plug the mics into the pre with phantom power on because it may "magnetically charge" the capsule ot something similar. (I'm sure it didn't say Magnetically charge, that's just my mental picture book explanation) When I disengaged the phantom, waited a few seconds, and re-engaged, I never heard the noise again. (The Noise was the Strange random clicking, which actually varied depending on how much moving around the performer was doing.)
One of the posted mentioned the strange clicking noises, and it reminded of this.
Bob