Left Speaker Emits Static when ANC on

I have a pair of Beats Studio Pro over the ear headphones. When the ANC is on, the left speaker emits constant static. It gets drowned out when music is playing, but if I'm listening to something like a podcast it is impossibly loud. When the ANC is off, the static goes away. I'm thinking it has to do with how the ANC microphones loop back, but I haven't had a chance to break them open and check the connections. Has anyone else had this problem?