You can add a RF choke to each lead of the XLR in the Schoeps mic. We have helped several customers with an RF bead placed around all three wires at the XLR connector inside the mic. The Mouser part number is 623-2643000301. The Fair-Rite brand part number is 2643000301. Placing short leaded 100 pF capacitors between all the XLR pins and one to the ground lug might help also, but the chokes are most effective. Schoeps has a factory modification that is more elaborate, that works very well.