Shure A15RF RF Filter, XLR In/Out, Passes Phantom Power

The A15RF is an in-line RF interference attenuator that reduces interference from AM radio stations and other RF sources bleeding into microphone lines. It installs between the microphone and the mixer input with XLR connectors on both ends, and passes phantom power through to the microphone. Useful in installations near broadcast transmitters or in venues where long microphone runs pick up unwanted radio energy.