Shure RK100PK RFI Resistant Inline Preamp for MX Microphones

Phantom power supply and preamplifier for all Shure MX Series microphones. The kit features radio frequency interference (RFI) properties that reject radio noise due to nearby transmitters, powerful 2-way radios, grounding issues, etc. The preamplifier features a standard 3-pin XLR output connector.