Shure RK100PKW RFI Resistant In-Line Preamplifier for All MX Models (White)

The Shure RK100PKW is a Radio Frequency Interference (RFI) rejecting preamplifier for all Shure MX series microphones. The RK100PKW features radio frequency interference 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.