Shure RK100PK MX Model RFI Resistant Inline Preamp

The Shure RK100PK is an inline preamplifier engineered specifically for Shure's Microflex microphone series. Its primary function is to boost resistance to radio frequency interference, a common problem in conference rooms, houses of worship, and broadcast environments where wireless devices, cell phones, and RF transmitters can introduce unwanted noise into the audio signal. The preamp connects inline via standard XLR connectors, sitting between the microphone and the mixer or audio interface without requiring any additional power supply beyond standard phantom power.

As a genuine Shure replacement part, the RK100PK is built to the same standards as the original preamps shipped with Microflex microphones. Its compact, unobtrusive design adds minimal bulk to the cable run, and installation is as simple as connecting two XLR cables. For installations experiencing persistent buzzing or interference artifacts, this preamp provides a targeted solution without the need to replace the entire microphone or redesign the audio chain.