Shure RK100PK RFI Resistant Preamp for MX Microphones

The Shure RK100PK is an in line preamplifier that protects Shure MX microphones from unwanted radio frequency interference. Rather than shaping tone or adding coloration, it focuses on keeping buzzes and dropouts caused by nearby transmitters, lighting rigs, and grounding issues out of the signal path.

A standard 3-pin XLR connector lets you place the unit directly between the microphone and any mixer, audio interface, or DSP. It draws the small amount of current it needs from the existing phantom-power supply, so no extra batteries or external adapters are required.

The RK100PK works with a wide range of Shure capsules, including lavalier, headset, boundary, and podium models in the MX, Beta, SM, WL, WBH, and PG families. That flexibility makes it a natural fit for broadcast booths, corporate boardrooms, houses of worship, and live event venues where different mic styles share the same signal chain.

If you depend on Shure microphones for clear speech and consistent performance, adding the RK100PK gives you an extra layer of assurance whenever RF-heavy environments threaten to intrude on your audio.

Highlights:

• In line preamplifier that rejects radio frequency interference
• Standard 3-pin XLR output for straightforward integration
• Operates on external phantom power, no batteries needed
• Compatible with Shure MX, Beta, SM, WL, WBH, and PG microphones
• Shields audio from noise introduced by RF transmitters, power sources, and grounding faults