Shure RPM110 Wireless Cartridge for Beta 91 & Beta 98 Condenser Microphones

The Shure RPM110 is a supercardioid replacement cartridge engineered for Beta 91 and Beta 98 condenser microphones. This swap transforms your existing mic's pickup pattern to tighter, more directional rejection of off–axis noise–critical for loud stages, drum kits, and ambient rejection in live settings. The supercardioid design narrows the acceptance zone compared to standard cartridges, making isolation the standout advantage.

Swapping the cartridge takes minutes without tools or recalibration. The RPM110 maintains the frequency response integrity of its parent microphone while shifting the polar pattern to supercardioid–roughly 126–135 degrees of rear rejection depending on frequency. This makes it the go–to swap for gigging musicians fighting bleed, bedroom producers recording drums without isolation booths, and engineers mixing live sound where gain structure matters. The cartridge integrates directly into existing Beta 91 or Beta 98 bodies, preserving your mic investment.

Features

• Supercardioid polar pattern for focused on–axis pickup
• Drop–in replacement for Beta 91 and Beta 98 microphones
• Reduced off–axis rejection ideal for loud stage environments
• Maintains frequency response of parent microphone body
• No tools or recalibration required for installation
• Effective rear rejection narrows mic's acceptance zone
• Reduces ambient noise and instrument bleed in recordings
• Compatible with both condenser microphone chassis styles