Shure MX391C Surface Mount Low Impedance Wired Microphone Headphone

Designed for professional installations where speech clarity and dependable monitoring matter most, the Shure MX391/C surface-mount boundary microphone brings consistent, low-impedance audio to boardrooms, altars, distance learning centers and security applications. This Microflex boundary microphone uses an electret condenser element with a cardioid polar pattern to focus on the speaker and reduce ambient noise — supporting a frequency response from 50 Hz to 17 kHz for natural-sounding voice reproduction. With a sensitivity of -29.6 dB, a 12' cable and standard XLR interface, the MX391/C integrates seamlessly into pro audio, surveillance and monitoring systems. Programmable silent membrane switches, LED status indicators and logic I/O provide discreet control and easy system feedback for managed environments. Interchangeable condenser cartridges let integrators tailor pickup characteristics to specific room layouts or security needs. Whether you’re outfitting a courtroom, control room or corporate boardroom, the MX391/C delivers reliable, professional-grade audio for speech capture and monitoring. Add this Shure boundary mic to your next installation for improved intelligibility and system control.

• Delivers crystal-clear, low‑impedance audio pickup ideal for boardrooms, distance learning and security monitoring
• Cardioid polar pattern minimizes background noise for focused speech intelligibility in surveillance and conferencing setups
• Durable surface-mount design with 12' cable and XLR connectivity for reliable integration with pro audio and security systems
• Programmable silent membrane switches and LED indicators enable discreet control and visual status reporting for managed environments
• Logic inputs/outputs and interchangeable condenser cartridges allow flexible system integration and scalable coverage
• Built for professional installations where dependable, low-noise wired performance matters