Shure MX393/S Microflex Supercardioid Boundary Microphone for Installs (XLR Connector)

The Shure MX393/S is a boundary microphone created for installations where spoken word clarity is critical. Its supercardioid pickup pattern focuses on the person speaking while reducing room noise, so every participant on a conference call or in a meeting hears a natural, intelligible voice.

The housing sits nearly flush with a tabletop or lectern, allowing papers, laptops, and cameras to move freely without obstruction. A twelve-foot attached cable that ends in a standard XLR connector makes it simple to reach the nearest mixer, DSP, or interface. The microphone runs on 11 to 52-volt phantom power, a range commonly supplied by professional audio equipment.

Practical control features help the MX393/S adapt to real-world workflows. The silent membrane switch can be programmed for push-to-talk, push-to-mute, or toggle behavior, and its bicolor LED shows status at a glance without mechanical clicks reaching the audio feed. Installers can swap the condenser capsule if a different pickup pattern is needed later, and built-in RF filtering blocks interference from nearby mobile devices. A paint mask is included so the microphone can match custom furniture finishes.

• Supercardioid pattern concentrates on the speaker and lowers ambient noise
• Boundary form factor that blends into tables and lecterns
• Programmable silent membrane switch with bicolor LED status indicator
• Interchangeable condenser capsule supports future pattern changes
• Attached 12-foot cable terminates in a standard XLR connector
• Integrated RF filtering prevents interference from phones and tablets
• Operates on 11 to 52 V phantom power
• Paint mask included for color-matching during custom installations