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Shure MX391

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SKU: MX391

Microflex Boundary Microphone

Low profile, professional boundary microphone with interchangeable cartridges. In-line preamp.

Equipped with features like programmable, silent membrane switches, logic inputs and outputs, and LED indicators, Microflex Boundary Microphones are the high-quality solution for a range of applications such as altars, boardrooms and distance learning centers. Every Microflex Boundary microphone features a choice of interchangeable condenser cartridges.

MX391: Includes attached 4 meter (12 ft) cable terminated with a 4-pin mini connector and separate preamplifier. A rubber strain relief is provided for applications that require removing the 4-pin mini connector and connecting the mic cable directly to screw terminals in the preamplifier.


Flat frequency response across the vocal range for uncolored sound

Interchangeable cardioid, supercardioid, and omnidirectional cartridges that provide optimal choice for each application

Sleek, low-profile design for unobtrusive appearance

Balanced, transformerless output for increased immunity to noise over long cable runs

Programmable on/off switch and LED on/off indicator (MX392/MX393 models only)

LED logic input and switch logic output terminals for remote control or use with automatic mixers (MX392 models only)

Available Options

MX391/CCardioid, Black

MX391/SSupercardioid, Black

MX391/OOmnidirectional, Black

MX391W/CCardioid, Off-White

MX391W/SSupercardioid, Off-White

MX391W/OOmnidirectional, Off-White