The Shure MX391 is a Miniature Black Condenser Boundary Microphone, with In-Line Preamp and 12 foot (4 meter) Attached Cable to XLR Connector.
The Shure MX391 is a Microflex boundary mic that offers features like programmable, silent membrane switches, logic inputs and outputs, and LED indicators. These boundary mics are your high-quality solution for a range of applications including altars, boardrooms and distance learning centers. Every microflex boundary microphone features your choice of interchangeable condenser cartridges.
The MX391 includes an attached 4 meter (12 foot) cable terminated with a 4-pin mini connector and a separate preamplifier. A rubber strain relief is provided for applications where you want to remove the 4-pin mini connector and connect the mic cable directly to screw terminals in the preamplifier.