Shure Cardioid - Miniature White Condenser Boundary Microphone, 12' Attached Cable, Detachable Preamp with XLR

The Shure MX391W‑A/C is a low‑profile Microflex boundary microphone designed for speech applications such as conference rooms, boardrooms, educational facilities, and houses of worship. It mounts on flat surfaces like tables or lecterns and is engineered to capture clear, intelligible spoken audio with minimal obtrusion. The unit includes an attached cable and a detachable inline preamplifier with a standard XLR output, requiring phantom power from a mixer or audio system. It uses a cardioid condenser capsule optimized for focused pickup of the speaker while reducing unwanted ambient noise.

Key Features

• Boundary condenser microphone with surface‑mount form factor for conference and presentation use.

• Cardioid polar pattern optimized for speech intelligibility and focused pickup.

• Interchangeable microphone cartridge design allows swapping the cardioid capsule for supercardioid or omnidirectional variants if needed.

• Detachable inline preamplifier with balanced XLR output for connection to mixers, PA systems or recorders.