MXL MXLAC404 USB Boundary Condenser Conferencing Microphone - Black

Boundary USB Microphone

The MXL AC-404 is a USB boundary condenser microphone built for conferencing, court reporting and houses of worship. Three capsules in a surface-mount design give a 180 degree pickup pattern with a 25 foot range. It draws power and carries audio over a single USB connection and includes a built-in headphone or speaker monitoring jack. The all-metal body weighs .2 kilograms and rests discreetly on any flat surface.

Upgrade from built-in audio

Laptop microphones and basic headsets often pick up room noise and lack reach across a table. This boundary design captures speech clearly from a distance of 25 feet while rejecting off-axis sound. The jump is worth it when meetings involve multiple participants around a single device or when recording in reverberant spaces such as courtrooms and classrooms. Plug-and-play USB removes driver hassles on Windows and macOS.

Capacity and headroom

The 180 degree pattern comfortably handles a full conference table or podium without repositioning. At 25 feet the signal remains intelligible for web conferencing platforms such as Zoom. In very large halls or highly noisy environments the fixed gain and single USB bus power may limit headroom, so users needing wider coverage or independent gain control should consider a multi-microphone system.