The black MAT 133 Table Stand by Sennheiser is for connecting and operating XLR gooseneck microphones. It is used in audio applications such as in lectures, boardrooms, meeting rooms, and more. The MAT 133 is built rugged and provides an XLR-3F microphone in and an XLR-3M microphone output. This stand uses 24 to 48V phantom power. It is compatible with the MEG and MZH series goosenecks.