The MXL AC-400 is a high quality gooseneck microphone designed to provide the highest level of intelligibility, even with the most demanding conferencing applications. The AC-400 is designed to work as a standalone mic, but can also be used with up to three optional AC-40EXT units. This gives each participant their own microphone with individual mute switches, enabling complete control of the communication within the conference. Featuring solid metal construction and a 15-inch fully flexible gooseneck, the MXL AC-400 makes conferencing situations simple, yet elegant.