Audio-Technica AT8657/LED Flush-Mount Microphone Adapter w/ Led Ring and Touch Switch for External ControlFeaturing a flush, tabletop mount design, the AT8657 LED microphone socket allows for the easy use of any 21 mm gooseneck or button style boundary microphone with a 3 pin XLRM type output including our ES945 and ES947 in a variety of presentation environments. The sockets logic out capability permits control of remote devices from a programmable capacitance switch, so users can easily trigger an external device (e. g., a camera or light) with the