Audio-Technica ESW-T4107/925C6 ESW Desk Stand Transmitter w/ES925 Gooseneck Cardioid Microphone - 6"The compact ESW T4107 925C6 Desk Stand transmitter with microphone is an optional component for use with Audio Technica's Engineered Sound Wireless systems (sold separately). The transmitter comes with a 6" cardioid ES925 gooseneck microphone that delivers clear, present dialog capture with a moderate level of surrounding noise rejection. There's a two state LED mute status indicator light on the top panel with seven selectable custom colors for at a