YVCMIC1000EX Extension Microphone for YVC-1000. The optional microphone for YVC-1000/YVC-1000MS, Wired microphone that can be daisy chained to your existing YVC-1000 or YVC-1000MS unit (base units include 1 extension microphone), Up to 5 microphones can be used per unit Omni-directional tabletop microphone Up to 5 microphones can be used per unit Unidirectional Microphones x 3, 360° coverage