The EasyUSB PRO MIC I/O Interface from Vaddio allows you to use up to 4 A/V microphones in a PC conferencing system with the EasyUSB Mixer/Amp (sold separately). The front panel controls allow you to easily set the desired gain on the connected microphones with the help of four knobs and two indicator LEDs.
The Dip switches on the rear panel allow you to control functions such as the low or high cut filter, phantom power (per microphone), and GPIO for mute status. It also features front panel lock-out to protect the knobs from being tampered with.
The PRO MIC I/O features 3-pin female XLR connectors that allow you to connect table, gooseneck, or button microphones (sold separately). Each input channel incorporates an echo cancellation processing chain that is optimized for use with Unified Communications software applications such as Microsoft Lync, Cisco Jabber, Skype, WebEx, Vidyo, GoToMeeting, etc.