Vaddio this week launched what it’s calling the EasyUSB PRO MIC I/O Interface, designed to integrate any professional microphone with Vaddio’s EasyUSB audio solutions. The PRO MIC I/O Interface incorporates Vaddio’s unique SmartMIC technology into the device, providing distributed multi-channel acoustical echo cancellation and automatic microphone mixing.
The PRO MIC I/O comes equipped with four independent echo cancellation microphone inputs and one discreet output for interfacing to the Vaddio EasyUSB Mixer/Amp. The system can be expanded to support eight microphones by adding an additional PRO MIC I/O.
Here are all the details: http://www.vaddio.com/press/easyusb-pro-mic-io