Mixing Modes
The EasyUSB Mixer/Amp supports three audio mixing modes for common conferencing applications in
which the product may be used. Each mixing mode automatically configures the internal matrix mixer
appropriately. All mixing modes support PC-based audio conferencing.
USB Conference (Default Mode) – all DIP switches down
For use with a computer running a soft conferencing application. Sums the Line Input with the EasyMic
audio and sends it to the USB Transmit. The USB Receive is sent to the amplifier output, Line Output,
and AEC Reference. In this mode, the computer treats the EasyUSB Mixer/Amp as a device for both
USB playback and USB record.
Video Conferencing Bridge Mode – Switch 2 up
For interfacing the EasyUSB Mixer/Amp to a traditional videoconferencing endpoint. In this mode, the
internal matrix mixer creates the appropriate routes required to bridge the USB audio and traditional VC
endpoint audio signals for proper conferencing operations. This allows both the far end (PC & VC) to
hear the local microphone audio. In addition, the local participants will hear the audio originating from the
PC and VC far end.
Recording Mixing Mode – Switch 3 up
Sends local and far-end audio to an external recording or streaming device. The recording mixing mode
creates an audio mix of the USB far-end audio and the local EasyMic audio signals. This record mix is
sent out the Line Out connection.
Complete Manual for the EasyUSB Mixer/Amp Audio Mixer and Amplifier
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