The Datavideo DAC-91 2-Channel Analog Audio Embedder is an SDI Audio Embedder that allows the user to embed 2-channels of mixed analog audio signals into the SDI video signal. It features 3G/HD/SD-SDI to support up to 1080p/60 video format and automatically detects and switches between different formats. In addition, mini XLR and RCA audio connectors are provided as inputs for analog audio with left mini XLR and RCA mixed to CH1 and right mini XLR and RCA mixed to CH2. The Audio Box also allows the user to adjust audio gains using the built-in DIP switches.