The BG-AEE is a HDMI 2.0 Audio Extractor and Embedder. It has two modes: audio extraction via L/R output from HDMI input source, and the other mode is for removing the original audio of HDMI source and embedding auxiliary audio via L/R input to the HDMI output. It also features EDID dip switches with the ability to lock the video signal to various formats to ensure signal quality.