The DGX6400-ASB is two pairs of audio switching boards that include two Input and two Output boards for the Enova DGX 6400. The boards enable a host of audio switching capabilities including Audio Breakaway and Downmixing. DSP functionality includes a 10 Band Parametric EQ on every output which allows audio tuning for each specific environment based on its acoustics. The Enova DGX Web Configuration interface makes it simple and easy to set up these audio features with the Enova DGX. It includes a test tone generator that allows testing of every audio connection without the need for a separate audio source. The Audio Switching Boards are only sold in pairs and must be used together.