Altus four fader base license needed for operation of the product and 4 operational faders. Additional faders can be added with Add on Channel Licenses (3002-00115-000). Altus is a virtual console deployed as a container. Features include 3 dedicated stereo Program buses, plus a stereo Utility bus that can be used for phone calls, off-air recording, or as a fourth Program bus. Automatic mix-minus is provided on each fader, plus talkback functions, Record Mode, Automixing, Show Profile functions for instant recall of up to 26 predefined console “snapshots,” Studio and Control Room monitor controls. Comes with 8 virtual auxiliary mixers.