Black Lion Audio's audio interface, the revolution 2x2. I loved it for its powerful sound, which you wouldn't expect from a bus-powered device for both input and output. It's in excellent condition, as it's never been taken out of the house. I'm selling it because I'm upgrading to an interface with more inputs and outputs. Includes all accessories and original box. Please contact me if you have any questions. Black Lion Audio Revolution DTM DAW