Great digital console for studio or live, has never left my home studio, excellent cosmetically and operationally. It has my16-at and my8-at expansion cards installed, providing 24 lightpipe channels. I connected this to the mac via lightpipe through an m-audio profire lightbridge that i will include with the lightpipe cables. It also has my8-ad card providing 8 additional channels of analog line inputs. The list of features is too long to mention, but easily researched online. For local buyers (san francisco bay area) i have a custom built console for this board that has 24 rack spaces, padded armrest, and 2 drawers. I'll add this for free, but cannot ship. I paid over $12000 for this board, letting go for $2500 + shipping. Only selling because i have to downsize, this is one of the best pieces of gear i've ever owned, great product. Text tony @510-461-0944.