In many circles machine control is simply another name for Sony’s 9-pin control protocol. And in a general sense that’s all it is – a method and standard for controlling and synchronizing audio and/or video machines. The phrase ‘Machine Control’ has been specifically coined by Digidesign as a product name in reference to its interfacing and ability to control machines via the 9-pin standard from within the Pro Tools environment. Machine Control is an option you can add to your Pro Tools system to enable this functionality. It also works with the V-LAN protocol, and may include others in the future.