The five rackmounting members of the Digigrid hardware interface range are, from top, the DLI and DLS, which are specifically designed to connect with Pro Tools HDX systems; the versatile IOX which, with its plentiful analogue I/O, is intended to live in a  live room; the IOC, which offers mainly line–level and digital I/O; and the IOS, which includes a  built–in SoundGrid server and a  broad palette of connection options.