Just found out it's a custom MIDI controller put together by LIVID. I know I'd never seen anything quite like it before! I used to have a Roland SP-808 that could do some of the same things, but tried to do way too much.
Some have too many pads like the Ableton Launchpad:
Others have too many knobs...
But his controller (and stock LIVID's) look like just the right mix of knobs and pads: