Electrosonic Rockboard, 36-channel version. They were available when I started out in 1981.
You could also get a 48-channel version and an additional preset "bridge" that sat at the top of the console. It had 4 or 5 pushbuttons per channels to select/deselect.
All pin matrix memories, not a microprocessor in sight...
Output through 8-pin cannon EP connectors (6 channels per connector +10V control).
Mats Karlsson