The $99 Korg SQ-1 sequencer is a really cool little box that leaves us all desiring a little more. I popped it open to get some pictures of the insides to start thinking of possible modifications.
Nothing immediately interesting on the back of the main PCB.
The device runs off a Cypress Spansion FM3 32-bit ARM processor, much like the Electribe 2. Since most of the sequencing work is done in the processor, it would be difficult to do any mods that effect the sequencing.