Bought a second Casio SK-1 modified by Diabolical Devices on Ebay and it arrived today. It was going cheap so I couldn't resist.
I was surprised to discover the bends are very different between to two keyboards. Both have MIDI and mini patchbays but that's where the similarities end.
The new purchase is shown below and the switches on the right-hand side control the patches if you use the coloured sockets. In comparison the switch on the older purchase controls a pitch variation knob, producing nice warbling vibrato effects.
The switches on the left-hand side of my new purchase can glitch the rhythms, both the keyboard chord basslines and the percussion. It worked better on the former than the latter, which froze and required resetting by turning the machine off and then on.
