FYI like all befaco modules - the joystick is available in DIY too - I built mine from a kit - it was reasonably straightforward iirc - a little bit of wiring for the joystick was the most difficult part
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities