I haven't tried it, but the idea is brilliant. I would love to be able to use the interface on a $5 machine... I would also feel compelled to still buy an OP-1

I haven't tried it, but the idea is brilliant. I would love to be able to use the interface on a $5 machine... I would also feel compelled to still buy an OP-1, though, since they obviously put a lot of effort into R&D.