Seb Francis wrote: > David Brown wrote: > >> It's worked on everything I've used it with. Not a single problem. > > Good to know. So it seems it's safe to work with the assumption > that a MIDI input has 220R and 1.3V diode. Except you will have a problem now if you are being driven by Seb's 3v3 MIDI output :) Neil -- http://www.njohnson.co.uk