Paul, > if this is all you want, you could easily knock something up with an AVR > in a day or so.. midi in -> sawtooth output + gate... Which is what my board is :-) Neil -- Neil Johnson :: Computer Laboratory :: University of Cambridge :: http://www.njohnson.co.uk http://www.cl.cam.ac.uk/~nej22 ---- IEE Cambridge Branch: http://www.iee-cambridge.org.uk ----