I went through the first 95% of the work to build a little midi clock --> tap tempo converter. Basically it takes a midi clock input, you set a dial to divide the clock down (so you can tap tempo on eighth note or 8 beats, or anything in between), then you tap the first tap, it'll do the second tap for you. This was for a vortex, but it could have worked with any basic digital delay that had a tap tempo input. In any case, the last 5% is always plenty of work, and I quit when I realized that I personally wouldn't use such a thing very much at all. I don't own a dl4, so I also don't know if it has a tap tempo input for the looper or whether you'd have to go inside and wire it in yourself. There are midi clock to din sync converter chips from multiple sources: http://www.blacet.com/MSdata.html Using a divide-by-n chip you can output a pulse every beat, or a pulse every 4/4 measure, or whatever you want to dream up. As far as off the shelf stuff, I don't know of anything right now. Jon > Duncan, > Are you really giving these midi-clock-derived pulses some serious thought? > > If so, please use this list as a sounding board!