I've recently added the EMG piezo 4 channel buffer to my piezo set up on my 4 string fretless, and it has 4 buffered outputs for...midi...? Right now I am just mixing the single channel piezo output with my other two pickups, and it sounds great.
But I never leave well enough alone!
Question is, just what do I need to get the output of the preamp to midi? Is there a converter available? I don't think the Roland or Boss(?) GK stuff will work, as they use magnetic pickups, I believe, for their input, plus connector looks pretty complicated, etc. Any thoughts?