The adapter connects to the user port and lets defmon output:

• LSDJ sync signal
• nanoloop sync signal
• midi clock
• din sync
• clock signal with adjustable resolution from 24ppqn to 2ppqn for Korg Volcas, TE Pocket Operators, Arturia Microbrute, MI Anushri etc

It should also work with Prophet64.

This sync adapter was produced by Scannerboy a few years ago. If you are interested in getting a unit, try to contact Scannerboy at chipmusic.org. With some luck it may still be possible to get hold of one.