We originally got interested in Ketron while working with a few folks over on WersiClubUSA. We have been a long time Wersi owner and started that site to share and learn with other Wersi owners. Here's an example of using our Wersi OAX 700 as a "controller" with our SD40. In this example we use the Wersi as a controller and have a mix of Ketron and Wersi sounds being played along with just the drums from a Ketron style since we play pedals on the organ.

Mix-n-Match Wersi and Ketron