I'm also using the Dunlop DVP4, and very happy with it connected to the stomp. I've got that and a little mosky tap switch both connected with a trs breakout cable. As Higgie mentioned, you've got to take a minute to get the settings right on the stomp, and I think maybe I had to flip a mini switch in the Dvp4 too, but it's been plain sailing since then. Nice quality feeling pedal, and a perfect match for the stomp.