Dunlop CryBaby (a broken one) ... same feel that a real crybaby
Just open it, unsolder jack connector (it is already a stereo jack... so no need to change it) ... 3 wires to solder from the pot to the jack connector ... et voilà !
Just orderer a push-button for foot stomp to replace the original switch (2.5$ on ebay) ... I will use the second jack (output) to bring this control to the kemper as well.