I would like to know if the Allen & Heath 2D functions correctly with Disco XT latest version of the software?
According to the developer, the device with any PC software that has MIDI assignable functions. If the Disco XT support MIDI mapping and the drivers for the Allen & Heath 2D device are installed properly, then it should be compatible.
Download drivers: http://www.allen-heath.com/ahproducts/xone-2d/