This device allows you to have different settings for your expressions controls. In addition, the auto switch and preset manager of the device mAp++ are added. With eXp++, all the binded parameters are released when the device is off. And, above all, everything is re-binded when it's switched on again !
    The more interesting is that it is the same for each preset of the device. =)
    In preset one, you can have a mapped parameter, and having it too in the preset 2 but with different settings.
    You can on the fly change all the mapping settings of your expression controller and automate these changes very quickly.
    You can automate the way that the changes change =)
    Hope it will be helpful ! Cheers Julien