I have not had enough time to master all aspects of this KB as I am sure you all understand. The vocal effects, to my taste are better than the PA1xpro. The controls are far better ... you have knobs to control effect level, mike volume and Harmony volume. To me that is a real plus!! The whole vocal processor area is more user friendly. As far as midi files, very easy but the SD1 still sounds the best IMHO.