Elizabeth, just about everything is editable with Korg stuff. It is just not as intuitive as the Technics operating system. Yes you can edit sounds and registrations with Korg. It just takes a lot of time to learn a totally different system.

As I said earlier, it is the lack of registration presets (only four STS presets) along with a few other software "features" that turned me off and caused me to get rid of the PA3X.