Thanks, Mario! One of the best things about AM is that the company president responds to posts on the message board!
And thanks for the context regarding the inputs. I figured it was something like that.
Regarding the expressiveness of the interface, it's the most interesting thing I've found to date -- especially for a hand percussionist. The pad layout was confusing until I started playing with "palm-tip" conga/bongo technique. Then it all made sense. (Roughly speaking: heels on pads 2, 3, 6, 9 and tips on pads 4, 5, 10, 11 with thumbs on pads 7, 8.)
The first thing I did when I got the JamKAT+DITI was plug it into my laptop and open a MIDI monitor. I meant merely to check that it was sending notes. But then I started looking at the notes coming out of DITI, and I noticed how hitting the same pad produced different notes. And some kits also sent pitchbend! I ended up playing and watching the MIDI monitor (no music) for 15 minutes -- blown away thinking about the possibilities.
Eventually, I pulled up some instruments in Reason to make some noise. I tweeted my experience, which I think you will appreciate:https://twitter.com/pacothetortuga/status/1149833678870048768
I got the JamKAT two days ago, and I've been blooming with ideas since. Thanks!!!