http://www.roland.com/products/td-25/
"Positional snare sensing"
https://youtu.be/KdjTK7PfqL8?t=20m24s
"Positional sensing bei der Snare, positional sensing beim Ride Cymbal"
https://youtu.be/7Det4K8qksU?t=4m18s
"Positional sensing on all the pads [...] toms"
Watt n nu?