Hi guys.. I went to the shop last weekend just to try out my "performance" on Kawai grand and digital. The new ca5 and ca71 is very similar. The keys are actuall kawai wooden keys so as its arm action. The principle is the same. You can also ajust the keys in side ways when the "hole " is getting too wobbery(its a long way yet). I tried the touch and played few songs so as recording. It turned out to be one of the best one I have ever tired. Ay one else???