That's great but it only supports the Samsung phones for now:
Quote from the IK page:
"AmpliTube turns your Android device that supports Samsung Professional Audio technology — like the Samsung Galaxy Note 4 and Galaxy Note Edge, and soon to be available on the Galaxy S5, Galaxy Note 3 and other devices."
I remember reading something about a low latency audio Android update several months ago. Maybe this is related?
I hope it becomes available for all Android phones.