A nose angle sensitive disc means you need to focus on the release angle to get optimal flight. Some confuse this with squirrelly or unpredictable. The Volt is nose angle sensitive, meaning the more you learn to control the nose, the more lines you open up. It also means poor form exposes this
The Amp can be thrown slightly down or up and will fly the same. The lines don't really change as the nose changes. Now going extreme nose up changes that.