The revolutionary Ditto Jam X2 Looper features our cutting edge proprietary BeatSense technology, making it the first looper pedal ever to automatically keep your loops from drifting out of sync.Our state of the art algorithm is able to snip, stretch and compress each beat of your loop dynamically to your tempo while still maintaining audio quality. This means your Ditto Jam X2 automatically stretches the loop by a couple of milliseconds to make it fit the pocket so your performance is always nice and tight.