The Backtrack is a compact stereo audio switcher, perfect for bands running redundant backing tracks on stage or switching between any stereo audio sources. For any performance that incorporates backing tracks or other pre-recorded elements, reliability is crucial to ensuring a smooth performance. Unfortunately, smartphone batteries die, laptops freeze up, and Murphy's Law will always apply. The Backtrack creates a redundant system to ensure that you can instantly switch over to a backup device should any problems arise with your primary playback source. This can be accomplished easily with the push of a button on the Backtrack or via a remote JR-2 footswitch, giving you peace of mind and freeing you up to focus on your performance without worry.