The Cleartone Challenge is a guitar string version of the Pepsi Challenge. The purpose is to show you that "you can't tell the difference" because the main misconceptions about treated (or coated) guitar strings is that they all sound dull and muffled. Not only do Cleartone Guitar Strings sound just as good as un-coated guitar strings, they sound just as good if not better. Cleartone Treated Guitar Strings have been scientifically proven in an audio lab to actually raise the volume by a few decibel levels when compared to traditional guitar strings. So not only do Cleartone Strings last longer and sound great...they actually make your guitar louder and who doesn't want that. See more videos and get more information at www.cleartonestrings.com.