http://proguitarshop.com/tc-electroni... - The TC Electronic Polytune is the new kid on the block in pedal tuner technology. Featuring a patented polychromatic tuning circuit, the TC Electronic Polytune eliminates the need to go string to string while tuning. Just turn it on for silent tuning (muted output) and strum all of your open strings and the TC Electronic Polytune shows you which strings are sharp or flat and allows you to tune within +/- .5% accuracy. This eliminates a good chunk of time when tuning between songs and lets people visually see the affect of say a floating bridge when tuning string to string. Not only does this help get a grasp on tuning your instrument effectively, it lets you know right away what string is out of tune. The TC Electronic Polytune features a standard chromatic tuner as well that is super fast and reliable thanks to the unique tuning magnet feature. This allows the TC Electronic Polytune to adjust the speed of the tuning needle dependant on how close or far away you are from pitch.