The Poly Tune guitar tuner is a foot switch by TC Electronics that will help you to strum in the correct key. It isn’t just any tuner though, as the Poly Tune can tune up all of your guitar or bass strings at the same time. Just strum all of the strings simultaneously and Poly Tune will pick out which ones are off key.
As the world’s first polyphonic tuner, the Poly Tune guitar tuner is sure to make sound check go a lot faster. It is accurate to 0.5 cents. Check out the video to get a grasp of how awesome the Poly Tune is.