Switch between amps. Switch between guitars. Go ahead act all professional onstage. You can do it! The cool thing about Boss s AB-2 footswitch is how it works both ways. You can plug in both your main guitar and the oddly tuned one you only use for that single song or you can split your signal to two different amps and switch between em. Plus you won t get that annoying (and definitely unprofessional) pop when you hit the sturdy footswitch. Hey if your tuner doesn t mute your signal when you use it you can use the AB-2 two switch between your amp and your tuner!