With the switch set to momentary you can turn the Drop into a true performance pedal

Buy at www.musicianscart.com DigiTech Drop Polyphonic Drop Tune Pitch-Shift Guitar Effects Pedal DROP-V-01,Compact Polyphonic Drop-tune Pitch Shifter with Momentary-Latch Switching and True Bypass,The DigiTech® Drop is a dedicated polyphonic drop tune pedal that allows you to drop your tuning from one semitone all the way down to a full octave, Get down-tuned chunk without having to change guitars, The Drop also features a momentary,latching switch, With the switch set to momentary you can turn the Drop into a true performance pedal, Fast trills and roller-coaster pitch dips are at the tip of your toes.