The DigiTech Drop does just what its name implies: it helps you drop your tuning down from one semitone all the way to a full suboctave with the simple twist of a knob. Use it to simply drop-tune your guitar or flip the Momentary/Latch switch for a swarm of trilling pitch-dips - the Drop is good for the simplest of uses or to create unique modulation effects with literally the flick of a switch.