Amazon.com: DigiTech DROP Compact Polyphonic Drop Tune Pitch-Shifter : Musical Instruments
Used DigiTech Drop Dedicated Polyphonic Drop Tune Guitar Effects Pedal 691991202902 | eBay
Digitech The Drop – Thomann United States
DigiTech Drop Polyphonic Drop Tune Pitch-Shift Pedal Review - Sweetwater Sound - YouTube
Drop Tune Pedals – FAQ & Buyer's Guide!
PSA To everyone who has a Floyd Rose, or just hates downtuning: get a Digitech Drop pedal! It has 7 stages (plus an octave, and octave+dry), each one tunes your guitar 1/2