The Black Drop by DigiTech 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. The Drop is true bypass and uses 9V DC power supply to easily integrate into your existing pedalboard. General Specifications Input: 1/4" Unbalanced (Tip-Sleeve) Output: 1/4" Unbalanced (Tip-Sleeve) Controls: Amount, Momentary On/Off A/D/A Converter: 24-bit Sampling Rate: 44.1 kHz Power Supply: PS0913DC-01 (US, JA); PS0913DC-02 (EU, AU, UK) Drop Tune Range: 1-7 Semitones Down, Octave Down, Octave Down + Dry Dimensions Length: 4.75" (120mm) Height: 1.75" (44mm) Width: 2.875" (73mm) Weight: 0.36 lb. (163g)