SLAMMI PLUS -This polyphonic powerhouse flawlessly transposes your pitch in two different directions over a +/- 3 octave range: transpose up down or both simultaneously! Staggering whammy effects and dive bombs bends harmonies cross-fades between your dry and transposed sounds cocked pitch shiftingâ?¦ this pedal does it all.The 11-position Shift switch selects the maximum transposition starting with D (Detune) a shift of 17 cents that creates a chorus or doubling effect.The Dual setting outputs two pitch-shifted signals. The first follows the Shift knob as if in UP mode. The second transposed signal depends on whether the Slammi Plus is set to Pitch or X-Fade.In Pitch mode the secondary shifted signal bends at the same rate as the primary signal.When in X-Fade mode the secondary signal is set by the Pitch Mix knob and does not bend. The interval choices are in half-step increments up to +/-1 octave. The volume of the secondary signal decreases by sweeping the pedal from heel to toe.Featuring a rugged lightweight design with a traditional rack and pinion style operating mechanism the EHX Slammi Plus is your ultimate polyphonic pitch shifter harmony pedal. Flawless glitch-free transposing over a +/- three octave range Three shift modes: up down and dual Dual pitch shifting mode where the Slammi Plus generates two separate pitch shift intervals simultaneously An X-Fade function where the pitch shift interval is fixed (does not bend) and the foot pedal cross-fades between your dry note and pitch shifted note or cross-fades from one pitch shifted interval to another Fully polyphonic all the time More flexibility in setting the heel positionâ??s pitch shifted interval A Blend control that lets you fine tune the wet/dry mix Rugged weight saving chassis with a traditional rack and pinion style operating mechanism 9V battery included