This box packs intelligent Harmony, Pitch Shifter, and Detune modes. Plus, it sports BOSS's all-new Super Bend mode for pedal-bending effects and 3- and 4-octave pitch sweeps. The PS-6 Harmonist is an impressive creative tool and a lot of fun to use. Features: 4 effect modes in 1 stompbox: Harmony, Pitch Shifter, Detune, and S-BEND (Super Bend) Easily create 2- or 3-voice harmonies with selectable key and voicing High-quality pitch shifting 3-voice detune capability S-BEND provides up to 4 octaves of extreme pitch bending Control pitch via an expression pedal