The BOSS PS-6 Harmonist offers four intelligent pitch-shift effects in one pedal: Harmony, Pitch Shifter, Detune, and S-BEND (Super Bend). It supports easy creation of two- or three-voice harmonies with selectable key and voicing, high-quality pitch shifting, and extreme pitch bending up to four octaves. Control over pitch is possible with an optional expression pedal, making it versatile for creating rich, dynamic pitch effects.