The MXR Poly Blue Octave offers a full palette of pitch-shifting possibilities with four separate octave divisions — one down, two down, one up and two up. Players can control the level of each in the mix as well as decide whether to run them with the contemporary clarity of polyphonic mode or the raw vintage grit of monophonic mode. The pedal features a Blue Box pedal-inspired fuzz mode and a dual Leslie-inspired/Phase 90-inspired modulation mode.
