The MXR Poly Blue Octave combines modern and classic pitch-shifting styles with fuzz and modulation, making it the ultimate octave pedal for sound tinkerers and tone seekers
Controls: Dry, SUB-1, SUB-2, Mod, Oct+1, Oct+2
Push buttons: Fuzz, Mono
LED: Effect On
Foot switch: Effect bypass
Input and output: 6.3 mm jack
Mains adapter connection: Hollow female plug 5.5 x 2.1 mm, negative pole inside