Electro Harmonix OctavixOctavix delivers the definitive late 1960s fuzzed out, octave up sound together with modern enhancements that update the classic concept. Housed in EHXs rugged nano package, the Octavix features Volume, Boost and Octave knobs. Volume regulates the output level of the pedal. Boost controls the amount of fuzztone and Octave adjusts the volume of the octave above. A mini toggle lets the player select between 9 or 24 volt power rails and determines the