The MXR Slash Octave Fuzz is a wildly versatile pedal, a collaboration between MXR Innovations and the legendary top-hatted guitar slinger. With separate level controls for octave up and down, and a handy switch for sending the sub octave tones into the fuzz circuit, the Slash Octave Fuzz gives you all the searing octave-up lead tones and the warm, wooly sub-octave tones that Slash uses day in and day out.