Like his wrench fuzz it's an amazing sounding pedal.i was looking for a straight forward octave up fx.i chose Chris' version.down the chain it ads absolutely killer shade,spice,what ever you call it you peddlers know what I'm referring to.The box has no knobs.3 holes and a unique and musical octave pedal that seems to respond to each fuzz or distortion or overdrive you use it with.Right now it's on my board first the strymon Ultraviolet. Next the new version 5 of the EQD SUNN life pedal version 5.next the STEP LADDER and finally a vox wah.Running through a Victory Dutchess 40 with a Blackstar St.James 2×12 cab...sounds great.triple great.THANKS AGAIN CHRIS.