Basic Audio Tri/Ram Muff Fuzz Pedal w/ 2 Guitar Cables Tri/Ram switch toggles between the cutting, tighter low end of the "Ram's head" and the looser bassier and creamy "Triangle" Big Muff. The lower gain range has been tweaked for brighter and more useable lower gain fuzz and overdrive. With the Fuzz knob turned down, high end is preserved and not dull.