The Tri-Muff Reissue by Stomp Under Foot contains the circuitry of SUF's '70s Tri-Muff, or Triangle Big Muff. The Tri-Muff Reissue had a limited run and so is relatively difficult to come by. With only Volume, Sustain, and Tone knobs to shape your fuzz, it's an easier and relatively less expensive way to get the original '70s Tri-Muff tone.