Muff Off. Side by side comparison of the Earthquaker Devices Hoof Fuzz and the EHX Little Big Muff. Gear used: USA Tele H/H, Mesa F-50 w/2×12. Currently the Big Muff Pi is offered in three versions: the US-made Big Muff Pi, which can be identified by its silvery metal casing; the less expensive Sovtek Big Muff Pi, made in Russia; and the Little Big Muff Pi.