1977 ELECRO HARMONIX BIG MUFF π the classic with original Box. Up graded with External Power Adapter

1976. A gallon of gas costs about .59 cents. The USA celebrates its Bicentennial and on Independence Day many of the world’s largest sailing ships converge on New York Harbor in an awe inspiring Parade of Tall Ships. Meanwhile, Mike Matthews and everyone at Electro-Harmonix are working hard in New York City to turn the world onto the incredible Big Muff Pi and Muff Fuzz.

Here’s a great show of Big Muff Pi force from Jeff Bennett