Celebrate 55 years of the Big Muff Pi and 50 years of the Ram’s Head circuit with a limited-edition EHX Double Anniversary Big Muff Pi!

This commemorative Muff is inspired by the rich history of the Big Muff Pi® and Electro-Harmonix with design elements that pay homage to the many faces of the Big Muff in a special limited-edition laser-etched golden chassis.

For the first time since the 1970s, the Double Anniversary Big Muff Pi will feature the violet Ram’s Head circuit in a “Big Box” full-sized Big Muff Pi chassis for all of the original mojo and magic craved by the true believers.

The limited-edition Double Anniversary Big Muff Pi features:

Limited edition of 555 pedals
Full-sized Big Muff Pi chassis in gold finish
Violet Ram’s Head circuit recreates the most coveted 1970s fuzz tones
Special wooden box to honor Sovtek pedals of the 1990s
Laser-etched serial number
Certificate of Authenticity
Premium velvet bag
True bypass
9V battery
User manual
EHX holographic sticker

Learn more about the limited-edition Double Anniversary Big Muff Pi.