Electro Harmonix Big Muff Pi
 The Overhaul modification is our standard modification to improve all generations of Big Muff fuzz pedals. Key component changes tweak the sound and open up the tone of the pedal. The Overhaul also includes an added Body Knob which allows for fine-tuning of the midrange frequencies. The stock tone knob still switches from bass to treble and the added knob shifts the middle frequency levels. By default the pedal will be modified for the Balanced setting as shown in the video below but you can request Wooly or Stock if preferred. The 3-way Timbre Toggle Switch shown in the video is for comparison purposes of the three modes and is not included in the price of the overhaul. 

The Clean Knob works great for bass and guitar. It allows you to adjust the volume of your clean tone while using the original volume to adjust the volume of the fuzz.. Works great to keep the tight rumble of bass guitar or to add a new dimension to your guitar.

Sovtek True Bypass: If you have an affinity for the big, wonky switch that the green Sovtek Big Muffs use but need true bypass then we offer a modification which retains the stock switch but rewires it for true bypass while retaining the status LED. The pedal will look stock from the outside and be 100% true bypass when off. The switch can also be converted to a standard style switch like the one used in the USA model (shown above). Check out our True Bypass page for more info and pricing.

Sovtek Jack Upgrade: This modification replaces the plastic, PC-mount 1/4" jacks with metal, chassis mount jacks.

Our Add-a-Rat option came from the common request to rehouse a Pro Co Rat distortion pedal into the chassis of the large USA Big Muffs as seen in our gallery. We have a miniature circuit board which fits perfectly into the Big Muff and gives a great Rat tone including an LM308 chip and the option for our "more bass" feature for those guitarists that feel the stock one is lacking in the bottom end. Email for more information and see our Pro Co Rat page for info on mods available for the circuit.

Overhaul................................................... $45
Timbre Toggle Switch.................................. $30
Clean Knob............................................... $45
Sovtek True Bypass................................... $40
Sovtek Jack Upgrade................................... $30
Add a Rat................................................. $120