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NYC Big Muff Pi Tone Bypass Pedal Mod

NYC Big Muff Pi Tone Bypass Pedal Mod


NYC Big Muff Pi Tone Bypass Pedal Mod

Item # 2215
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NYC Big Muff Pi Tone Bypass Pedal Mod

About This Item

Take control of your Big Muff
Get the fuzz you love and keep your mids too.

The Electro-Harmonix (EHX) NYC Big Muff Pi is one of the most iconic fuzz boxes ever created. The only problem is the extreme scooped midrange when you engage the pedal. You'll quickly get lost in the mix and lose the tone you've been working for.

You don't need a new pedal! Mod your Big Muff to sound how YOU want.

All the fuzz and none of the mud
With this mod you'll install a switch that will bypass the tone stack, letting more of your unaffected sound to be heard. Now you can have all of the thick and unique fuzz you want, without losing the dynamics of your playing.

It's like getting two pedals in one
Best of all, you can instantly switch between modes to find the right tone for you. This switch was actually a feature on the original New York Big Muffs, but was removed in later versions.

More than just a schematic
We include step-by-step instructions for this mod with detailed pictures. Each step is fully illustrated in color with close-up views of every solder joint, component placement, and lug location.

And we even include directions on how to solder! If you get stuck give our techs a call—we'll walk you through it.

Start making and modding pedals
We've picked all of the right components to give you the best sound quality and reliability you need when tweaking your pedals. Take your first step into modding (and making) pedals and start customizing your sound.

Big Muff® is a registered trademark of New Sensor Corp.

WARNING: Cancer and Reproductive Harm -



Product Instructions

StewMac Pedal Mod Kit Instructions

Make all your pedals sound and play great.

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  • 5.00 average rating from 3 reviews
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Great kit


Verified Buyer

The instructions are in a class of their own. Easy kit to deal with and I’m really happy to have modded my Pi. Great value and an absolute no-brainer if you own the BigMuff. Thanks guys!!


Easy Mod


Verified Buyer

The Big Muff tone mod is easy to do, and just adds an other dimension to an already legendary pedal. There was a little gain with the mod on. I like it.


A Great Mod! Super Tone Improvement!


I installed this mod in about and hour. The tone from my Big Muff Pi is way better now with the bypass. the only caution I would have is that you may want to move the switch a little lower or higher to avoid interfering with the PCB mount during re-assembly.