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StewMac Interval Fuzz Pedal Kit

StewMac Interval Fuzz Pedal Kit

StewMac Interval Fuzz Pedal Kit With Bare Enclosure

With Bare Enclosure

Item # 2354
In stock, ready to ship!


StewMac Interval Fuzz Pedal Kit With White Enclosure

With White Enclosure

Item # 2354-W
In stock, ready to ship!


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StewMac Interval Fuzz Pedal Kit

About This Item

An octave fuzz you can actually use!
Build your own version of this unique classic.

The octave fuzz is one of the most fun pedals in a player's arsenal. Plug in and you get both fuzz and a tone one octave up. While these pedals are undeniably fun, some are too hard to control and others simply don't sound that great.

We were blown away by this circuit and think you will be too! Not too fuzzy and not too harsh, the Interval Fuzz simply sounds awesome. If you like the revered Dan Armstrong Green Ringer, this is the kit for you—with clean and overdriven amps, it never gets out of control.

Don't buy your next pedal—build it!
Not only does this pedal sound great, it is super easy to build! With no knobs to get in the way, this is a great first project. Even if you've never soldered before you can wire up this surprisingly simple pedal kit in just a few hours.

It's more than just a schematic
We include everything you need to build your new pedal:

  • Top quality components from resistors to switch
  • Road-worthy rugged metal enclosure with all holes pre-drilled
  • Bare or powder coated white finish
  • 3PDT breakout board for low noise
  • Input, output, and power jacks rear mounted for easy cable routing
  • True bypass switch
  • Custom printed labels
  • Easy! Download your instructions
    We've made these instructions ready to download now. You can zoom in on every solder joint and resistor value to make sure your build is perfect from start to finish. With these step-by-step instructions, full color illustrations, and complete wiring guide you'll build a pedal you'll enjoy for a lifetime. Be proud every time you step on the custom pedal that you built.

    Start making and modding pedals
    It's never been easier to have an inspiring sounding and looking pedal. We include labels for all of the controls for a professional look. Paint your own raw metal enclosure or choose a powder coated enclosure that is ready to put on your board now.

    Take the first step to customize your sound.

    WARNING: Cancer and Reproductive Harm -



    Product Instructions

    StewMac Pedal Kit Instructions

    Download the assembly guide and wiring diagrams.

    Customer Reviews

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    • 4.75 average rating from 4 reviews
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    More Than Impressed


    Verified Buyer

    Had my eye on these Stew Mac Pedal Kits for a while now and invested in the Interval Fuzz to see what they are all about. I was more than impressed, and as a guy who has built a lot of guitar effects over the years, that is saying a lot! First, every piece of hardware is strictly top drawer from the Switchcraft jacks, to the one percent precision resistors, to the nicely machined enclosure. I downloaded the easy to follow instructions and it was off to the races! When completed, I plugged in the Interval Fuzz and it performed perfectly, yielding all manner of fuzz from smooth to downright snotty! Thank you Stew Mac!


    Great DIY Project


    Verified Buyer

    I had no experience with soldering anything before I started making this pedal. The instructions and build-along videos made it easy for a noob like me to put this fuzzy little monster together. If I can do it, you can too!


    Fun project that produces an interesting pedal (can complete in a day)!


    Verified Buyer

    This is my second pedal build, and this one was simpler and more straightforward than my first one.

    The quality of the components is very good, and the instructions online were clear and complete. My only gripe was that I wished the order of the resisters on the parts list was the same as the order they appear in the installation. That would've helped a bit. There are also some helpful videos that StewMac put together for this pedal build.

    The finished product is a good fuzz pedal, but a little more gated and "spitty" than a typical FuzzFace type--especially with humbuckers. There's a little volume drop with single coils, but nothing too extreme. Still, it's a fun addition to my pedalboard, and it does stack well with other boost and gain pedals.

    You can finish this project in a day (really in an afternoon). I definitely recommend getting a multimeter, as some of the components are small and it can be a bit hard to determine values with just the color codes. Also, that StewMac PC Board Holder is really useful, and helps to keep the board in place when you're trying to solder parts on it (this is especially true when attaching the wires, which is tricky, even with the PC Board Holder).

    Overall, this was a fun project. After knocking out a few more of these pedals, I might try my hand with an amp kit!


    sounds great


    Verified Buyer

    The pedal sound great. Just know that in the directions where it shows the 4.7k resistor that the location is correct but the color code should be Yellow, Purple, Black, Brown, Brown, Not Red, Brown, because the 47k resistor is that color. Also having done Two of the earthquaker kits the paper instructions were nice to have for marking on. Fortunately there isn't a lot this build. However I don't think I would do another without having printed instructions.

    Response from StewMac

    Hi Joshua,

    Thanks for sharing your feedback about the StewMac Interval Fuzz Pedal Kit with us, we genuinely appreciate that. What you have said is accurate and we sincerely apologize for the inconvenience. The resistor you are referring to is the right part but it has been incorrectly identified in the instructions. Our team is aware and they are working quickly to resolve the issue. Thank you again for your excellent feedback and for bringing this to our attention.