Creating fun and unique guitar pedals and DIY parts
(decidedly NOT regurgitating the same handful of tired circuits)

Current Pedals

Many pedals never make it to this page, so be sure to follow on Instagram to see more

The Expanse harmonic tremolo pedal The Expanse Harmonic tremolo you can keep on Earth, or get lost in space.
Sona Fuzz Sona Fuzz High gain tone queen with a touch of class
Tiny Fuzz: Illustrator Series Tiny Fuzz: Illustrator Series Extremely affordable, customizable, dark, brutal, and gorgeous.
Desktop Expression Slider Pedal Volume + Expression Slider Adjust your favorite settings by hand, without bending over.
Mimir's Horn Mimir's Horn The younger, more affordable sibling of Mimir's Well: All the same sounds in a simpler package.
Trio+ Deluxe True Bypass and Footswitch Trio+ Deluxe True Bypass Get rid of tone suck with your Trio+. Includes built-in replacement for the Digitech FS3X footswitch.
Playable Christmas Ornaments Playable Ornaments Christmas ornament guitar "pedal" kits you can build and play
Beginner Pedal Kit - DIY Pedal Beginner Pedal Kit The world's most beginner-friendly (and budget-friendly) DIY guitar pedal kit
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Unavailable Pedals

Coming soon, temporarily unavailable, or permanently out of stock.

Mimir's Well - FV-1 DSP Pedal Platform Mimir's Well
Out-of-stock
The ultimate workhorse: Pick and choose your favorite, high-end reverbs, delays, modulations, and more.
Dark Commotion Dark Commotion
Limited Run
Black Noise (BN-5) Clones
The Expanse in Chameleon Starlight finish by MAS Effects Chameleon Starlight edition of The Expanse
Limited Run
Sometimes teal, sometimes purple, sometimes black... and always sparkly and gorgeous
The Expanse with Through a Prism finish by MAS Effects Through a Prism edition of The Expanse
Limited Run
In the right light, magic happens
Custom Guitar Pedal One-off Pedals Single pedals and prototypes

Customer Posts

Tag @MAS_Effects to see your gear here

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Also follow on Instagram (@mas_effects) for more frequent updates and pedals that never make it to the site.

DIY Guitar Pedals

Add-ons, Kits, and PCBs

If you like to make your own pedals I have quite a few interesting modules, kits, and PCBs. Visit the DIY page for more info.

MAS Effects Star PCB circuit board
Relay Bypass Kit for DIY Guitar Pedals
OLED module for DIY guitar pedals
StompFuzz - ridiculously tiny switch-mounted Fuzz Pedal PCB
PicoFuzz - ridiculously tiny Fuzz Pedal PCB
VU Meter Driver PCB for DIY Guitar Pedals
Breadboard adapter for FV-1 or other SOIC and TSSOP SMD ICs
Mimirs Well Kit - DIY Guitar Pedal with TFT screen and FV-1
Playable Guitar Pedal Christmas Tree Ornament
More DIY...