MAS Effects: Interesting Guitar Pedals and DIY kits

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 you can keep on Earth, or get lost in space.

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

Sona Fuzz High gain tone queen with a touch of class

Tiny Fuzz: Illustrator Series Extremely affordable, customizable, dark, brutal, and gorgeous.

Volume + Expression Slider Adjust your favorite settings by hand, without bending over.

Mimir's Horn The younger, more affordable sibling of Mimir's Well: All the same sounds in a simpler package.

Trio+ Deluxe True Bypass Get rid of tone suck with your Trio+. Includes built-in replacement for the Digitech FS3X footswitch.

Playable Ornaments Christmas ornament guitar "pedal" kits you can build and play

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

Out-of-stock

The ultimate workhorse: Pick and choose your favorite, high-end reverbs, delays, modulations, and more.

Dark Commotion

Limited Run

Black Noise (BN-5) Clones

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

One-off Pedals Single pedals and prototypes

Reviews

These are just a few. See them all in our shop

Great unique effect!

This pedal is really something special. I was looking for something a bit more "ambient" but I don't normally play that type of music so I needed something that could also do some less washy, ambient sounds as well. The harmonic tremolo is great especially in the...
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-- Matthew N.

( The Expanse )

The Expanse can transform what you know about Harmonic Tremolo Pedals

MAS Effects makes some inspirational pedals and I bought this primarily because I love when builders combine trem with reverb. This one exceeded my plans for the pedal. Running it...
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-- John D.

( The Expanse )

MAS Effects pedals ROCK!

The Mimirs Horn pedal is a swiss army knife of inspiring sounds. Need more flavor on your board? >>> Mimirs Horn is "Choose Your Own Adventure" fantastic! Sounds great on baritone guitars. Would purchase it again.

-- Todd P.

( Mimir's Horn )

A Super Fun Mini Project

This kit is incredibly well made and really easy to put together. I highly recommend this for anyone interested in getting into effects building. It's a fun, simple, and straightforward introduction to through-hole effect soldering.

-- Jeremy E.

( Playable Ornament Kits )

Sona rawks!

Fantastic fuzz that is super flexible for stacking and on it's own. So good I bought a second. Oh and I must mention very fair pricing. Highly recommended.

-- Aaron Cowan

( Sona Fuzz )

Fall in love with any setting

This thing does exactly what Mark says in the description... you can play with it for hours and just have fun with it. However the sound is so high fidelity that you can fall in love with any setting you find and just leave it where it is for your set list. It's really, really cool. It's...
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-- Michael B.

( The Expanse )