Fatboy Barrels

103 reviews Size Guide

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  • Versatility defined

    The Fatboy is at home in the world's most prestigious concert halls, famous jazz clubs, and everything in between. It's our best-selling barrel, and for good reason. Artists who are called upon to interpret a wide variety of music appreciate the Fatboy Barrel’s unique flexibility and versatility. Note: In Japan, this model is known as the Backun Barrel. 

    Specs: Grenadilla or cocobolo wood. Compatible with Bb and A clarinets.

Meet the Backun Fatboy Barrel

California Prop 65 Warning

Customer Reviews
5.0 Based on 103 Reviews
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Rodrigo S.

Backun Cocobolo Fatboy Barrel

I am pretty impressed with the quality of this mouthpiece. However, it does not sound as dark as I would have wanted it to, but I may still need to break it in some more. With additional upgrades, I can see my playing capacity improving much more.

Doug P.
United States United States

Backun Fatboy+ Cocobolo

I recently purchased a Backun Fatboy+ barrel in cocobolo to pair with my Buffet R13 clarinet and Vandoren 5JB mouthpiece. Wow! This barrel really opened up the sound and responsiveness of my horn. Being primarily a saxophonist, I'm used to more open mouthpieces and free blowing response. With the Backun Fatboy, switching from sax to clarinet is much more comfortable and natural feeling. The stuffiness is gone, and I feel like I have a setup that responds the way I'm used to having my saxes respond. I HIGHLY recommend checking out the Fatboy barrel if you're looking for a more open, responsive experience with your clarinet. Great work, Backun!

Finty W.

Fatboy barrel

The perfect barrel, highly recommended!

Trina L.
United States United States

Love it!

I ordered the Fatboy barrel and Vocalise mouth piece and love my new sound and how easy it is to play with the Legere synthetic reeds.

Liz R.
United States United States

Fatboy barrel for Selmer Signature

Love the level of projection I am able to get with this barrel! The sound is focused and easy to control. Plus, check out the beautiful coloring of this wood.

Aaron K.
United States United States

Expansive Sound

The Fatboy barrel really opens up my sound, providing flexibility, and gives such amazing control over the extreme registers of the horn. Being a doubling jazz musician, I cannot express how comforting it is to know my sound will come out from the very first note, especially when the horn's sitting stand-bye. I love my new barrel!