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MXR Deluxe Bass Fuzz Effects Pedal   

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The Jim Dunlop MXR M84 Fuzz Deluxe bass effects pedal is part of the award-winning MXR Bass Innovations line. Dunlop dug up a rare vintage fuzz and m...Read More

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See All MXR Overdrive, Distortion, Fuzz & Boost Effects Pedals

Vintage fuzz for today's bassist.

The Jim Dunlop MXR M84 Fuzz Deluxe bass effects pedal is part of the award-winning MXR Bass Innovations line. Dunlop dug up a rare vintage fuzz and modified it for the modern bassist. The resulting stompbox delivers a cutting and bold fuzz tone without degrading the punch and clarity of your original signal.

With separate Dry and Wet level controls, the Bass Fuzz Deluxe sounds like you're running two different amps. Blend to taste, from subtle hairiness to full on raging fuzz, with Fuzz and Tone controls affecting only the Wet signal. The Bass Fuzz Deluxe features true hardwire bypass.

  • Powered by one 9 volt battery or a Dunlop 9 volt adapter (not included)
  • Separate Dry and Wet controls
  • Tone and Fuzz knobs

Get this classic fuzz sound today. Call or click to order.


Review Snapshot®

by PowerReviews
MXRDeluxe Bass Fuzz Effects Pedal

(based on 2 reviews)

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Reviewed by 2 customers

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(2 of 4 customers found this review helpful)


The disappearing fuzz

By Greys

from KY

About Me Professional Musician


  • Compact Design


  • Disappears In A Mix
  • Low Volume
  • Poor Sound Quality

Best Uses

  • Home use

Comments about MXR Deluxe Bass Fuzz Effects Pedal:

The MXR Bass Fuzz may sound fine when you're rehearsing on your own without a band behind you.
However, as soon as the rest of the band kicks in, prepare for your bass to disappear. The fuzz lacks any midrange. Even worse than an EHX BMP. This requires you to crank the clean back in just to hear your bass again. Then you really can't hear the fuzz...

You can't even really boost yourself much above unity gain either. With such a drastic mid scoop, you need a lot more volume than it has.

I would recommend looking for another bass fuzz if you are using it in a band. If you don't mind the extreme scoop for playing alone at home, it might be fine.

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(10 of 13 customers found this review helpful)


Excellent Fuzz, it's a keeper!

By Frenchy-Lefty

from Campbell, CA

About Me Experienced


  • Compact Design
  • Excellent Sound Quality
  • Good Selection Of Effects
  • Responsive


    Best Uses

    • Home Studio
    • Performances
    • Professional Recording

    Comments about MXR Deluxe Bass Fuzz Effects Pedal:

    I was looking for a fuzz that would not get buried in the mix and retain some low-end. I used one of of the great coupons offered by Musiciansfriend and got a great deal on it. The Bass Fuzz Deluxe is exactly what I was looking for. Whether I use it with my flatwound strung vintage P-Bass or my Yamaha TRB1005 it sounds fuzzy, heavy yet not messy or overloaded with low-mids. This effect is more versatile than you may think due to the fuzz/clean blend. Good thing it is a true bypass as it would have been a deal-breaker for me. I never buy an effect without a true bypass as it will suck up your tone even when it is off. I mostly play Alt Rock, Funk and Reggae and find some applications for this effect in all those styles. I actually like its sound better than the demos I saw on Youtube. In addition the pedal is small and looks cool. It's a keeper!

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