Skip to main content Skip to footer
Save up to 25% on hundreds of incredible gear picks Shop Now
Top Seller

Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal

Item #: 
1274034486494   POS #:105133458
  • Write a Review
Product Description:

The Electro-Harmonix Bass Big Muff Pi is a distortion pedal that gives bass players that great distortion that the Big Muff is known for with no loss of low end. The Bass Big Muff Pi Pedal features controls for volume, tone, sustain, dual outputs (effect and dry for recording), and a mini switch for bass boost. The Electro-Harmonix Bass Big Muff Pi...  Click To Read More About This Product

In Stock & Ready To Ship

  • Protect Your Gear
  • Free Shipping
  • International Shipping
Have Questions? 866-498-7882
Call our experts for product info and phone-only specials. Or click here to chat now.
Gear returned in mint condition. If you're looking for a virtually new instrument in possibly less-than-perfect packaging, this is a great value.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
Gear returned in great condition, with only minor signs of use, such as slight scuffs or pick marks. It looks and plays like new and may be considered an equivalent to display units found in retail stores.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
Price: $81.40
    Warranty Options
Add to List
Free Store Pick Up: Available Today
Fairfax, VA
View More Stores For Availability Store Information


,
SUN:11AM-7PM
MON-FRI:10AM-9PM
SAT:10AM-8PM
Overview

The Electro-Harmonix Bass Big Muff Pi is a distortion pedal that gives bass players that great distortion that the Big Muff is known for with no loss of low end. The Bass Big Muff Pi Pedal features controls for volume, tone, sustain, dual outputs (effect and dry for recording), and a mini switch for bass boost. The Electro-Harmonix Bass Big Muff Pi Distortion Pedal is powered by a single 9 volt battery or optional AC power supply (not included).

Features

  • On/Off switch
  • Controls for Volume, Tone, and Sustain
  • Dual outputs
  • Mini Switch for Bass Boost
  • Rugged metal chassis
  • Runs on 9 volt battery or optional AC Adapter (not included).
Specifications
  • Dimensions (L x D x W): 6.2" x 3.2" x 5.6"
  • Weight: 1 Lb.
Pro Coverage
Manufacturer's Warranty
One year warranty on pedals. 90 day warranty on all other products.


Guitar Center's Pro Coverage
Pro Coverage gives you added warranty protection for your gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Click To Read More About This Product.

Pro Coverage includes
  • Accidental damage protection
  • Expedited repair or replacement
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to five years from date of purchase
  • Repair authorization-toll-free by phone or via the web
Customer Reviews
Questions & Answers View All
Loading....

Review Snapshot

by PowerReviews
Electro-HarmonixXO Bass Big Muff PI Distortion Effects Pedal
 
4.7

(based on 18 reviews)

Ratings Distribution

  • 5 Stars

     

    (15)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

67%

of respondents would recommend this to a friend.

Pros

  • Excellent sound quality (4)
  • Responsive (4)

Cons

No Cons

Best Uses

No Best Uses
    • Reviewer Profile:
    • Experienced (3)

Most Liked Positive Review

 

A MUST OWN FOR ANY BASS PLAYER!!!!!!!!!

I got this bad boy in the mail yesterday morning. And man, I was ASTONISHED by the sound this pedal produces. I could go from Queens of The Stone Age fuzz to Cliff...Read complete review

I got this bad boy in the mail yesterday morning. And man, I was ASTONISHED by the sound this pedal produces. I could go from Queens of The Stone Age fuzz to Cliff Burton distortion in the flick of a switch. My favorite feature of this pedal is the Dry setting. It takes tone clean tone thats get bypassed to your amp and adds the amount of distortion you want with NO LOSS OF YOUR LOW END. Compared to some of the more pricey pedals out there, i strongly suggest investing in this product. Also don't worry about breaking it. The components are housed inside the medal shell with very durable knobs and switches. The only thing you have to worry about is damaging the floor when you drop it!

VS

Most Liked Negative Review

 

Broke after less than a month!

Seriously. I got this and it doesn't work anymore. Like 0. I even put it at full volume not even a beep.
C'mon guys, seriously.

Seriously. I got this and it doesn't work anymore. Like 0. I even put it at full volume not even a beep.
C'mon guys, seriously.

Reviewed by 18 customers

Displaying reviews 1-18

Back to Top

(13 of 15 customers found this review helpful)

 
4.0

made a good choice

By schecterxxxbassist

from madison, Wi

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

this is definitely a pedal that i would recommend to anyone into rock music, from a small classic rock fuzz (think sabbath), to a full on industrial nine inch nails distortion, this pedal can do it, I felt it added alot more girth to my bottom end as well. Your attack also influences the amount of effect you get as well, great build too. good job ehx

(9 of 11 customers found this review helpful)

 
5.0

Best bass distortion.

By Ben Utah

from San Francisco

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

I have been looking for a distortion that gives that really fuzzy crunch but doesn't lose the low end. This pedal gives you that plus the option to 50/50 your signal as well. Combined with my hollowbody bass this is key component to getting a heavy driving sound. It's built like a tank, simple to use and it kicks tone. What else do you need?

(9 of 9 customers found this review helpful)

 
5.0

A MUST OWN FOR ANY BASS PLAYER!!!!!!!!!

By Deyquan

from Endicott,Ny

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

I got this bad boy in the mail yesterday morning. And man, I was ASTONISHED by the sound this pedal produces. I could go from Queens of The Stone Age fuzz to Cliff Burton distortion in the flick of a switch. My favorite feature of this pedal is the Dry setting. It takes tone clean tone thats get bypassed to your amp and adds the amount of distortion you want with NO LOSS OF YOUR LOW END. Compared to some of the more pricey pedals out there, i strongly suggest investing in this product. Also don't worry about breaking it. The components are housed inside the medal shell with very durable knobs and switches. The only thing you have to worry about is damaging the floor when you drop it!

(8 of 9 customers found this review helpful)

 
5.0

Big Muf Pi (Bass)

By R Pawlings

from New York, NY

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

Great pedal, and really simple. You can Dial in the Tone & sustain, then just turn the volume to where you want it. It remains crunchy @ any volume level. I don't rely on distortion, but like to add it to my sound on occasion. This pedal is great because when you just want to add some fuzz, you can do it, and by using the bass boost switch, you don't loose any of the bottom end (This is the problem I had with other distortion pedals like the boss Bass OD). That's it, really simple, oh, and I guess I should say that between the tone & sustain,you can really dial in a great deal of tones from a little fuzz to some crunchy distortion.

(7 of 8 customers found this review helpful)

 
5.0

must own!

By mc g

from houston, tx

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

this pedal is just sick. huge sound. sustain for days. my favorite pedal on my board. period. if you play any kind of rock bass, you need to have this. i gives everything from black keys or queens of the stone age fuzz to type-0 or sabbath doom.

(5 of 5 customers found this review helpful)

 
5.0

AWESOMENESS

By Pawel

from elgin, il

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

This is the first fuzz pedal I've bought, and it does not look like I'll be needing another one. It can do seemingly anything, from Cliff Burton's screeching tone on "Pulling Teeth", to the wall of fuzz found in Mudhoney's music. The pedal is built like a frigging tank. I doubt it's possible to break this thing unless you run it over with a semi. This pedal has three modes: normal, bass boost, and dry. In normal, you get your ordinary awesome sounding fuzz. In bass boost, you regain your bottom end if you have your tone set high, good for brutal metal riffs. My favorite mode, however, is "dry". This mixes your normal bass sound with your fuzz sound. The volume knob in this mode, instead of deciding volume, controls the ratio of your clean tone to your fuzz tone. Overall, I wouldn't look any further than this pedal if you want a high-quality fuzz sound.

(4 of 7 customers found this review helpful)

 
5.0

No more a bass

By Daniel

from Miami, Florida

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

I bought this pedal like a month ago, and I bet you that if you play without been seen, they think you play the guitar, I like it alot because Cliff Burton used it and is a very good pedal, the only thing is that it consumes to much battery, but for the kind of boot it gives, also it slides a little bit, but is a good pedal.

(4 of 4 customers found this review helpful)

 
5.0

Legendary bass distortion!!!

By drbeanz

from VT

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

This pedal is incredible! The power you get from this pedal is amazing! I can�ۡ���t get enough of it; it�ۡ���s so versatile and packs a heck of a punch! I was inspired to get this pedal because I know Cliff Burton used one of these pedals and if you listen to his backing tracks, you can the same exact sound out of this pedal, its so grainy, punchy and beefy! If you play metal bass it defiantly adds a lot to the sound. I have owned this pedal for about 2 years now and I gotta say, it�ۡ���s been used thoroughly on my pedal board in ways that I would have thought. The light fuzz effect you can get out of it is great for doing 80's disco rock and if you really get into it jazz solos! but when you want to get the biggest juiciest sound out of it you just crank up you tone on the pedal and amp , and set the sustain all the way up and bam the perfect sound for any metal player. As you would expect from Electro-harmonix this pedal is build like a tank and the switch to activate it extremely satisfying to step on. I highly recommend this pedal to every rock bassist, it will give you that edge you have always needed.

(4 of 4 customers found this review helpful)

 
5.0

Change Your Tone!

By Felix

from Columbia, Maryland

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

So I've been recently getting into bass effect pedals so after looking online to see what everyone was using i picked this one up. I plugged it in and gave it a go! I must say it sounds really good! You can dial in a little distortion for a barely overdriven sound or you can crank it all the way up to get the Muse Hysteria sound. Its pretty versatile. I would say that it can get you that distortion sound you are looking for which is why so many professionals are using them. So if you have the cash definitely give one a try! I think you will really like it!

(2 of 6 customers found this review helpful)

 
5.0

great product

By MetalBassist13

from Orange,TX

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

I like this product.This product is great. The features of this pedal produces what I want from a distortion pedal.What is also really good about this product is the bass boost.The bass boost really makes the sound real good. This pedal is just what I need and want from a pedal. I highly recommend this product to the fullest extent to anyone who wants a good pedal.

(2 of 3 customers found this review helpful)

 
5.0

wooooooooooooooooooooooow!!!!!!!!!!!!!!!!!!!!!

By muse lover97

from Seattle WA

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

this is SSOOOOOOOOOOOOOOOOOOOOO worth the 80$!!!!!!!!!!!! my ibanez sounds EXACTLY like Chris's bass for the song "time is running out" or any other distorted bass sound by Muse! out of the box its great sounding but give it a few tweeks and the sound will blow you away. buuuuuuuuuuuuuuuuuuuuuuuyyyyy it!!!!!!!!!!!!

(2 of 3 customers found this review helpful)

 
5.0

A total must-have for every bass player

By Matt Murray

from Mayfield Heights, Ohio

Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

This pedal has an awesomely distinct thick, crunchy fuzz tone that adds plenty of edge and boost that will make your tone sound amazing. I use it along with the Boss ODB3 overdrive and when they're combined, the sound is like nothing you'll get with any other distortion pedal. I bought this pedal in January of 2011, and I have never had a single complaint about it in the two years of it being apart of my effect arsenal. The only issue I have with it is the bass boost mode, that sort of just makes the tone go all muddy and bottom-heavy, but when in regular or normal mode, there's a hiss that can be slightly annoying. Besides that, it's a perfect pedal for any musician who enjoys having a loud, aggressive sound.

(1 of 1 customers found this review helpful)

 
5.0

Vicious grind with clarity of your original signal

By Metalbass79

from Earth

About Me Professional Musician

See all my reviews

Verified Buyer

Pros

  • Compact Design
  • Excellent Sound Quality
  • Responsive

Cons

    Best Uses

    • Amateur Recording
    • Home Studio
    • Performances
    • Professional Recording

    Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

    I've been looking for something to add a little grit to my bass tone, but not obliterate my natural tone. This thing is truly a vicious, snarling wolf waiting to be unleashed through your rig. Tons of gain on tap and still has the ability to have my original signal along with it. There is a good reason that this has been the bass fuzz of choice for so many professionals.

    (1 of 3 customers found this review helpful)

     
    5.0

    The bees knees ;)

    By Cameron Steinbach

    from san antonio TX

    Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

    I got this pedal like 4 months within me playing and leme tell you...this thing has made me progress so much!!!!!!!!!! not just in my style of playing but more into the veriations of music to be able to play and simulate perfectly. this pedal will give you any sound you want and everyone should own one!

     
    5.0

    "The BEST fuzz/muf to get the Gilmore tone is the Bass Muf!

    By Reb

    from Ny

    About Me Experienced

    Pros

    • Excellent Sound Quality
    • Responsive
    • Versatile

    Cons

      Best Uses

        Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

        I was more shocked then you when I was reading the highly informative, well respected , holy grail and ever so popular web site explaining /breaking down David Gilmores tone and how to get every single Gilmore sound ever played by the great Mr Gilmore. Anyhow, he was discussing the different fuzz box's that he had used over the years pink Floyd album/eras...He said that the closest muf to the EHX Rams Head( that Gilmore was known to use) is the Bass Muf. He explains why the components used and how the mufs treble/highs often hurts to listen to especially on the wrong amp... As well as scooped mid range however the BASS Muf tames the high end and really boosts the low mids and low end. Additionally it compresses the guitar in a cleaner way yet sustains longer as well. I have yet to jam hard with the pedal for its just arrived, however I plugged it in and got tones that I would never think a bass pedal would have with a electric guitar.

        (0 of 1 customers found this review helpful)

         
        4.0

        Great pedal poor construction in the long run

        By Rosco

        from Fort myers fl

        Pros

        • Excellent Sound Quality
        • Responsive

        Cons

          Best Uses

            Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

            Great sound great pedal. Thee only thing is that after awhile, the hardware for the input and output jacks loosen and eventually fall off if you dont notice it

            (0 of 1 customers found this review helpful)

             
            5.0

            Shipping was a bit chintzy

            By Bhazulle

            from Ferron, Ut

            About Me Experienced

            See all my reviews

            Pros

            • Excellent Sound Quality
            • Responsive
            • Versatile

            Cons

            • some shipping dings

            Best Uses

            • Amateur Recording
            • Events
            • Home Studio
            • Performances

            Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

            Great product. Absolute tank.

            (0 of 13 customers found this review helpful)

             
            1.0

            Broke after less than a month!

            By ChrisplaysBass

            from Dubai, UAE

            About Me Experienced

            Pros

            • Sounded Good

            Cons

            • Breaks Easily

            Best Uses

              Comments about Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal:

              Seriously. I got this and it doesn't work anymore. Like 0. I even put it at full volume not even a beep.
              C'mon guys, seriously.

              Displaying reviews 1-18

              Back to Top

              Questions & Answers
              You are changing the Ship-To country.

              Our product catalog varies by country due to manufacturer restrictions. If you change the Ship-To country, some or all of the items in your cart may not ship to the new destination.