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Electro-Harmonix XO Bass Big Muff PI Distortion Effects Pedal

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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...Click To Read More About This Product

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OVERVIEW

Designed to deliver distortion with no low-end loss!

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 (sold separately).

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 (sold separately).
SPECIFICATIONS
  • Dimensions (L x D x W): 6.2" x 3.2" x 5.6"
  • Weight: 1 Lb.
Reviews
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Review Snapshot

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

(based on 57 reviews)

Ratings Distribution

  • 5 Stars

     

    (45)

  • 4 Stars

     

    (7)

  • 3 Stars

     

    (4)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

87%

of respondents would recommend this to a friend.

Pros

  • Excellent sound quality (10)
  • Responsive (9)
  • Versatile (9)
  • Compact (7)
  • Good selection of effects (3)

Cons

  • Limited selection of effects (4)

Best Uses

  • Performances (14)
  • Home studio (8)
  • Amateur recording (6)
  • Outdoor events / games (6)
  • Professional recording (6)
    • Reviewer Profile:
    • Experienced (7), Professional musician (5)

Most Liked Positive Review

 

best bass distortion around

if you're looking for a great bass distortion, fuzz, or even a low-gain boost, this pedal is for you!!! i've used for everything from very contemporary worship services to indie...Read complete review

if you're looking for a great bass distortion, fuzz, or even a low-gain boost, this pedal is for you!!! i've used for everything from very contemporary worship services to indie rock/grunge, you name it!!! this pedal does it all!!!!! if you have any doubts, BUY ONE NOW. you won't regret it!!!
so yes while this pedal is very simply laid out, and it appears there's not much to it, its incredibly versatile. between the Tone and Sustain knobs, there's vast amounts of control over the over tone. and all the while, i lose no tone or sustain from my amp (Hartke LH1000 head with a 4X10 cab and 1X15 cab) whatsoever! and on top of all that, the three way mini-switch for bass boost is amazing!!! you can truly sculpt and customize your tone with this pedal.
talk about well built, this thing is rugged!! not to mention the battery life is amazing!! the only complaint i have is that the screws on the bottom come all the way out of the chassis, and therefore could be easy to lose, but there are ways to prevent that.
i was blown away that for something so valuable to my tone and playing in general, that its so affordable! this thing has completely changed my style and opened up so many doors of musical exploration, i don't know if i can put a price on it! i will definitely cherish this pedal for years to come!

VS

Most Liked Negative Review

 

Almost, but not quite

I used to have one of those early 90s army green sovtek muffs that I absolutely loved. Hands down it was my favorite pedal. Unfortunately it was stolen. I bought this pedal to...Read complete review

I used to have one of those early 90s army green sovtek muffs that I absolutely loved. Hands down it was my favorite pedal. Unfortunately it was stolen. I bought this pedal to replace it since everyone seems to say that it is the closest thing going. I think this pedal sounds really good but it just is not quite as smooth and creamy as those old russian muffs. I like the little bass boost switch and both tones are very useable but if you really want that super fluffy, marshmallowy, siamese dream-esque distortion you might just have to go find an old one. I have also found that it sounds completely different depending on what amp you have it plugged into. Not just a little different but almost like it is not even the same pedal. This is to be expected of course but I was really suprised at just how much the tone varied. Into my fender twin it really does not sound that good and I like my mini fuzz face 10x more. Into the effects loop of my orange rockerverb 100 it really comes alive and has a great tone. It also sounds pretty good in the loop of my mesa express5/50 combo but if you are planning to pair this up with a fender you might be sorely disappointed.

Reviewed by 57 customers

Displaying reviews 1-20

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(4 of 6 customers found this review helpful)

 
3.0

Not all that

By DT-VHhr4

from Atlanta

See all my reviews

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

Ok so I had heard good thigs about this pedal, and so I went in expecting it to sound good. I plugged it into a Fender rumble 100 (the same amp I had) and I just could not get a good sound out of it. My guitarist and I agreed that it just didn't cut it. I have tried many guitar pedals and many of them sounded as good or better than this one that is supposedly designed for bass. If you like the sound, then fine use it, but to me it just sounded bad. So, while this may seem obvious PLAY BEFORE YOU BUY IT. No amount of reviews and videos can compare to you actually plugging this in and trying it out.

(2 of 4 customers found this review helpful)

 
3.0

Not a reliable Pedal

By Bassman

from Connecticut

About Me Professional Musician

See all my reviews

Ask me a question

Pros

  • Compact Design
  • Excellent Sound Quality

Cons

  • Irritable Buzz
  • Loud Click When Activated
  • Very Noisy

Best Uses

  • Paper weight

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

The problem with this pedal is that it is unreliable. Every time I activate it, it could work perfectly or it could just totally freak out. Often times the volume is different than where I set it or there is a very loud buzz that wasn't there before. I never know what I'll get when I turn it on. When it works it sounds great. It is too unreliable to gig with.

(2 of 2 customers found this review helpful)

 
5.0

best bass distortion around

By Fender jazzman

from Seattle, WA

See all my reviews

Ask me a question

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

if you're looking for a great bass distortion, fuzz, or even a low-gain boost, this pedal is for you!!! i've used for everything from very contemporary worship services to indie rock/grunge, you name it!!! this pedal does it all!!!!! if you have any doubts, BUY ONE NOW. you won't regret it!!!
so yes while this pedal is very simply laid out, and it appears there's not much to it, its incredibly versatile. between the Tone and Sustain knobs, there's vast amounts of control over the over tone. and all the while, i lose no tone or sustain from my amp (Hartke LH1000 head with a 4X10 cab and 1X15 cab) whatsoever! and on top of all that, the three way mini-switch for bass boost is amazing!!! you can truly sculpt and customize your tone with this pedal.
talk about well built, this thing is rugged!! not to mention the battery life is amazing!! the only complaint i have is that the screws on the bottom come all the way out of the chassis, and therefore could be easy to lose, but there are ways to prevent that.
i was blown away that for something so valuable to my tone and playing in general, that its so affordable! this thing has completely changed my style and opened up so many doors of musical exploration, i don't know if i can put a price on it! i will definitely cherish this pedal for years to come!

(2 of 2 customers found this review helpful)

 
4.0

Purdy good

By BRANDON SMITH

from San Diego, CA

See all my reviews

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

more features than other fuzzboxes I've had. Good value
Good range of fuzz all the way from a slight warm fuzziness to completely indiscernable. The bass boost is useful as long as you don't mind your walls falling down. No noticable loss of tone or sustain

(1 of 2 customers found this review helpful)

 
4.0

Add some punch to your bass rig!

By Redland Bassman

from Advance, NC

About Me Experienced

See all my reviews

Ask me a question

Verified Buyer

Pros

  • Easy to use
  • Quick Set Up
  • Simply Does The Job

Cons

  • Limited Selection Of Effects

Best Uses

  • Amateur Recording
  • Events
  • Home Studio
  • Performances

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

This product simply adds distortion to your bass rig. You can't change the sound, but you can change the amount of distortion and sustain. I recommend this because it adds power and presence to any bass player that wants to be heard loud and clear. Also, this product allows you to keep your bottom end sound while adding the power of sweet distortion. Be sure to purchase the AC adaptor. It will save you from having to buy 9 volt batteries all the time.

(1 of 1 customers found this review helpful)

 
5.0

Great Effects Pedal!

By RythmSectionRyan

from Farmington, NM

Pros

  • Good Selection Of Effects
  • Tough
  • Versatile

Cons

  • Low Battery Life

Best Uses

  • Home Studio
  • Performances

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

This is a durable pedal, made in the USA, with great effects to play with.

You can get anything from a light crunch, to a treble distortion explosion!

The one down side I can think of is this guy can eat batteries. It could be how often I use it, but I went through 3 9Volts in a month.
So look into AC adapters.

It's noteworthy that you can mix your dry input with effects output, so you can keep the fidelity of your bass tones, but still add that extra crunch.

All things considered, I love this pedal.

(1 of 1 customers found this review helpful)

 
5.0

Great Pedal!

By Donkeyfin

from Fayetteville, Arkansas

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

This is the second bass distortion pedal I've owned. The first was the ODB-3. I like the Bass Muff pedal because of the little switch that goes from dry to bass boost. The dry setting is like the ODB-3, it mixes the distorted signal w/ a clean one to keep from losing the low-end. The bass boost is a distorted signal only w/a bass boost. I like the dry setting the most. I just wish it had another knob to adjust the ratio of the wet and dry signal like the ODB-3 has. But the sound it makes is far superior to the ODB-3. Great pedal!

(1 of 3 customers found this review helpful)

 
5.0

For those Who are searching for a CLIFF BURTON TONE!!!!

By Tom Lasley

from St. Louis

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

Overall? I'd be NOWHERE without this baby! This pedal is the key to my bass tone. Any metal fans out there looking to add some beef to their town, This is for You, with out a doubt. Electro-Harmonix, I salute You!
This thing is built like a tank! I'm not the most graceful of musicians, this pedal has taken a spill once or twice. Not a thing wrong with it. This pedal is durable and can take a beating. As far as sound quality goes; I couldn't be more in love. The sound You get out of a pedal like this, it's amazing! My main influence to playing bass. His tone is large and loud. This pedal will cover that job completely. Perfect for anything from Kill 'em All and Ride the Lightning. Most definitely the best pedal I've ever owned.
For Your money, You're not going to find a better fuzz pedal than this. The Bass Big Muff kicks the daylight out of any other fuzz for bass. Big Muff is the king! You get what You pay for, No doubt about that. If You're considering this pedal, don't hesitate! You'll fall head over heels for it.

(1 of 1 customers found this review helpful)

 
5.0

In Soviet Russia Pedal Owns YOU!

By Stiltworks

from Charlotte North Carolina

See all my reviews

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

I bought this unit after testing it out at the music venue I work in, and fell in love.You get three settings: Bass Boost, Normal, and Dry.My only hitch with the pedal is the toggle switch for the settings as opposed to a footswitch selector.On normal this pedal is the same as the final run of the black russian Big Muffs. Trust me, I have both pedals on my board now, the only difference I have noticed is the "Bass Muff" has abit more gain. Bass boost is the same tone, just beefed up to fully round out the sound, which is how I run it. Dry is the most useful setting, allowing you dial in the amount of fuzz over your clean tone to really make it sing.I run bass boost out of both dry and effect out to my amps dual inputs to mix my signal, and I love. Side by side with the soviet muff this thing will skin you alive. On it's own it will put any rhythm guitarist to shame with it's wall of sound. I have owned three big muffs now, two russians and now the bass muff. For under a hundred dollars you should own this pedal or at least give it a fair shot.

 
1.0

THIS IS NOT THE DELUXE MODEL

By Ray

from Wichita KS

About Me Professional Musician

Verified Buyer

Pros

    Cons

      Best Uses

      • Performances
      • Professional Recording

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

      This image is wrong! If you think you are going to get a good deal on the big muf Pi Deluxe you'll be disappointed because ordering this will get you the regular big muf pi.

       
      5.0

      Great Pedal

      By Stormtrooper53

      from Baton Rouge

      About Me Experienced

      See all my reviews

      Verified Reviewer

      Pros

      • Excellent Sound Quality
      • Versatile

      Cons

        Best Uses

        • Amateur Recording
        • Events
        • Home Studio
        • Performances
        • Professional Recording

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

        I've been playing with a Russian Big M*ff for about 20 years and it finally gave out on me. Not the pedal itself, but the LED indicator which tells me if it's on or not so I figured it was time for an upgrade. Man, am I glad I did. Big M*ff pedals are the best distortion/fuzz pedals out there for bass as far as I'm concerned, but I am so blown away by how this pedal handles my 5-string. On my old M*ff, the low B string sounded muddy. It just couldn't handle anything lower than the E string. On this one, you can even get some punch and clarity on that low B. Not only that, it works great as a pedal for guitar. ESPECIALLY if, like me, you play a lot of stuff in C-Standard. You can get some nice fuzzy Fu Manch-type tones. If you switch on the Bass Boost and crank the Tone and Sustain nobs to 11, you can even get that bass-heavy crunch Kyuss was renowned for. If you want a distortion pedal than can handle your five string, if you want a great distortion or fuzz pedal, this little green hulk can handle all of that and then some. NOTE: I had to edit the word M*ff in this review because the word is flagged by MF's profanity filter. Go figure.

         
        5.0

        Great Stoner Doom/Vintage Tone

        By Jake the Fuzz Guy

        from Arab, Alabama

        About Me Novice

        Verified Buyer

        Pros

        • Compact Design
        • Excellent Sound Quality
        • Responsive
        • Versatile

        Cons

        • Limited Selection Of Effects

        Best Uses

        • Amateur Recording
        • Events
        • Home Studio
        • Performances
        • Professional Recording

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

        As someone who plays alot of psych rock, stoner rock and doom metal, I must say this pedal is the perfect tone for this type of music. Its abrasive and fuzzy (but a nice clean fuzz.) It also works pretty well on guitar, but this is a pedal made for bass, and its purpose as a bass pedal is what it best serves as.

        (0 of 1 customers found this review helpful)

         
        3.0

        Almost, but not quite

        By NicFX

        from Colorful Colorado

        About Me Experienced

        See all my reviews

        Verified Reviewer

        Pros

        • Excellent Sound Quality

        Cons

          Best Uses

          • Amateur Recording
          • Home Studio
          • Performances

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

          I used to have one of those early 90s army green sovtek muffs that I absolutely loved. Hands down it was my favorite pedal. Unfortunately it was stolen. I bought this pedal to replace it since everyone seems to say that it is the closest thing going. I think this pedal sounds really good but it just is not quite as smooth and creamy as those old russian muffs. I like the little bass boost switch and both tones are very useable but if you really want that super fluffy, marshmallowy, siamese dream-esque distortion you might just have to go find an old one. I have also found that it sounds completely different depending on what amp you have it plugged into. Not just a little different but almost like it is not even the same pedal. This is to be expected of course but I was really suprised at just how much the tone varied. Into my fender twin it really does not sound that good and I like my mini fuzz face 10x more. Into the effects loop of my orange rockerverb 100 it really comes alive and has a great tone. It also sounds pretty good in the loop of my mesa express5/50 combo but if you are planning to pair this up with a fender you might be sorely disappointed.

           
          5.0

          Great Fuzz pedal, and that's all you get

          By Tanner McCoon

          from Walla Walla, Washington

          About Me Experienced

          Verified Buyer

          Pros

          • Compact Design
          • Excellent Sound Quality
          • Responsive

          Cons

          • Limited Selection Of Effects

          Best Uses

          • Events
          • Performances

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

          Ordered this amazing fuzz pedal on a Monday and got it by Thursday with free shipping which made my day! Pulled her out of the box and used her with the 9-volt that came with it. The sound is exactly what i was looking for! I was hoping for a great fuzz pedal that would help my tone punch through the mix in my bands well and that's exactly what i got! The one thing i'm most thankful for is this pedal seems to really smooth out my tone and add the sustain my cheap bass is missing. I always keep her switched to "Dry". "Bass Boost" gets too muddy and "normal" looses all the bottom end, though there is an effects and dry output so if you were to use both, I suppose normal would be a good decision. In conclusion, it's a great fuzz pedal that probably isn't an end-all for bass players that want a real heavy distortion. Overall, great pedal at what it says it does!

           
          5.0

          great buy!

          By Steve

          from High Point, NC

          About Me Experienced

          See all my reviews

          Pros

          • Excellent Sound Quality
          • Responsive
          • Versatile

          Cons

            Best Uses

            • Performances
            • Professional Recording

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

            great product. Easy to use. Sounds great!

             
            4.0

            Great Pedal

            By Noah

            from Mooresville, NC

            About Me Experienced

            See all my reviews

            Ask me a question

            Pros

            • Compact Design
            • Excellent Sound Quality
            • Responsive
            • Versatile

            Cons

              Best Uses

              • Performances
              • Professional Recording

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

              I've used this pedal for a few months now. I used it all through marching band, in my own band, and at church. I like a very clean vintage sound, but sometimes you just need a little punch to get that punky feeling. Whether you're going for full on distortion, or just a little punch, this is for you. I love it. Just to give my bass (Fender Jazz) a little more edge, this pedal did it for me. Love it!!

               
              4.0

              first bass distortion pedal

              By thunderbird guy

              from Plymouth, MA

              About Me Experienced

              See all my reviews

              Pros

              • Compact Design
              • Good Selection Of Effects
              • Responsive
              • Versatile

              Cons

                Best Uses

                • Amateur Recording
                • Events
                • Performances

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

                This is my first bass distortion pedal and I'm running it through a fender rumble 100 amp with 2, 10" speakers and an epiphone thunderbird IV bass.

                Overall it seems to do everything you would expect from a good bass distortion, you can adjust the volume of the effect, the level of distortion, and the overall tone of the pedal using three circular knobs. On top of this there is a little switch that has three settings: down is "dry", which splits your signal so you can hear the clean bass as well as the distorted bass (this sounds really sick!), middle is normal which is just the distorted signal, and the top setting is "bass boost" which is the distorted signal but with a noticeable increase in the bottom end. Between all of these settings you can really dial in any kind of bass distortion you want, from a slight fuzz all the way to a crazy, crunchy, gnarly tone. The only reason I gave it 4 stars is that on some settings it just sounds a little too much for my taste but then again I don't really play alot of music that uses a TON of bass distortion, I mainly use either the "dry" or "bass boost" settings with the distortion knob around 9 oclock and it adds a really nice fuzz. The construction is rock solid from what I can tell and it takes a standard wall adapter. Overall, I am happy with my purchase and though I have never tried any other bass distortion pedals, this one does the trick for me, once I figured out how to dial it in the right way. Also mess with the EQ on your amp while your messing with the pedals settings, as this will really effect how the distortion sounds with your tone.

                (0 of 1 customers found this review helpful)

                 
                5.0

                this thing is sick

                Pros

                • Excellent Sound Quality
                • METAL
                • Punk
                • Responsive
                • Rock
                • Simple
                • Versatile

                Cons

                  Best Uses

                  • Amateur Recording
                  • Events
                  • Home Studio
                  • Performances

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

                  I ordered this thing and im really pleased, I play all the rock, metal, newer punk stuff and i can get the sound I want, and it doesnt take up alot of space and its simple so thats always great to. I recomend this pedal

                   
                  5.0

                  EXCELLENT PEDAL.

                  By DylanLarsen

                  from Springville, UT

                  About Me Professional Musician

                  See all my reviews

                  Pros

                  • Excellent Sound Quality
                  • Good Selection Of Effects
                  • Responsive
                  • Versatile

                  Cons

                    Best Uses

                    • Home Studio
                    • Performances

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

                    I think this is a fantastic little gadget. It gives me that thick distortion cloud I've been searching for. Very adjustable and rugged. Works awesome with both bass guitar and electric guitar. :D I highly recommend this.

                     
                    5.0

                    I recommend to other bass players this p

                    By Tito bass

                    from Orlando.Fl

                    About Me Professional Musician

                    See all my reviews

                    Ask me a question

                    Verified Buyer

                    Pros

                    • Compact Design
                    • Excellent Sound Quality
                    • Responsive

                    Cons

                      Best Uses

                      • Performances

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

                      Great pedal for bass players

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