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Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal 

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The Electro-Harmonix Metal Muff with Top Boost features 3 powerful EQ bands that are ideal for sculpting mids and a total of 6 controls for shaping s...Click To Read More About This Product

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OVERVIEW

The pit bull of distortion boxes.

The Electro-Harmonix Metal Muff with Top Boost features 3 powerful EQ bands that are ideal for sculpting mids and a total of 6 controls for shaping sound precisely your way. Top Boost adds serious bite with its own control knob and footswitch button.

FEATURES
  • Volume, Top Boost, Treble, Mid, Bass, and Distortion knobs
SPECIFICATIONS

XO Metal Muff with Top Boost Distortion Guitar Effects Pedal

  • DISTORTION CONTROL ” adjusts the amount of input gain.
    The optional 9V power supply from Electro-Harmonix is US96DC-200BI 9.6 volts/DC 200ma. The barrel connector on the front of the METAL MUFF is for the 9-volt battery eliminator capable of delivering 100 mA of current. The inner ring of the 9-volt battery eliminator must be negative, the outer ring positive.
Reviews
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Review Snapshot

by PowerReviews
Electro-HarmonixXO Metal Muff with Top Boost Distortion Guitar Effects Pedal
 
4.8

(based on 172 reviews)

Ratings Distribution

  • 5 Stars

     

    (146)

  • 4 Stars

     

    (17)

  • 3 Stars

     

    (4)

  • 2 Stars

     

    (3)

  • 1 Stars

     

    (2)

100%

of respondents would recommend this to a friend.

Pros

  • Excellent sound quality (6)
  • Responsive (5)
  • Versatile (3)

Cons

No Cons

Best Uses

  • Home studio (3)
  • Performances (3)
    • Reviewer Profile:
    • Experienced (8)

Most Liked Positive Review

 

Great distortion pedal

If you are looking for a good distortion pedal from rock to full on gain metal, this pedal is great. Having this pedal helps me easily dial in my tone when using different guitars...Read complete review

If you are looking for a good distortion pedal from rock to full on gain metal, this pedal is great. Having this pedal helps me easily dial in my tone when using different guitars on different amps. I often play gigs using other people's amps, so I never know exactly what type of amp might be there. This pedal gives me some control over my sound, especially if the amp on hand is not one that has a good gain channel. For the price, it has been well worth it, and I this pedal had been out before the other distortion pedals I experimented with.
I went through a good amount of distortion pedals, but this one is my go to one in terms of sound, tone, and versatility. Although a pure tube amp overdrive is my favorite, this pedal is great if you are gigging, and using whatever amp might be there. You can dial in all sorts of tone from scooped out metal, to a more classic rock tone by dialing back the gain. The boost switch is great too if you want to really cut through the mix and be heard.
Solid metal case, and switches. I've used it on plenty of gigs, over at least 4 years now, and never had a problem. I usually use a power supply cable, so the batteries don't drain out.
For the price, it is well worth it. I've had mine for years, and I haven't had to buy another pedal. Although I like using my tube amp's distortion, this pedal can still get a great tone when distorting the clean channel on the amp.

VS

Most Liked Negative Review

 

A Wonderful Doorstop

The distortion offered by the Metal Muff is pathetic. Even a Boss DS-1 distortion pedal will sound just as good if not better, and to me a DS-1 sounds terrible. Why...Read complete review

The distortion offered by the Metal Muff is pathetic. Even a Boss DS-1 distortion pedal will sound just as good if not better, and to me a DS-1 sounds terrible. Why have I come to this conclusion? Well I've played two different Metal Muffs, one of which was my own, in the past months on a Peavey ValveKing 112 Tube Amp. Which sounded alright. Although not much better than the amp's built-in distortion. Another amp I played on was a Randall Half-Stack Solid State Amp where it sounded downright terrible. The few times this pedal sounded good were on a few cheap 10-15 watt starter pack amps because the amps sounded so bad anything would have improved their sound quality. The positive of the Metal Muff was when playing higher pitched metal (Trivium, Black Label Society) because it allows some guitars to easily pour out pinch harmonics. On the other hand heavier, deeper sounding metal was nearly impossible. Even after hours of tweaking the amps, and pedal knobs I still couldn't get a good tone from the Muff. The Metal Muff always sounded too high pitched, and didn't have that heavier tone I was looking for. It was either an opera, or distorted mudfest. Another caveat was that my Metal Muff broke within a week of light use, and the other I used was cracked after it was dropped during band practice (after I had reviewed it). Something else I should mention is that I used an Epiphone SG, Dean ML, Gibson Explorer, Fender Mexican Strat, Ibanez RG, and ESP KH-2 -each guitar had a different set of pick ups, and strings (ex. Seymour Duncan Blackouts Metal, Gibson 500T, Seymour Duncan SH-6) while reviewing the Metal Muff. In all the Metal Muff has a lot of nice features, you get decent control over your sound, and the Top Boost was definitely a plus; but terrible tone, poor construction, and bad distortion make this an overpriced doorstop. Were it better constructed, and better priced this would be your average distortion pedal. But because it isn't I give it a 2/5.

Reviewed by 172 customers

Displaying reviews 1-10

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5.0

Great Sounding Pedal

By Surf Geeser

from Huntington Beach, CA

About Me Experienced

See all my reviews

Verified Buyer

Pros

  • Excellent Sound Quality

Cons

    Best Uses

      Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

      I have owned a number of other metal petals in the past, but I think this is the best sounding pedal of them all. It takes a little bit of experimentation with the tone settings on your amp and the pedal, but you can get a good rip saw effect. On my set up I had to turn the base tone control to 0 to get a clean rip saw sound with a lot of presence. One thing I really like about all of the EHX pedals I have owned is that the distortion gets applied evenly to all of your guitar strings. You don't have a case where there is adequate distortion on the wound strings, but the first and second string sound undistorted. Also, on other pedals I have owned the distortion starts to really die off when you start playing on the 17th fret on the first or second string.

       
      5.0

      The best metal pedal period.

      By Sparks009

      from Ohio

      About Me Experienced

      See all my reviews

      Pros

      • Excellent Sound Quality
      • heavy
      • Responsive
      • tweakability

      Cons

      • a little fuzzy

      Best Uses

      • anything

      Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

      its the best Metal Pedal on the market....its that simple....very tweakable and heavy...it does have a bit of fuzz to it but you should expect that.

       
      5.0

      Excellent distortion pedal

      By Alexxx2582

      from Ajman, UAE

      About Me Experienced

      Verified Buyer

      Pros

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

      Cons

        Best Uses

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

        Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

        It's a really great pedal with a perfect sound, very compactable and very simple for use. It's nice to play the riffs from simple rock to speed metal and perform a really crazy solos!!! Enjoyable item!!!

        (1 of 1 customers found this review helpful)

         
        5.0

        Not just for metal

        By wjmaynard27

        from Broken Arrow, OK

        About Me Experienced

        Verified Buyer

        Pros

        • Excellent Sound Quality
        • Responsive
        • Solid Build
        • Versatile

        Cons

        • Dialing In Time

        Best Uses

        • Events
        • Home Studio
        • Performances

        Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

        I bought this pedal wanting to get back into the metal scene. I've placed it on my board in front of a Fender hot rod delux 3. I am currently in a Funk, classic rock, and alternative metal band. I purchased this pedal for the metal band, but have found it quit usefull in all of my projects. The tone is amazing out of this pedal. The controls are very responsive. So please take your time setting it up. The array of distortion/overdrive is endless in this stomp box. This is not a one trick pony. Please keep in mind that it does take a minute to set up. With that being said, if you are not a patient person, this pedal may not be for you. I will recomend this to any of my friends.

         
        4.0

        good if dialed in properly

        By Chaplin

        from My house

        About Me Experienced

        See all my reviews

        Ask me a question

        Pros

        • Sounds Great Dialed In
        • Well Built

        Cons

        • Has Many Bad Settings
        • Too Big For What It Is
        • Top Boost Is A Joke

        Best Uses

        • Amateur Recording
        • Home Studio

        Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

        There are many bad settings on this but the good is great imo. run it through vox ac15 w/celestion blue and the blue takes the gain surprisingly well (it's not intended for that style of sound). built well. on the bad there are many bad settings on this. for my setup i like to go bass 12 c'clock, treble 9, mid 12. this also sounds good with single coil bridge pickup although my true humbuckers sound best with palm muting. definitely better than metal zone and for metal, better than my crunch box. top boost is so shrill and nasty sounding. perhaps with a full band through a pa it won't be as annoying but i seriously doubt it. wish the pedal didn't have to be so fat all due to a feature i have no interest in (top boost)

        (1 of 1 customers found this review helpful)

         
        5.0

        A Keeper!!

        By wasabifiend

        from Minneapolis, MN

        About Me Experienced

        Pros

        • Excellent Sound Quality
        • Good Selection Of Effects
        • Responsive
        • Sounds great
        • Versatile Great Tones

        Cons

        • None

        Best Uses

        • Performances
        • Professional Recording

        Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

        I've had a lot of amps and pedals. I was doubtful before I bought it, got it on recommendation of a sound guy who also plays guitar. This pedal has a great selection of modern metal tones and can also do vintage tones well. It's my fav for Dimebag Darryl tones and the like.

        (3 of 4 customers found this review helpful)

         
        5.0

        Great Metal Pedal

        By ESP Player

        from Round Rock, TX

        About Me Experienced

        See all my reviews

        Pros

        • Excellent Sound Quality
        • Responsive
        • Versatile

        Cons

          Best Uses

            Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

            Great pedal for Metal music. I bought a NS-2 to suppress some of the noise. But I think that is to be expected from a High Gain pedal. No big deal. I like this better than the Boss MT2.

            Unless you are a shredder, the top boost won't see much use.

            EMG Pickups: I have seen some reviews that say this pedal does not work with EMGs. I am not sure what that is about...I have EMG active pickups and this pedal sounds fine with them.

            (5 of 5 customers found this review helpful)

             
            5.0

            Best I have ever owned

            By Somedude

            from U.S.A

            About Me Experienced

            See all my reviews

            Ask me a question

            Verified Buyer

            Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

            Run this threw a clean tube amp and you will have some of the best distortion that has ever been made in a pedal. Great analog distortion that does not give you the fizzy, fuzzy, buzzy, bees in a can tone that you can't dial out of the competitors. Don't get me wrong, you can get the fizziness if you dime out the gain but it is controllable and can be dialed out.

            The Top Boost feature is a nice tool for giving you some extra bite for a solo but in my experience anything past 10-11 o'clock is almost unusable(loses articulation and gets muddled up really quick).

            As a side note, forget everything you know about the settings of your amp when you plug this in. The EQ on this is quite active and will take a bit of time to find your tone. Also, this does need a noise gate of some kind in the loop(as do most).

            I highly recommend the MM XO to anyone looking for a distortion pedal.

            (10 of 10 customers found this review helpful)

             
            5.0

            Great distortion pedal

            By Jameson Froom

            from Hawaii

            Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

            If you are looking for a good distortion pedal from rock to full on gain metal, this pedal is great. Having this pedal helps me easily dial in my tone when using different guitars on different amps. I often play gigs using other people's amps, so I never know exactly what type of amp might be there. This pedal gives me some control over my sound, especially if the amp on hand is not one that has a good gain channel. For the price, it has been well worth it, and I this pedal had been out before the other distortion pedals I experimented with.
            I went through a good amount of distortion pedals, but this one is my go to one in terms of sound, tone, and versatility. Although a pure tube amp overdrive is my favorite, this pedal is great if you are gigging, and using whatever amp might be there. You can dial in all sorts of tone from scooped out metal, to a more classic rock tone by dialing back the gain. The boost switch is great too if you want to really cut through the mix and be heard.
            Solid metal case, and switches. I've used it on plenty of gigs, over at least 4 years now, and never had a problem. I usually use a power supply cable, so the batteries don't drain out.
            For the price, it is well worth it. I've had mine for years, and I haven't had to buy another pedal. Although I like using my tube amp's distortion, this pedal can still get a great tone when distorting the clean channel on the amp.

            (5 of 6 customers found this review helpful)

             
            5.0

            Wow

            By Drew

            from Pennsylvania

            See all my reviews

            Ask me a question

            Comments about Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal:

            I can't believe I spent so much money on other distortion pedals over the years. This one takes the cake for metal. Everything from 80's metal, thrash, rock, to modern "Nu Metal" tones. I'm in awe. If you're looking for a real metal pedal, that saturates, don't hesitate, get it, you won't be disappointed if that's what you're looking for.
            Active EQ abilities, overwhelming and impressive gain and volume control that fits the bill.
            Top notch
            A steal

            Displaying reviews 1-10

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