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MF MD HG01 Memorial Day Deals 05-20-18
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Electro-Harmonix Slammi Pitch Shifter/Harmony Effects Pedal

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J04018 000000000
Product Price $147.0
  • Free Shipping (48 Contiguous U.S. States)
Open Box$129.36

Slammi revolutionizes foot-controlled pitch shifting with a powerful new algorithm that yields tremendous improvements in tone. Three-octave polyphon...Click To Read More About This Product

Available 06-12-2018

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Don't Forget

Get total control over pitch shifting and so much more.

Slammi revolutionizes foot-controlled pitch shifting with a powerful new algorithm that yields tremendous improvements in tone. Three-octave polyphonic dive bombs, smooth as silk pitch shifting, drop tuning, fixed interval harmonies and bends plus much more. With the Slammi's precise control and glitch-free operation the only limit is your imagination.

  • Advanced new algorithm that sounds great and provides glitch-free tracking
  • Up to three-octave maximum bend
  • Create harmonies by mixing your dry signal with the effect
  • MAX BEND Control acts as an 11-way switch to set the maximum bend/interval. Choose Detune, ½ Step, Major 2nd, Major 3rd, Perfect 4th, Perfect 5th, Major 6th, Minor 7th, 1 Octaves, 2 Octaves or 3 Octaves/Dive Bomb
  • Precision control that lets you smoothly sweep your guitar's pitch up or down
  • Sweep direction can be reversed so maximum pitch bend is in the heel-down position
  • Super responsive design with no moving parts, nothing to wear out or break
  • Comes with 9 Volt battery, 9.6DC-200BI power supply optional

Pick yours up today!


Review Snapshot

by PowerReviews
Electro-HarmonixSlammi Pitch Shifter/Harmony Effects Pedal

(based on 3 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.


  • Excellent sound quality (3)
  • Responsive (3)


No Cons

Best Uses

No Best Uses

Reviewed by 3 customers

Displaying reviews 1-3

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(2 of 2 customers found this review helpful)


Expand your range!

By Juney

from Columbus

About Me Professional Musician

Verified Reviewer


  • Compact Design
  • Excellent Sound Quality
  • Responsive
  • Versatile


    Best Uses

    • Amateur Recording
    • Home Studio
    • Mobile DJ
    • Performances

    Comments about Electro-Harmonix Slammi Pitch Shifter/Harmony Effects Pedal:

    This is a pretty fun little toy. I bought one because I was interested in adding some unique sounds to my set up. This pedal allows you to alter the pitch of your guitar (or other electric instrument?) up or down several octaves, as well as many other intervals.

    I find I usually use it as an transposing pedal, that is to say not utilizing the 'wammy' effect. That isn't to say the wammy effect isn't any good. I think depending on the style of music you are playing, it would come in very handy. If you are playing a guitar with a fixed bridge, this will allow you to do some crazy dive bombs and that sort of thing. It is also fun to do 'reverse divebombs' in which the pitch soars up an octave or two. Along those lines, if you pair it with your delay pedal of choice, you can get a sound very similar to Tom Morello's solo on Like a Stone.

    As I mentioned though, it is very handy just for transposing. It can be used to turn your guitar into a bass! I was actually surprised at how good the sub-octave feature sounds. Add a distortion pedal here, and you are in for some real fun. If you have any friends who like to play in drop tunings, this is also a handy pedal, as it will let you drop (or raise) your tuning by smaller intervals like a whole step, third, fourth, etc.

    There are a few drawbacks, however. Sometimes if the pedal is sitting on an uneven surface such as carpet, it will be just a little out of tune, and things will sound weird. Also, if you plan to use this on a pedal board, you may need to purchase the optional rocker case for it. This pedal does not operate the way a wah pedal might. The upshot is that there are no moving parts, which is nice for maintenance, but if the pedal isn't level, it will think you are trying to do some sort of detuning or something.

    I have overall been very pleased with this pedal, and would recommend it to someone looking for a new way to add variety to their sound.

    (1 of 1 customers found this review helpful)


    Tracks great, even on bass.

    By Noah

    from Fort Collins, CO

    About Me Novice


    • Excellent Sound Quality
    • Responsive


    • Awkward Controls

    Best Uses

      Comments about Electro-Harmonix Slammi Pitch Shifter/Harmony Effects Pedal:

      I've had a great time playing with my slammi, pretty much since it arrived. I can get it to act like a passive sub-octave, which I love for my 4-string bass, especially with the dry blend control. Adjusting the dials is awkward, and the numbers on the effect are vague. I keep it set at 8 for octave for the most part. It's able to go up OR down, tracks polyphonically (entire chords!) and doesn't sound particularly digital.

      Buffered instead of true bypass does mean that certain purists might be wary, but I haven't found it to color my sound noticeably while off.


      The fix is in

      By MacMac

      from Paducah, KY

      About Me Experienced

      See all my reviews

      Verified Reviewer


      • Excellent Sound Quality
      • Responsive
      • Versatile


      • Crawls - walks - moves

      Best Uses

        Comments about Electro-Harmonix Slammi Pitch Shifter/Harmony Effects Pedal:

        Got my new Slammi today (from MF, of course) and everything about this pedal is beyond excellent ... except for one thing: Pedal travel. How to remedy the situation? After a few hours of mulling and monkeying with the pedal, I remembered I had some foam I had saved from an old worn out mattress. BINGO! The fix is in !!!

        I cut a rectangle about twice the size of the pedal to place on the floor beneath the pedal, and even though the padding is a bit too thick and soft, which causes the pedal to be a bit wobbly, it stopped the travel. So, next I'll find a piece of padding more appropriate for the job. My best guess at this point in the experiment is that a 1/4 to 3/8 inch thickness of high density foam will suffice. Now, the padding itself will tend to move a bit with a lot of pedal use, but nothing like the movement without the foam. This can be remedied with some hook and loop (Velcro) to secure it if needed.

        If any of you who reads this would care to, please leave comments/suggestions if you do your own experimenting with foam padding. If you find that it works for you, spread the word.

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