Electro-Harmonix Slammi review

Pitch-shifting powerhouse

  • £117
  • €167
  • $191
The Slammi joins EHX's unique Next Step range of expression pedals without moving parts

MusicRadar Verdict

An acquired taste perhaps, but a commendable alternative pitch shifter.


  • +

    Speedy tracking. Flexible. Decent tones.


  • -

    Hard to achieve smooth transitions.

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As well as a motion sensor, the Electro-Harmonix Slammi boasts three octaves of pitch shifting, plus four controls, either side of the pedal: dry volume, for blending shifted and dry signals; max bend, for setting the interval; a bend up/down button, and calibrate button for the sensor.

"The Sammi offers speedy polyphonic tracking and convincing tones"

That means more flexibility than the Slammi's rhyme-sake, and the sounds are on a par, with speedy polyphonic tracking and convincing tones.

Accessing the controls is pretty fiddly, though, and we found the sensor too sensitive; it picks up every slight foot wobble, so it's hard to get a smooth pitch bend. An acquired taste perhaps, but a commendable alternative pitch shifter.

Michael Brown

Mike is Editor-in-Chief of GuitarWorld.com, in addition to being an offset fiend and recovering pedal addict. He has a master's degree in journalism, and has spent the past decade writing and editing for guitar publications including MusicRadar, Total Guitar and Guitarist, as well as a decade-and-a-half performing in bands of variable genre (and quality). In his free time, you'll find him making progressive instrumental rock under the nom de plume Maebe.