Electro Harmonix Slammi Polyphonic Pitch-Shifter/Harmony Pedal

Review of: Electro Harmonix Slammi

Reviewed by: Rating:4On October 23, 2013Last modified:October 6, 2016



Electro Harmonix just announced the all-new Whammy-killer… the Slammi!

This insane foot-controlled polyphonic pitch-shifter/harmony pedal features a powerful new pitch-shifting algorithm for insanely fast tracking and glitch-free operation. The Slammi also promises tremendous improvements in your tone.

With three-octave polyphonic dive bombs, smooth pitch shifting, and fixed interval harmonizing and bends, the Slammi looks like the latest toy for all you Whammy addicts. If you’re familiar with the unmatched accuracy of tracking in other Electro Harmonix guitar pedals such as the POG 2 Polyphonic Octave Generator, Pitch Fork, and HOG2, you already know that this is big news.

Here’s the first demo from Electro Harmonix:

From EHX:

The pedal combines a powerful new algorithm with EHX’s revolutionary Next Step Effects platform to deliver superior tone, glitch free operation and precision control.

The Slammi’s MAX BEND control functions as an 11-position switch. It allows the player to set the pedal’s maximum bend/interval to Detune for a lush chorus effect as well as ½ Step, Major 2nd, Major 3rd, Perfect 4th, Perfect 5th, Major 6th, Minor 7th, 1 Octave, 2 Octaves and 3 Octaves.

Bends can move up or down in relation to the original pitch, selectable with the pedal’s Bend button. Maximum bend can be achieved in either the toe-down or heel-down position, allowing the player to customize the pedal’s response to their playing preference. The Slammi’s controls also include a thumb wheel for Dry Volume which blends in the instrument’s dry signal.

EHX’s Next Step Effects series benefit from a design with no moving parts to wear out or break plus lightning-fast response, high sensitivity and silent bypassing with no clunky button to engage.

The new Slammi Polyphonic Pitch-Shifter/Harmony Pedal is housed in a rugged die-cast chassis and comes equipped with a 9-volt battery. It can also be powered by an optional standard 9.6-Volt/DC200mA AC adapter and carries a U.S. list price of $191.66.

Visit Electro Harmonix for more info about the Slammi and other pedals.


Gabriel Tanaka


  1. SuperNaut

    November 1, 2013 at 8:51 pm

    Not true bypass?


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