Electro Harmonix Slammi Plus Polyphonic Pitch Shifter/Harmony Pedal

£49.99

The Electro Harmonix Slammi Plus is a fully polyphonic pitch shifter and harmony pedal that delivers everything from subtle detune and lush chorusing through to extreme whammy dives, octave jumps and complex dual harmonies. With up, down and dual shift modes, an X-Fade function and a huge plus/minus three octave range, it gives you studio-grade […]


Description

The Electro Harmonix Slammi Plus is a fully polyphonic pitch shifter and harmony pedal that delivers everything from subtle detune and lush chorusing through to extreme whammy dives, octave jumps and complex dual harmonies. With up, down and dual shift modes, an X-Fade function and a huge plus/minus three octave range, it gives you studio-grade pitch manipulation in a compact, rugged treadle pedal.
Whether you want to replace a traditional whammy pedal, add fixed interval harmonies to riffs, or morph seamlessly between dry and shifted tones, the Slammi Plus makes it easy. Its digital engine tracks cleanly and glitch free, while the intuitive controls let you dial in anything from musical, expressive bends to wild, experimental sound design.

Polyphonic Pitch Power
The Slammi Plus is fully polyphonic all the time, so it tracks chords, double stops and complex voicings without glitching or warbling. That means you can use it for harmonised riffs, chordal whammy sweeps and ambient pads without having to change your playing style or simplify your parts.

Huge Plus/Minus Three Octave Range
With a transposition range of plus or minus three octaves, the Slammi Plus covers everything from subtle pitch nudges to extreme dive bombs and sky high squeals. You can shift up, down or both simultaneously, opening up creative options for bass-style drops, organ-like octave stacks or synthy, alien pitch sweeps.

Dual Pitch and X-Fade Modes
The Dual setting lets the Slammi Plus generate two independent pitch shifted signals at once. In Pitch mode, both intervals bend together for thick, harmonised whammy effects. Switch to X-Fade mode and the secondary interval becomes fixed, while the treadle cross-fades between dry and shifted tones or between two different shifted intervals, perfect for smooth transitions and evolving textures.

Detune and Fine Blend Control
The 11-position Shift switch includes a D (Detune) setting that shifts by 17 cents for instant chorus and doubling effects without modulation noise. A dedicated Blend control lets you fine tune the balance between dry and wet signals, so you can sit harmonies exactly where you want them in the mix, from barely-there thickening to fully effected pitch sweeps.

Key Features
Fully Polyphonic Pitch Shifting – The Slammi Plus tracks chords and single notes with equal ease, delivering clean, glitch free pitch shifting that works for complex voicings, fast runs and sustained ambient parts.
Plus/Minus Three Octave Range – A massive transposition range of up to three octaves up or down lets you create subtle detune, classic octave effects, radical dive bombs and experimental pitch textures from a single pedal.
Dual and X-Fade Modes – Generate two separate pitch intervals at once and either bend them together or use the treadle to cross-fade between dry and shifted sounds or between two different shifted intervals for smooth, musical transitions.
Rugged, Lightweight Treadle Design – Housed in a tough, weight saving chassis with a traditional rack and pinion mechanism, the Slammi Plus feels familiar underfoot and is built to handle regular gigging while keeping your board light.
SpecificationsGeneral

Product: Electro Harmonix Slammi Plus Polyphonic Pitch Shifter/Harmony Pedal
Effect Type: Polyphonic pitch shifter and harmony pedal
Circuit: Digital
Bypass: Buffered bypass
Audio: Mono

Pitch Shifting

Transposition Range: Plus/minus 3 octaves
Shift Modes: Up, Down, Dual
Detune Mode: D (Detune) setting with 17 cent shift
Dual Mode: Two independent pitch shifted signals
X-Fade Function: Fixed interval with treadle cross-fade between signals
Blend Control: Adjustable wet/dry mix

Power

Power Options: 9V battery included
Optional Power Adapter: 9.6VDC 200mA (not included)
Current Draw: 25mA

Dimensions

Dimensions (inches): 9.92 x 4.25 x 3.0

Brand

Electro Harmonix

Electro-Harmonix (EHX) is a legendary manufacturer of guitar pedals and audio electronics, renowned for their distinctive sound and pioneering designs. Established in 1968 by Mike Matthews, EHX has played a significant role in shaping the landscape of effects pedals. The company’s pedals are celebrated for their innovative circuits and unique tones, earning them a dedicated following among musicians across genres. From classics like the Big Muff Pi fuzz to modern favorites like the POG octave generator, Electro-Harmonix pedals are known for their versatility and sonic character.

EHX’s product lineup spans a wide range of effects categories, including distortion, modulation, delay, and reverb, among others. Their pedals often feature intuitive controls and rugged construction, making them suitable for both stage and studio use. In addition to their iconic standalone pedals, Electro-Harmonix has also produced notable units such as the Memory Man delay/echo and the Holy Grail reverb, which have become staples in many guitarist’s rigs. With a legacy of innovation and a commitment to quality, Electro-Harmonix continues to be a leading force in the world of guitar effects, inspiring musicians to explore new sonic possibilities.

Category

Electro-Harmonix

Tags

Effects Pedals

Guitar Pedals

Your pedal is like a signature dish for your sound — a flavour-packed creation that transforms the bland ingredients of your guitar into something unforgettable. Each one adds its own seasoning, texture, and heat, turning a simple meal into a feast of tone.

These tasty little boxes sit in a row, like plates on a buffet, letting you mix and match flavours as you play. With one tap of your foot, you can swap sweet for spicy, subtle for smoky, and serve up something completely new. From the comfort food of warm overdrive to the fiery kick of fuzz, from smooth jazz sauce to heavy-metal spice, pedals give players a full menu of options to express their taste.  And just like with food, once you’ve tried one dish, you’ll want to sample them all.

Collecting, trading, and discovering new flavours soon becomes part of the joy of being a tone-loving gourmet geek with a guitar.

Pedal

Your pedal is like a signature dish for your sound — a flavour-packed creation that transforms the bland ingredients of your guitar into something unforgettable. Each one adds its own seasoning, texture, and heat, turning a simple meal into a feast of tone.

These tasty little boxes sit in a row, like plates on a buffet, letting you mix and match flavours as you play. With one tap of your foot, you can swap sweet for spicy, subtle for smoky, and serve up something completely new. From the comfort food of warm overdrive to the fiery kick of fuzz, from smooth jazz sauce to heavy-metal spice, pedals give players a full menu of options to express their taste.  And just like with food — once you’ve tried one dish, you’ll want to sample them all.

Collecting, trading, and discovering new flavours soon becomes part of the joy of being a tone-loving gourmet geek with a guitar.

pitch shifting