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Average Price: $164
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$301+
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Based on price data from 7 merchants for "Electro-Harmonix Slammi Plus". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Unleash your musical creativity with the Electro-Harmonix Slammi Plus, a dynamic and versatile guitar pedal that seamlessly combines a pitch shifter and expression pedal into one compact unit. Whether you're looking to transpose, detune, harmonize, or add interesting textures to your sound, the Slammi Plus has got you covered.
With its lightning-fast tracking and glitch-free performance, the Slammi Plus allows you to experiment with a ±3-octave range and offers an impressive array of pitch-shifting capabilities. Plus, with the unique X-Fade function, you can effortlessly blend between wet and dry tones, offering an expansive range of sonic possibilities.
From dive-bombing and octave jumps to subtle chorus and crossfade effects, the Slammi Plus is designed to inspire. It's not just a special effect - it's an essential tool that unlocks a world of creative potential, allowing you to transpose keys up or down without even touching a tuning peg.
Key Features:
- Compact, foot-controlled polyphonic pitch shifter suitable for guitar, bass, or synth
- Transpose/shift single notes or entire chords
- X-Fade function for seamless transitions between wet and dry sounds
- Dual mode for 11 unique interval combinations
- Detune function for subtle chorus effects (17 cents)
- ±3-octave range
- Intervals: m2 (minor), M2 (major), M3, P4, P5, M6, m7, 1 octave, 2 octaves, 3 octaves
- Runs on a 9-volt battery or standard 9-volt center-negative power supply (not included)
Owner's manual
Electro-Harmonix Slammi Plus User ManualProduct specs
| Pedal Type | Polyphonic Pitch Shifter |
| Inputs | 1 x 1/4" |
| Outputs | 1 x 1/4" |
| Bypass Switching | Buffered |
| Power Source | 9V DC power supply required (sold separately) |
| Power Usage | 24mA (50mA supply recommended) |
| Batteries | 1 x 9V |
| Height | 2.9" |
| Width | 3.38" |
| Depth | 9.9" |
FAQs
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What type of power supply does the Electro-Harmonix Slammi Plus require?
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The Electro-Harmonix Slammi Plus requires a 9V DC power supply, consuming 24mA, though a 50mA supply is recommended. It can also run on a 9V battery.
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Can the Electro-Harmonix Slammi Plus be used with both guitar and bass?
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Yes, the Electro-Harmonix Slammi Plus is fully polyphonic, making it suitable for both guitar and bass instruments.
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What are the pitch shifting capabilities of the Electro-Harmonix Slammi Plus?
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The Slammi Plus offers glitch-free transposing over a +/- three octave range with three shift modes: up, down, and dual. It can generate two separate pitch shift intervals simultaneously in dual mode.
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How does the X-Fade function work on the Electro-Harmonix Slammi Plus?
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The X-Fade function allows the foot pedal to cross-fade between your dry note and pitch-shifted note, or between two pitch-shifted intervals, without bending the pitch shift interval.
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Does the Electro-Harmonix Slammi Plus have a blend control for mixing dry and wet signals?
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Yes, the Slammi Plus includes a blend control that lets you fine-tune the wet/dry mix, providing more flexibility in achieving your desired sound.
Videos
EHX
Electro-Harmonix Slammi Plus Polyphonic Pitch Shifter / Harmony Pedal
Reviews
PROS
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Superior to Digitech Whammy with no glitches and better pricing
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Versatile and inspiring pitch-shifting capabilities
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Polyphonic harmonizer offers numerous switchable possibilities
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Compact size, fitting easily on pedalboards
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Excellent blend control for versatility in sound
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Can replace traditional Whammy pedals with more control
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Tracks well even with low tunings and heavy strings
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Offers a wide range of intervals for creative expression
CONS
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Cheap plastic construction raises durability concerns
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Some units experienced issues like noisy operation or non-functional knobs
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Compact design makes adjusting controls difficult
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Relies on plastic "teeth" under the toe, prone to breaking
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Toggle switch may fail after extended use
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix Slammi Plus.
Features and functionality
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The Slammi Plus offers flexible pitch-shift interval settings at the heel position, potentially allowing for closer-to-true bypass use.
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The Slammi Plus includes a blend knob, allowing users to mix the dry and wet signals, which can add a low-end octave for enhancing riffs without fully affecting the signal.
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Build quality
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Concerns about the Slammi Plus' build quality have been raised, with suggestions that alternatives like the Pitch Fork paired with an expression pedal might be more durable.
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Despite perceptions of the Slammi Plus's plastic appearance, users report that EHX's expression enclosures, such as the Wailer Wah, are notably durable, supporting significant weight.
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User experience
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The original Slammi model's rocking motion was found awkward by some users, though the Plus model's Wah-like build may improve stability.
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Comparisons
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The Whammy Ricochet is noted for its compact size but lacks manual control, unlike the Whammy V and Slammi Plus which feature built-in expression pedals.
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Unlike the Whammy, the Slammi Plus integrates the expression pedal directly into the unit, similar to a Pitchfork with built-in expression capabilities.
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Use cases and applications
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The Whammy V is praised for its harmony modes, offering a range from octave down to octave up, appealing to those seeking versatile pitch effects.
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Software and compatibility
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The Slammi Plus lacks MIDI control, which some users find limiting compared to devices like the Whammy that can be sequenced via MIDI.
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Critic Reviews
4.0 out of 5
Based on 0 Reviews and 1 Rating
Artist usage
Add artist
Pictured and discussed in this February 8, 2023 Music Radar interview.
Electro-Harmonix Slammi Plus Polyphonic Pitch Shifter and Electro Harmonix Pitch Fork
[https://cdn.mos.cms.futurecdn.net/snhCGPc7ihH9ri2mPs5jJe-970-80.jpg.webp]
"These are pitch pedals. The Slammi is used in a couple of songs for whammy-type pitch effects, but not a great deal.
"The Pitch Fork I basically use as substitute for down-tuning the guitar for specific songs. I don't really like to change the tuning for the guitar – most of our stuff is in drop C# but there are a few songs where it needs to go lower so we use the Pitch Fork to get the guitar down an octave and make it all a bit heavier when it needs to be."
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Electro-Harmonix Slammi Plus, it is most commonly used with the following gear.
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