Pricing and availability

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Sweetwater
3.5 (3)
$192.30
Amazon
4.8 (6)
$192.30
Reverb
4.0 (12)
$99.99 New
$63.99 Used
Musician's Friend
3.0 (1)
$192.30
zZounds
5.0 (1)
$192.30
Thomann
3.6 (5)
$126.00 $125.00 $1.00 · All time low

Average Price: $164

Standard/Professional

$100

$301+

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High-end

Price History

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 Manual

Product 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

What type of power supply does the Electro-Harmonix Slammi Plus require?

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.

Can the Electro-Harmonix Slammi Plus be used with both guitar and bass?

Yes, the Electro-Harmonix Slammi Plus is fully polyphonic, making it suitable for both guitar and bass instruments.

What are the pitch shifting capabilities of the Electro-Harmonix Slammi Plus?

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.

How does the X-Fade function work on the Electro-Harmonix Slammi Plus?

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.

Does the Electro-Harmonix Slammi Plus have a blend control for mixing dry and wet signals?

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.

EHX

EHX

Electro-Harmonix Slammi Plus Polyphonic Pitch Shifter / Harmony Pedal

Video thumbnail for Electro-Harmonix Slammi Plus Polyphonic Pitch Shifter / Harmony Pedal by EHX

Electro-Harmonix Slammi Plus Polyphonic Pitch Shifter / Harmony Pedal

EHX

EHX

Video thumbnail for Jhs Sweet Tea - Fuzz Probe Zvex - EHX Slammi Plus by Erick Horna

Jhs Sweet Tea - Fuzz Probe Zvex - EHX Slammi Plus

Erick Horna

Erick Horna

Reviews

PROS

  • Superior to Digitech Whammy with no glitches and better pricing

  • Versatile and inspiring pitch-shifting capabilities

  • Polyphonic harmonizer offers numerous switchable possibilities

  • Compact size, fitting easily on pedalboards

  • Excellent blend control for versatility in sound

  • Can replace traditional Whammy pedals with more control

  • Tracks well even with low tunings and heavy strings

  • Offers a wide range of intervals for creative expression

CONS

  • Cheap plastic construction raises durability concerns

  • Some units experienced issues like noisy operation or non-functional knobs

  • Compact design makes adjusting controls difficult

  • Relies on plastic "teeth" under the toe, prone to breaking

  • 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

  • The Slammi Plus offers flexible pitch-shift interval settings at the heel position, potentially allowing for closer-to-true bypass use.

    Source
  • 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.

    Source

Build quality

  • 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.

    Source
  • 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.

    Source

User experience

  • The original Slammi model's rocking motion was found awkward by some users, though the Plus model's Wah-like build may improve stability.

    Source

Comparisons

  • 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.

    Source
  • Unlike the Whammy, the Slammi Plus integrates the expression pedal directly into the unit, similar to a Pitchfork with built-in expression capabilities.

    Source

Use cases and applications

  • 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.

    Source

Software and compatibility

  • The Slammi Plus lacks MIDI control, which some users find limiting compared to devices like the Whammy that can be sequenced via MIDI.

    Source

Value and pricing

  • The Slammi Plus is priced at approximately $168, which some users consider slightly high given its plastic construction.

    Source

Critic Reviews

A Whammy killer? Electro-Harmonix outs Slammi Plus pitch shift/harmony pedal - gearnews.com

gearnews.com

The Electro-Harmonix Slammi Plus is a versatile polyphonic pitch-shift/harmony pedal that impresses with its 11-position switch for various transposition intervals. It's a budget-friendly alternative to the Digitech Whammy series, offering useful effects for chord and dual-note runs. The X-Fade function allows seamless blending between dry and pitch-shifted tones. Its ability to run on a regular 9-volt power supply or battery adds to its versatility. While not explicitly stated, the review implies a positive sentiment towards its sound and functionality, making it a strong contender for musicians seeking quality pitch effects without breaking the bank.

positive

4.0 out of 5

Based on 0 Reviews and 1 Rating

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Artist usage

Add artist
See how John Helps uses Electro-Harmonix Slammi Plus

John Helps

Guitarist

Maybeshewill

...
Verified via Photo

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

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