The Electro-Harmonix Worm is an Electro-Harmonix chorus pedal. Close alternatives include the Caroline Guitar Company Arigato and the Electro-Harmonix Mod Rex. It pairs well with the Soldano SLO 100 100-Watt Tube Guitar Amplifier and the Catalinbread Giygas.

Electro-Harmonix Worm

Electro-Harmonix · pedal

The Electro-Harmonix Worm is a multi-modulation pedal from Electro-Harmonix, delivering four distinct modulation and filter effects in one unit: Phaser, Vibrato, Wah, and Tremolo. A four-position Mode switch selects between the modulation types with Rate and Depth controls shared across all modes. The Worm provides four commonly used modulation effects in one compact EHX pedal format.

What stands out

  • “The Electro-Harmonix Worm is a multi-modulation pedal from Electro-Harmonix, delivering four distinct modulation and filter effects in one unit: Phaser, Vibrato, Wah, and Tremolo”

    — from the listing

  • “The Worm delivers four modulation effects (Phaser, Vibrato, Wah, Tremolo) in one EHX unit, suited for players who want multiple modulation options in a compact pedalboard pedal”

    — from the community notes

  • “In the signal chain modulation sits after drive and before reverb”

    — from the community notes

  • “A four-position Mode switch selects between the modulation types with Rate and Depth controls shared across all modes”

    — from the listing

  • “Mode switch enables live switching between the four modulation types”

    — from the reviews

  • wah
  • tremolo
  • vibrato
  • phaser
  • modulation
  • filter
  • auto wah
  • multiple modulation options

Genres the Electro-Harmonix Worm is commonly used in

  • Funk
    citedInferred from shared tonal signals, not a stated genre tag.
  • Experimental
    citedInferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Electro-Harmonix Worm

Soldano SLO 100 100-Watt Tube Guitar Amplifier

Soldano

10% match
$5499.99via Reverb

Soldano SLO 100 100-Watt Tube Guitar Amplifier's own high gain character is the real reason this is worth trying

Comes later in the signal chain

Pedals that stack with the Electro-Harmonix Worm

Catalinbread Giygas

Catalinbread

7% match
$185.26via Reverb

What Catalinbread Giygas brings here leans toward octave — that's worth building a pairing around

Comes earlier in the signal chain

Electro-Harmonix Big Muff Pi

Electro-Harmonix

7% match
$75.05via Reverb

Electro-Harmonix Big Muff Pi's own fuzzy character is the real reason this is worth trying

Comes earlier in the signal chain

Dunlop - MXR Carbon Copy Deluxe Analog Delay

Dunlop

6% match
$302.03via Reverb

Run Dunlop - MXR Carbon Copy Deluxe Analog Delay after Electro-Harmonix Worm in the signal chain, where it won't crowd Electro-Harmonix Worm — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Empress Echosystem

Empress

6% match
$494via Reverb

Run Empress Echosystem after Electro-Harmonix Worm in the signal chain, where it won't crowd Electro-Harmonix Worm — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Alternativessee all similar tone character →

Caroline Guitar Company Arigato

Caroline Guitar Company

68% similarity
$169via Reverb

Shared character: phaser, vibrato, filter

Electro-Harmonix Mod Rex

Electro-Harmonix

68% similarity
$169via Reverb

Shared character: vibrato, filter, tremolo

Henretta Engineering H-Bomb Trembrato

Henretta Engineering

59% similarity

Shared character: vibrato, tremolo, modulation

EarthQuaker Devices Grand Orbiter Phase Machine V2

EarthQuaker Devices

59% similarity
$199via Reverb

Shared character: phaser, vibrato, reverb

Behringer uv300

Behringer

58% similarity
$29.90via Reverb

Shared character: vibrato, modulation, reverb

NuX Mod Core Deluxe MKII Modulation Effektpedal

Nux

57% similarity
$99via Reverb

Shared character: phaser, vibrato, tremolo

Tone City Summer Orange

Tone City

57% similarity
$52.77via Reverb

Shared character: phaser, filter, modulation

ZVEX Vibrophase

Zvex

56% similarity

Shared character: phaser, vibrato, tremolo

Marshall VT-1

Marshall

56% similarity
$46.14via Reverb

Shared character: vibrato, tremolo, modulation

Carl Martin TremO'vibe

Carl Martin

56% similarity
$380via Reverb

Shared character: vibrato, tremolo, modulation

Crazy Tube Circuits Cyclone

Crazy Tube Circuits

55% similarity

Shared character: phaser, tremolo, modulation

Behringer The Flange

Behringer

50% similarity

Shared character: phaser, tremolo

See all alternatives to the Electro-Harmonix Worm (cheaper + boutique) →

Questions people ask

What are good alternatives to the Electro-Harmonix Worm?+

The closest matches in character are the Caroline Guitar Company Arigato, the Electro-Harmonix Mod Rex, the Henretta Engineering H-Bomb Trembrato.

What pairs well with the Electro-Harmonix Worm?+

Strong matches from rig and tone-complementarity evidence: Soldano SLO 100 100-Watt Tube Guitar Amplifier, Catalinbread Giygas, Electro-Harmonix Big Muff Pi — Soldano SLO 100 100-Watt Tube Guitar Amplifier's own high gain character is the real reason this is worth trying.

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