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Rectangular silver guitar pedal with four knobs and two footswitches

Electro Harmonix

Electro-Harmonix Superego Synth Engine effect pedal

SKU CH-J67T-ZP21P

Freezes notes and chords for infinite sustain, adds glissando, stacks layers and includes an effects loop for external processing

  • TypeElectro-Harmonix SuperEgo Synth Engine Guitar Effects Pedal
  • Accessory TypeOther
  • Weight1.45
  • Infinite sustain for organ-like textures
  • Auto mode freezes notes and chords as you play
  • Controllable glissando creates fluid pitch transitions
  • Built-in effects loop processes wet signal independently
  • Latch mode with layer stacks sounds for orchestral depth

Infinite sustain and synth tones

The Electro-Harmonix Superego Synth Engine is a polyphonic guitar effects pedal that captures notes and chords to generate organ-like and synth-like textures. It provides infinite sustain and smooth glissandos for players seeking ambient soundscapes and orchestral layering. A built-in effects loop allows external processors to be inserted into the wet signal path. This unit is designed for guitarists who want to reshape their instrument's voice entirely.

Passive thermal design and low power

The pedal operates on a supplied 9-volt power supply and draws minimal current, producing no audible fan noise or significant heat during extended use. Its compact metal chassis dissipates warmth passively across the enclosure surface. Weighing 1.45 units, it adds negligible mass to a pedalboard and requires no active cooling considerations. The simple power requirement suits standard pedalboard power supplies.

Replaces basic freeze or hold pedals

This unit upgrades from simple momentary sustain pedals by adding controllable glissando, attack and decay shaping, and a wet-loop for external processing. The jump is worth it when you need polyphonic stacking and synth-style portamento rather than a single frozen chord. It is not for players who only need a basic latching sustain function or who require MIDI control and preset storage.

Highlights

  • Infinite sustain for organ-like textures
  • Auto mode freezes notes and chords as you play
  • Controllable glissando creates fluid pitch transitions
  • Built-in effects loop processes wet signal independently
  • Latch mode with layer stacks sounds for orchestral depth

Specifications

BrandElectro-Harmonix
TypeElectro-Harmonix SuperEgo Synth Engine Guitar Effects Pedal
Accessory TypeOther
Weight1.45

Questions about this item

How do I connect the 9 V power supply and the effects loop without creating a ground loop?

Plug the supplied 9 V adaptor into the pedal's power jack, then run a cable from the Send jack to your external effect's input and another from that effect's output back to the Return jack; keep all power cables away from the audio leads to avoid hum.

Which parts will need replacement after heavy gigging?

The footswitches and the 9 V DC jack are the only mechanical contacts that wear out; the internal circuitry is solid-state and has no user-serviceable components.

At what point does the glissando or sustain start to degrade during a long set?

The pedal uses digital sample-and-hold with no moving parts, so glissando smoothness and infinite sustain remain consistent for the entire performance.

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