Electro-Harmonix Mod Rex Polyrhythmic Modulator Effects Pedal

Electro-Harmonix Mod Rex Polyrhythmic Modulator Effects Pedal

★★★★★ 4.9 Stars — Over 1,500 Google Reviews

Original price was: $659.00.Current price is: $525.00.

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Free pickup from our Melbourne Store at 4 Drake Boulevard, Altona VIC 3018. Your order will typically be ready by the next business day. We recommend calling us on (03) 8360 7799 beforehand to check it's ready for collection.

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Electro-Harmonix Mod Rex Polyrhythmic Modulator Pedal

Weave compelling, shifting, and deeply intricate musical textures with a kinetic tool designed to expand your sonic horizon. The Electro-Harmonix Mod Rex Polyrhythmic Modulator is an advanced, multi-stage modulation matrix built for guitarists, synthesists, and electronic musicians alike. By combining four independent, time-synced effects engines into a single powerhouse, this pedal lets you sync complex rhythm patterns to your tracks. It is the premier choice for progressive studio producers and experimental live performers who want to push past the limits of traditional single-stompbox modulation.

Angkor Music Technical Evaluation: Four-Engine Sync Matrix & Polyrhythmic Subdivisions

The engineering core of the Mod Rex relies on a powerful digital processor that runs four modulation engines simultaneously and in perfect phase alignment. Musicians can tap into a comprehensive MOD section (Vibrato, Flanger, Chorus, or Phaser), a dedicated TREM section for volume tracking, a spacious PAN engine for stereo imaging, and a dynamic FILTER section featuring Low-Pass, High-Pass, and Band-Pass modes. Rather than locking every effect to the same quarter-note pulse, the Mod Rex gives you nine independent tempo subdivision choices per engine—ranging from whole notes up to tight 16th-note patterns—to create intricate, hypnotic polyrhythms.

E-E-A-T Studio Routing: Robust MIDI Integration & True Stereo Processing

At Angkor Music, our pro-audio and effects team highly recommends the Mod Rex for advanced rig integration. Comprehensive MIDI Automation: Featuring a highly stable MIDI clock sync, the pedal locks instantly onto incoming clock data from your DAW, hardware sequencer, or drum machine, allowing you to trigger preset changes instantly via Program Change (PC) messages. Flexible I/O Options: Built with true stereo inputs and outputs, it preserves the wide spatial separation of high-end synthesizers and complex stereo guitar rigs, making it an excellent addition to modern studio setups.

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Technical Specifications

  • Brand: Electro-Harmonix (EHX)
  • Model Portfolio: Advanced Digital Modulation Series
  • UPC Barcode Identification: 683274012209
  • Circuitry Architecture: High-Resolution Digital Processing Engine
  • Bypass Switching Mode: High-Fidelity Buffered Bypass Hardware
  • Audio Channel Routing: True Stereo Input & Output Connections
  • Simultaneous Effects Blocks: 4 Time-Synced Modulation Engines (Mod, Tremolo, Pan, Filter)
  • LFO Waveform Shapes: Rising Sawtooth, Triangle, Falling Sawtooth, Square Wave
  • Tempo Subdivision Matrix: 9 Selectable Note Lengths per Section (Whole Note to 16th Note)
  • Onboard User Preset Slots: 100 Storable Slots (Ships with 20 Factory Programs)
  • Control Connections: MIDI In (Clock, CC, PC), Expression Input, External Foot Controller Input
  • Power Adapter Specifications: 9.6VDC-200mA Center-Negative Adapter (Included)
  • Current Draw Rating: 100mA at 9VDC
  • Physical Dimensions: 5.75 x 4.75 x 2.5 Inches (146mm x 121mm x 64mm)

What's In The Box Product Contents

  • Core Device: 1 x Electro-Harmonix Mod Rex Polyrhythmic Modulator Pedal
  • Factory Power Supply: 1 x Genuine EHX 9.6VDC 200mA Australian-Compatible AC Power Adapter
  • Documentation: 1 x Official Electro-Harmonix Mod Rex Comprehensive User Manual

Key Product Features

  • Four Simultaneous Sync Engines: Layer Mod, Tremolo, Pan, and Modulated Filters at the same time to turn basic chords into complex, rhythmic phrases.
  • Nine Custom Note Subdivisions: Set different speeds for each effect layer to build fascinating, custom polyrhythmic patterns.
  • Four Independent LFO Contours: Shape each effect layer with rising sawtooth, triangle, falling sawtooth, or square waves for precise envelope control.
  • Full MIDI Automation Support: Sync your performance effortlessly to your DAW or drum machine with MIDI Clock tracking and full Control Change parameter access.
  • True Stereo Audio Paths: Keeps your stereo synth lines, keyboards, and dual-amp guitar setups sounding wide and beautifully separated.
  • 100 Onboard Preset Profiles: Save up to 100 custom rhythmic configurations, with 20 excellent factory patches included to inspire you right out of the box.

Frequently Asked Questions

How does the PAN section behave if the pedal is connected to a standard mono amplifier setup?
When running the Mod Rex into a standard mono amplifier setup, the PAN section automatically adapts to act as a second, independent tremolo engine. To create unique, complex volume interactions, the LFO wave shapes in this secondary mono-tremolo mode are completely inverted relative to the primary tremolo engine, preventing your volume layers from canceling each other out.

What parameters can I control using an external expression pedal plugged into the EXP jack?
The expression pedal input gives you flexible real-time control. By default, you can assign it to control the master tempo (BPM) of the entire sync matrix on the fly. Additionally, you can map the expression input to adjust specific depth or rate parameters across the engines, making it easy to create dramatic, foot-controlled sweeps during live performances.

Can I use a standard multi-pedal power chain to run the Mod Rex safely?
The Mod Rex requires a stable 9.6VDC power source drawing at least 100mA of current. While it can run on isolated high-current outputs from premium pedalboard power bricks, we always suggest using the included Electro-Harmonix factory AC adapter. This ensures the digital processor receives perfectly regulated, isolated power, preventing any unwanted high-frequency switching noise or hum from entering your signal path.

 

Additional information

Weight 0.56 kg
type

Effects Pedal

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