Description
Overview
The Electro-Harmonix Mod Rex Polyrhythmic Modulator is a kinetic tour-de-force designed to weave compelling, shifting musical tapestries. Engineered for guitarists, synthesists, and electronic musicians, this pedal pushes creative boundaries by utilizing four independent modulation sections synced in time. By blending diverse modulation types and LFO shapes, the Mod Rex allows users to create complex, evolving textures and virtually limitless polyrhythmic possibilities.
Key Details
- MOD Section: Versatile modulation engine featuring high-quality Vibrato, Flanger, Chorus, and Phaser. Includes a Depth knob for effect intensity and a Feedback control to manage resonance for Flanger and Phaser settings.
- TREM Section: Dedicated tremolo modulation that controls the volume of the signal, with a Depth control to set the intensity of the pulse.
- PAN Section: Stereo-capable modulation that shifts the signal between left and right channels. In mono operation, this section functions as a second tremolo with inverted wave shapes.
- FILTER Section: Advanced frequency modulation offering three modes: Low Pass Filter (LPF) to cut high frequencies, High Pass Filter (HPF) to cut low frequencies, and Band Pass Filter (BPF) to isolate a center frequency range.
- LFO Waveform Control: Each of the four sections can be assigned one of four LFO shapes: Rising Sawtooth, Triangle, Falling Sawtooth, or Square Wave, dictating how the modulation transitions and interacts across the pedal.
Use Cases
- Ambient Soundscapes: Combine slow-moving LFOs across the Filter and MOD sections to create evolving, atmospheric pads.
- Rhythmic Complexity: Use the polyrhythmic nature of the four synced sections to create interlocking rhythmic pulses that shift over time.
- Stereo Width Expansion: Utilize the PAN section in a stereo rig to create wide, sweeping movements that add professional dimension to a mix.
- Experimental Synthesis: Use the BPF and Square wave LFOs to create aggressive, stepped filter effects common in electronic music.
Installation
The Mod Rex is a hardware effect pedal designed for integration into a standard signal chain. Connect your instrument to the input and your amplifier or audio interface to the output. For full functionality of the PAN section, a stereo connection is required. Ensure the pedal is powered by a compatible power supply to maintain stable timing across the synced modulation sections.
Compatibility
- Instrument Compatibility: Compatible with electric guitars, synthesizers, and other electronic instruments.
- Signal Path: Supports both Mono and Stereo operations.
Additional Details
- Manufacturer: Electro-Harmonix
- Product: Mod Rex Polyrhythmic Modulator
- Format: Physical Effect Pedal
- Dimensions: 6.5″ x 8″ x 0.2″
- Weight: 2.35 lbs






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