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Pre-Owned Walrus Fundamental Series Phaser

Walrus Fundamental Series Phaser

Walrus Fundamental Series Phaser: Versatility Meets Classic Tone

Digital Emulation with Analog Heart

The Fundamental Phaser from Walrus Audio is a high-fidelity digital emulation of classic phaser effects, designed to cater to both professionals and beginners alike. With its three distinct Phaser algorithms, this pedal offers a versatile range of sounds from subtle tonal modulations to deep, resonant phasing. Whether you're playing small venues or gearing up for a tour, the Fundamental Phaser adapts to every performance scenario with ease.

Intuitive Controls for Precise Sound Shaping

This pedal simplifies sound customization without compromising on depth:

  • Rate: Adjusts the speed of the LFO modulation, allowing for a range from slow, subtle shifts to rapid, noticeable motion.
  • Feedback: Controls the intensity of the signal feedback for more pronounced resonance.
  • Depth: Sets the extent of pitch modulation, letting you fine-tune the effect from mild to extreme.

Three Modes for Sonic Flexibility

Equipped with a slide switch, the Fundamental Phaser allows easy switching between three modulation styles to suit different musical contexts:

  • Light: Offers a gentle phaser effect that lightly modulates your signal, perfect for subtle enhancements.
  • Medium: Captures the essence of a warm analog phaser, ideal for classic rock and funk.
  • Heavy: Delivers a robust, multi-voiced phaser for experimental sounds and modern musical explorations.

Compact and Robust Design

The Fundamental Phaser is housed in a durable diecast enclosure with a sleek black finish and stylish pink and off-white ink, making it a visually appealing addition to any pedalboard. Its compact dimensions (4.33" x 2.16" x 1.61”) ensure it fits even on crowded setups without taking up too much space.


  • Finish: Black with pink and off-white ink
  • Enclosure Size: 4.33" x 2.16" x 1.61”
  • Power Requirements: 9VDC (100mA minimum)
  • Recommended Power Supply: Isolated power supply for optimal performance; daisy chain supplies not recommended
This pedal works nicely as intended and is in very good condition, exhibiting only light external wear and has had velcro applied to the bottom as can be seen in photos.