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Everything in Music Since 1958
Everything in Music Since 1958

Walrus Audio Qi Etherealizer Multi-Effects Guitar Pedal - Terracotta

Original price $0
Original price $449.99 - Original price $449.99
Original price
Current price $449.99
Default Title: $449.99
Current price $449.99
♫ In stock

Pickup available at Chuck Levin's Washington Music Center

Usually ready in 24 hours
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In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

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About Item Conditions


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Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.

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From Dreamy Soundscapes to Expressive Modulation - The Walrus Audio Qi Etherealizer Multi-Effects Guitar Pedal - Terracotta

The Qi Etherealizer (pronounced “chee ethereal-izer”), a collaborative creation with Yvette Young, is a multi-effects pedal that combines Chorus, Delay, Granular effects, and, of course, Reverb, into a creative playground for atmospheric exploration.


  • Multi-Effects Engine: Combines Chorus, Delay, Granular, and Reverb effects.
  • Series & Parallel Routing: Run effects in sequence or blend them independently.
  • Grain Effect Modes: Random glitchy textures or rhythmic sample playback.
  • Five Grain Playback Options: Normal, Double-Speed, Half-Speed, Reverse, and Random.
  • Digital Delay with Tap Tempo: Up to 2-second repeats with rhythmic subdivisions.
  • Chorus Modes: Lush Tri-Chorus or wide Stereo Chorus.
  • Space Knob: Adds adjustable ambient reverb.
  • Tone Knob: Shapes the effect’s character with a low-pass filter.
  • Freeze Function: Hold effects for sustained ambient textures.
  • MDSP Processing Platform: High-fidelity digital engine for superior sound.
  • Durable & Compact Design: Built for reliability and performance.


Known for her innovative and explorative fingerstyle playing technique, love of guitar pedals, and leadership of the math rock band Covet, the Qi reflects her approach to creating lush, evolving soundscapes. Named after the vital life energy that flows through all living things, the Qi is designed to deliver rich textures, expansive atmospheres, and dynamic layers. By blending Yvette’s artistic vision with cutting-edge design, the Qi opens the door to immersive, otherworldly sounds.

The Qi allows you to mix and match the chorus, delay, and grain and run in series or parallel to create your own inspiring universe of possibility in a stereo field. With the ability to save presets and bypass the chorus, delay, and grain controls, you can quickly and instantly change settings by simultaneously pressing the Bypass and Freeze stomp switches. Go from a traditional chorus with a little bit of delay, or go all in and let the Qi take over with unexplainable washes of glitchy and lush ambiance. Whatever your style is, the Qi will give it a new life.

The Qi is the first creation to emerge from Walrus Audio's groundbreaking proprietary digital processing platform, MDSP. Designed in-house by Walrus Audio's talented engineering team, MDSP sets a new benchmark for high-fidelity audio and innovative design, delivering decades of inspiration to creators seeking practical yet forward-thinking gear.

At the core of MDSP is the powerful ARM-based Cortex M7 processor, renowned as the highest-performing processor in its class. With a proven history in high-level electronics, the Cortex M7 has been meticulously tailored for advanced audio algorithm processing in the MDSP platform. This unique system integrates a microcontroller and a DSP into a single compact unit, enabling a smaller, modular design that can seamlessly adapt to a wide range of pedal formats.

This modular and "mini" approach empowers Walrus Audio to push the boundaries of audio processing. The enhanced capabilities of Walrus’s MDSP allow for the development and execution of more sophisticated algorithms than ever before, delivering unparalleled creative possibilities for musicians and audio professionals alike.

The MDSP platform also boasts a superior audio codec, supporting faster sample rates, increased bit depth, greater headroom, and an exceptional signal-to-noise ratio. These enhancements ensure outstanding audio performance, setting a new standard in digital signal processing for the music industry.

The introduction of MDSP reflects Walrus Audio's commitment to providing creators with cutting-edge tools that inspire innovation and creativity.

Global Controls

  • Space Knob: Adds reverb to the affected signal. Adjusts mix and decay from small room sounds to lush, ambient reverb.
  • Tone Knob: Controls a low-pass filter to shape the tonal character of the effect output.
  • Series and Parallel Routing:
    • Series: Effects feed into each other in the order of Chorus > Delay > Grain > Output.
    • Parallel: Effects are summed together without feeding into each other. The top row of knobs controls individual effect levels.
  • Mix/Dry Parameter: Adjusts wet/dry balance in series mode and dry level in parallel mode.

Grain Controls

  • Grain Cloud Mode: Triggers small, random samples (grains) from playing for a glitchy texture. X knob controls grain density.
  • Phrase Sample Mode: Triggers grains rhythmically from detected peaks in playing. X knob adjusts playback tempo.
  • Playback Modes:
    • x1: Normal
    • x2: Double-speed, +1 octave
    • x0.5: Half-speed, -1 octave
    • REV: Reverse playback
    • RNDM: Random combination of previous modes

Delay Controls

  • Delay Effect: Clean digital delay with up to 2-second repeats.
  • Time Knob: Adjusts delay time.
  • Feedback Knob: Controls the number of repeats.
  • TAP/OSC Switch:
    • Tap Tempo: Sets delay timing.
    • Hold Down: Increases feedback for oscillating delay effects.

Delay Subdivisions

  • Quarter Note
  • Dotted Eighth Note
  • Eighth Note

Chorus Controls

  • Tri Chorus: Multi-dimensional chorus with three modulated voices for a full, lush sound.
  • Stereo Chorus: Classic chorus with modulation offset 180 degrees in the right channel for a wide stereo effect.


SPECIFICATIONS

  • Bypass Type: Buffered Bypass
  • Input Jacks: 2x 1/4” Unbalanced (Stereo Left and Right)
  • Output Jacks: 2x 1/4” Unbalanced (Stereo Left and Right)
  • Output Impedance: 220 Ohm
  • Frequency Response: 20Hz to 20KHz
  • MIDI Input: 1/8” TRS MIDI In Type A
  • MIDI Thru: 1/8” TRS MIDI Thru Type A
  • Power Requirements: 9V DC, Center Negative (300mA minimum)
  • Enclosure Dimensions (with knobs): 5.83” x 4.87” x 2.30”
  • Sample Rate: 32kHz
  • Recommended Power Supply: Isolated 9V DC
  • Power Supply Compatibility: Daisy chain power supplies not recommended
  • Included Power Supply: Not included


Manufacturer: Walrus Audio
Model: 900-1094
SKU: I813825-N-2-WHXA


We are Chuck Levin's Washington Music Center

Maryland, Virginia, and Washington DC's legendary music shop. Family-owned and operated since 1958. Buy gear the way it was meant to be bought, from a store that's been there through it all and has the vibe to prove it. We're staffed with musicians and industry experts, people that live and breathe music gear. Our mission is to help you find the right gear for your project, that thing that will bring you the most joy out of what you do. We're an authorized dealer for almost every brand, we stock items the other stores don't, so you can try before you buy. Stop by our Wheaton, MD showroom and see for yourself.

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