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Walrus Fundamental Distortion

Walrus Audio Fundamental Series Distortion

Walrus Fundamental Distortion: Versatile and User-Friendly

The Walrus Audio Fundamental Series Distortion pedal is designed to provide professional-quality tones with simplified controls that are user-friendly for even the newest effect pedal users. This pedal is part of a line of 8 pedals, each with the tonal integrity to live on a professional's pedalboard while offering straightforward functionality. Designed and assembled at Walrus Audio headquarters in Oklahoma City, OK, the Fundamental Distortion pedal covers a wide range of sounds from dark and doom to sharp cutting leads.

Comprehensive Control with Simple Design

The Fundamental Distortion features three sliders for tweaking the sound and a three-way switch for changing pedal modes. This design allows for a wide range of tonal possibilities with minimal complexity, making it easy to achieve your desired sound quickly.

Gain Slider

The Gain slider sets the amount of gain applied to your guitar signal passing through the fuzz circuit. This control allows you to dial in anything from subtle overdrive to heavy distortion.

Tone Slider

The Tone slider controls the frequency response of the signal after distortion. Moving the slider below the center boosts the highs, while moving it above the center cuts the highs. This feature provides a flexible EQ to shape your tone precisely.

Volume Slider

The Volume slider sets the overall output volume of the pedal, ensuring that you can match the pedal's output to the rest of your rig.

Three Distinct Modes

The slide switch on the Fundamental Distortion pedal allows you to choose between three distinct flavors of distortion, each offering different clipping modes or tone profiles:

  • Dark: Asymmetric silicon clipping with an added high-frequency cut for a dark and dynamic sound.
  • Si: Classic silicon hard clipping diodes, providing a compressed and crunchy tone.
  • LED: LED hard clipping diodes, offering a dynamic and crunchy sound. Note that the LED clipping mode will be louder due to the nature of the LEDs, so adjust the volume slider accordingly.


  • Controls:

    • Gain Slider: Adjusts the amount of gain.
    • Tone Slider: Controls the frequency response (boosts/cuts highs).
    • Volume Slider: Sets the output volume.
    • Slide Switch: Selects between Dark, Si, and LED modes.
  • Jacks:

    • Input Jack: 1/4 inch cable from the instrument.
    • Output Jack: 1/4 inch cable to amplifier.
    • 9V Jack: 9-volt DC, Center Negative, 100mA min.
  • Bypass Switch: Turns the effect on and off.

  • Bypass LED: Illuminated when the effect is engaged.

This pedal ships fully insured with signature required.