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Walrus Fundamental Tremolo Pedal

Walrus Fundamental Series: Tremolo Pedal

Walrus Audio Fundamental Series: Tremolo Pedal

For Professional and Beginner Musicians Alike

The Fundamental Tremolo from Walrus Audio is part of their Fundamental Series, designed to deliver professional-quality tone with user-friendly controls. Whether you're a beginner or a seasoned musician, this pedal offers the versatility and reliability you need, from your first band practice to sold-out arena shows. Designed and assembled at Walrus Audio headquarters in OKC, OK, the Fundamental Tremolo is a classic optical tremolo pedal that gives you that iconic chewy movement. With three wave shapes to select from, you can achieve sounds ranging from smooth and soothing to glitchy and crazy.

Versatile and Easy-to-Use Controls

The Fundamental Tremolo features three sliders for tweaking the sound and a three-way switch for changing pedal modes. The Rate slider sets how fast or slow the LFO is oscillating, the Depth slider controls the strength of the tremolo effect, and the Volume slider sets the overall output volume of the pedal. The slide switch allows you to change between three distinct oscillator waveforms: Sine, Square, and Random. This simple yet effective control layout ensures that you can easily dial in your desired tremolo sound.

Professional-Quality Tone

Walrus Audio designed the Fundamental Series to meet the tonal integrity required for a professional's pedalboard. The Fundamental Tremolo delivers warm and rich tremolo tones with the flexibility to suit various musical styles. The classic optical tremolo circuit ensures that you get the iconic modulation effects that have been a staple in music for decades.


  • Effect Type: Optical Tremolo
  • Controls:
    • Rate: Adjusts the speed of the LFO
    • Depth: Controls the intensity of the tremolo effect
    • Volume: Sets the overall output volume
    • Slide Switch: Selects between Sine, Square, and Random waveforms
  • Bypass Switch: Turns the effect on and off
  • Bypass LED: Illuminated when the effect is engaged
  • Input Jack: 1/4 inch cable from the instrument
  • Output Jack: 1/4 inch cable to amplifier
  • Power: 9V DC, Center Negative, 100mA min (adapter not included)

This item ships fully insured with signature required.