Walrus Audio Fundamental Series Overdrive Pedal

Walrus Audio Fundamental Series Overdrive Pedal

Walrus Audio
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Support a small business by ordering your awesome new Walrus Audio pedal from Southend Music Exchange!

For the Fundamental Series, Walrus Audio have challenged themselves to design a set of pedals with the tonal integrity that’s required to live on a professional’s pedalboard, but with simplified controls friendly enough for even the newest effect pedal users.

Each Fundamental pedal has 3 sliders for tweaking the sound and a three-way switch for changing pedal modes. The result is a line of 8 pedals that will keep you covered from your first band practice, all the way to a sold-out arena.

Fundamental Drive

The Fundamental Drive is a versatile overdrive that allows for a wide range of tones thanks to its 3-mode switch. This is the perfect tool at the front of your chain to set the tone for your whole rig.

Key Features

  • Overdrive Variety – The slide switch allows you to change between 3 distinct flavours of the pedal. Each position has different clipping modes or tone profiles:
  • Smooth - A classic soft clipping silicon overdrive. Clean and smooth.
  • Crunch - Silicon soft clipping with added hard clipping silicon diodes and a slight low-end boost. Crunchy and edgy.
  • Bright - Silicon soft and hard clipping from the Crunch mode with a pre-clipping low end cut. Bright and glassy.
  • Bypass Switch – Turns the effect on and off. 
  • Bypass LED - Illuminated when the effect is engaged.


  • Gain: The Gain slider sets the amount of gain applied to your guitar signal passing through the overdrive circuit.
  • Tone: The Tone slider controls the amount of high-frequency level reduction.
  • Volume: The Volume slider sets the overall output volume of the pedal.
  • Input Jack: 1/4-inch cable from instrument.
  • Output Jack: 1/4-inch cable to amplifier.
  • 9v Jack: 9-volt DC, Center Negative, 100mA min.