The Fundamental series gives you three variations of the same effect in each pedal. Three variations of a classic quality effect updated for modern times with a feel from the past.

The Fundamental Drive is a versatile overdrive with the tonal integrity to live on a professional's pedalboard but with simplified controls friendly enough for even the newest effect pedal users. It’s the perfect tool at the front of your chain to set the tone for your whole rig.

Fundamental Drive

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

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.

Slide Switch – The slide switch allows you to change between three distinct flavors 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.

The Drive comes in a Black finish with red and off-white ink.
The diecast enclosure’s exact size is 4.33" x 2.16" x 1.61”.

• Power requirements are 9VDC (100mA minimum).
• The use of an isolated power supply is recommended for powering all Walrus Audio Pedals.
• Daisy chain power supplies are not recommended. Power supply not included.
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Online effects peddler and Eugene Oregon's local musician resource for effects pedal and pedalboard related needs. Happy rig, happy gig.

Thank you,
Guy Eckelberger
Professional Organic Pedal Farmer. Since 1976
Member and Founder-Tone Farmers Union —since 1961