

For the Fundamental Series, we challenged ourselves 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 three faders for tweaking the sound and a three-way switch for changing pedal modes. The result is a line of pedals that will keep you covered from your first band practice all the way to a sold-out arena. Designed and assembled at Walrus Audio headquarters in OKC, OK.
Fundamental Distortion
The Fundamental Distortion is a three-mode distortion. It covers a wide range of sounds from dark and doom through sharp cutting leads.
Gain – The Gain slider sets the amount of gain applied to your guitar signal passing through the distortion circuit.
Tone – The Tone slider controls the signal's frequency response after distortion. Left of center cuts highs and right of center boosts highs.
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.
1 – All claims require a purchase receipt. It is the customer's responsibility to present it when making a claim.
2 – Except as stated below, in-store sales are final and items purchased may not be returned. By completing their transaction, the customer acknowledges that they have taken the item(s) in optimal condition.
3 – Guitars, basses, pedals, amplifiers, accessories, and tubes are not returnable. By paying for the item, the customer acknowledges that: (i) they inspected it and found it to be in optimal aesthetic condition without defects; and (ii) they tested it and it was functioning properly.
4 – All claims due to defects are subject to the manufacturer’s terms and conditions.
5 – Guitars, basses, pedals, and amplifiers will have a 30-day warranty. The electronics of guitars and basses will have a 90-day warranty. Guitars Boutique, at its sole discretion, will decide whether to repair, replace parts or components (with identical ones), and/or replace the item with an identical one.
6 – At the store's discretion, defective items may be exchanged for an identical item SUBJECT to the defective item being in the same condition as when it was acquired, including its original packaging with all its accessories. This will be done as store credit only. The credit does not apply to special orders or lay-away.
7 – All merchandise leaving the store will be considered as used in the future.
8 – No refunds will be given, regardless of the person.
9 – Special, clearance, or discounted items are not returnable.
Puerto Rico only.
In case of a return, the shipping cost will be deducted from the refund.
Guitars Boutique ships to PR via federal mail USPS, UVA, and iWide.
Estimated delivery time once the order has been shipped:
- Lightweight items, less than 14 pounds are shipped via USPS.
- Heavier items are shipped via iWide and UVA.
- No shipments are made on Sundays.
Guitars Boutique is not responsible for delays caused by shipping companies.
- The buyer is responsible for the care of their instrument/equipment against changes in temperature, humidity, and unstable current.
All guitars, basses, pedals, and amplifiers will have a 30-day warranty. - The electronics of guitars and basses will have an extended warranty of 90 days.
- Suppliers, who generally reserve the right to decide whether to repair, replace parts or components (with identical ones), and/or substitute the item with an identical one, at their sole discretion.
- Exchanges, if warranted (at the store's discretion) and if the product is in optimal condition (including its packaging), are for store credit only.
- Credits do not apply to special orders or lay-away.