KMA Machine

KMA Guardian of the WURM Distortion

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High Gain Distortion and Noise Gate!

Fusing together KMA’s beloved WURM distortion with an intuitive, yet versatile noise gate, Guardian of the WURM is the perfect metal monster.

From chugging hard-rock, droning doom metal and grinding Swedish death metal, the beast abides!

But, through its highly tweakable control set, the pedal can be tamed to provide impeccable clarity to your riffs, making this the definitive dirt pedal for metal.

So here it is: crank it up and you'll feel the rage of the ancient WURM, while the Guardian will help you tame that beast when needed!

Guardian of the WURM serves up the perfect pairing for an evil and gritty tone that never gets out of control... unless you want it to!

An even more versatile WURM!

The WURM is KMA’s unabashed sonic love letter to the classic BOSS HM-2 MIJ.

Guardian of the WURM takes things even further by adding a bunch of really useful new features!

Features like a highly configurable 4-band Active EQ, 3 different clipping styles and a high-mids switch give you access to a much wider range of tones!

Plus, the new Clean Blend feature helps to preserve your natural core tone.

Simply twist the Blend control to mix in the original unprocessed signal, allowing the initial pick attack of your tone to breathe.

Tame the beast!

We all know drive circuits like this can be noisy malice monsters!

To get a grip on the potential noise floor, KMA designed a sophisticated, yet easy to use Noise Gate.

This is based on a high-performance Blackmer VCA and provides lightning fast and precise performance.

Simply set the Threshold to taste via the GATE control and enjoy the silence.

Fast palm-mutes? No problem. Decaying notes? Dead simple to accomplish!

KMA Audio Guardian of the WURM features:

• Distortion Pedal with Built-in Noise Gate.

• The next evolution of KMA’s beloved WURM.

• Easy-to-use, yet high-performance Blackmer VCA-based Noise Gate.

• 3 different clipping styles.

• Clean Blend for a tight low end.

• Highly configurable 4-band Active EQ, with variable center-frequencies.

• 3 distinct types of High Mids frequency controls to tailor your tone.

• External Trigger Input allows Noise Gate control from an external source.

• FX-Loop between Distortion and Noise-Gate for signal-chain flexibility.

• Relay-based soft-switching with variable Gate switching modes.

• Power: 9V DC.

• Current Draw: 150mA.



Type Distortion
Condition New
Power 9V DC
Current Draw 150mA
Power supply included No
Manufacturer Warranty 5 years
Shipping & Return


  • Free shipping within Canada.
  • Free shipping to the USA.
  • Free shipping on international orders over 399$.

    Visit the Shipping page for more infos.

Fast Delivery

  • Canada : 1 - 2 business days
  • USA : 1 - 2 business days
  • Rest of the world: 3 - 5 business days.

Hassle-Free Returns

You have 45 days to test your new gear.
If you choose to return it, we’ll send a full refund.
It’s that simple: no bogus restocking fees or charges.

Visit the Returns page for more infos.


Frequently Asked Questions

  • Q : Is this item in stock? +

    A : On product pages, you can find an availability status.

    Products with the mention 'In stock' are in stock and ready to ship.

    Products with the mention 'Out of stock' are not currently in stock.

    For out of stock products, you can ask to get notified as soon as the item is back in stock.

    Enter your email in the ‘Email me when available’ field and you’ll be kept in the loop.

  • Q : Where are you located? +

    A : We’re in Blainville, Quebec, Canada.

    Contact us to schedule an appointment if you’d like to meet.

  • Q : When will my order ship? +

    A : Orders placed before 2PM EST ship on the same business day.

    An update with tracking details will be sent shortly after purchase.

    (Please note: business days don’t include weekends and holidays)

  • Q : How much does shipping cost? +

    A : Shipping to Canada and the USA is free on most orders.

    Shipping to the rest of the world is free on orders over 399$US.

    Visit the Shipping page for more infos.

  • Q : What shipping method do you use? +

    A : We ship with UPS.

  • Q : What payment methods do you accept? +

    A : We accept credit cards and Paypal.

  • Q : Do you charge sales taxes to Canadians? +

    A : Canadian residents are asked to pay sales taxes:

    Alberta: 5%.

    British Columbia: 5%.

    Manitoba: 5%.

    New Brunswick: 15%.

    Newfoundland and Labrador: 15%.

    Northwest Territories: 5%.

    Nova Scotia: 15%.

    Nunavut: 5%.

    Ontario: 13%.

    Prince Edward Island: 15%.

    Quebec: 14.975%.

    Saskatchewan: 5%.

    Yukon: 5%.

  • Q : Are there import charges on orders shipped to Canada? +

    A : No. Canadian customers will not be charged import fees.

  • Q : Are there import charges on orders shipped to the USA? +

    A : No. USA residents will not be charged import fees.

  • Q : Are there import charges on International shipments? +

    A: Shipping prices do not include VAT or other import taxes.

    Customers outside of Canada and the USA are responsible for duties and taxes.

    Orders that come back to the shop as refused by the customer will be refunded minus shipping.

    Please track your shipment to be aware of customs processing and delivery attempts.

  • Q : Can you declare a lower value on customs documents? +

    A : We understand that import fees are an annoying part of international purchases.

    However, we cannot offer to declare a lower value on customs forms.

    Customers outside of Canada and the USA are responsible for any fees that may be charged by their government.