Super-sized, highly tweakable Muff-inspired tones.
Welcome to a new era of the most iconic fuzz sound the world has ever known!
The Big Muff’s huge and super saturated tone defined the signature sound of countless artists over the past decades.
Its circuit had a massive impact on the entire industry and has been modified over and over and over again.
You think it’s all been done, right? Oh boy does KMA have a surprise for you here!
The Chief Disruptor aims to offer more Big Muff-style tones than, well, a Big Muff!
The pedal bundles a huge amount of tone-shaping control, plus three classic Muff-style voices in a single box.
There are master and clean dials, while the oversized 'Disruption' knob handles gain control.
The Vintage Mode will give you every shade of discrete overdrive.
The Tight Mode serves up a more focused and modern tone with less bass and super crisp harmonics.
Heavy Mode is the essence of what we all love about Muffs: heavy, sustaining and crazy thick fuzzy distortion, with bone-shaking lows and chewy mids.
Plus, KMA carefully balanced the gain control to achieve total control of even the slightest harmonic nuances.
Whether you’re looking for low gain drive, crunchy medium gain rhythm tones, singing or saturated lead sounds, the Disruption can cover all your needs!
KMA Chief Disruptor Fuzz features:
• The ultimate Muff-style drive!
• 3 distinctive gain structures.
• Pre or Post Clean Blend for a tight low end.
• Active Bass and Treble EQ.
• Separate Mid EQ with footswitch and frequency control.
• Top-Boost for crunchier harmonics.
• External Expression control: allows for filter or pseudo-phase tones.
• Internal controls for Mid Q and Top Boost Level.
• True Bypass.
• Power: 9V DC.
• Current Draw: 160mA.
Specs
| Type | Fuzz |
| Condition | New |
| Power | 9V DC |
| Current Draw | 100mA |
| Power supply included | No |
| Manufacturer Warranty | 5 years |
| Country of Origin | Germany |
FREE SHIPPING
- Free shipping within Canada.
- Free shipping to the USA.
- Free shipping on international orders over 520$.
Visit the Shipping page for more.
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.
Frequently Asked Questions
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How can I tell if an item is in stock? +
Each product page shows an availability status.
• In stock items are ready to ship.
• Out of stock items are currently unavailable.
You can enter your email to be notified when an item is back in stock.
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Where are you located? +
We’re based in Blainville, Quebec, Canada.
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When will my order ship? +
Orders placed before 12 PM EST ship the same business day.
Tracking details are sent shortly after purchase.
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How much does shipping cost? +
Most orders ship free to Canada and the US.
International orders ship free on purchases over $520 CAD.
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Which shipping methods do you use? +
Orders ship via UPS Expedited by default.
For faster delivery, you can select UPS Express Saver at checkout.
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How long does shipping take? +
Typical delivery times are:
• Canada: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• USA: 2–3 business days with UPS Expedited, 1 business day with UPS Express Saver
• International: 3–5 business days with UPS Expedited, 2–3 business days with UPS Express Saver
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Which payment methods do you accept? +
We accept all major credit cards and PayPal.
Financing options are available through Klarna and RBC PayPlan.
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Do Canadian customers pay sales tax? +
Yes. Sales tax is applied based on your province of residence:
• Alberta: 5%
• British Columbia: 5%
• Manitoba: 5%
• New Brunswick: 15%
• Newfoundland and Labrador: 15%
• Northwest Territories: 5%
• Nova Scotia: 14%
• Nunavut: 5%
• Ontario: 13%
• Prince Edward Island: 15%
• Quebec: 14.975%
• Saskatchewan: 5%
• Yukon: 5%
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Do USA customers pay import fees? +
Yes. Starting August 29, 2025, all US-bound shipments will be subject to duties, taxes, and brokerage fees.
These charges are determined by US Customs and collected by UPS at delivery.
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Do international customers pay import fees? +
Yes. International shipments may be subject to duties and taxes.
These charges are set by the destination country’s customs authority and collected by UPS at delivery.