KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
Call & Collect From Our Warehouses
How It Works
Call & Collect From Our Warehouses
Call & Collect From Our Warehouses
How It Works
Call & Collect From Our Warehouses
KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
SKU:Product Code: KMA-GOTW
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Order online with confidence, or visit one of our showrooms to try this model for yourself.
You’ll often be able to compare it alongside similar instruments, helping you make an informed choice.
Other Stores:
Surrey:
Bonners Piano & Keyboard Centre, 46B Albert Road North Reigate Surrey RH2 9EL
- NEAREST TO YOU
- ON DISPLAY
- NOT ON DISPLAY
This model is not currently on display in Surrey, but we may be able to arrange a transfer:
Milton Keynes:
Bonners Piano & Keyboard Centre, 1 Ward Road Bletchley Milton Keynes MK1 1JA
- NEAREST TO YOU
- ON DISPLAY
- NOT ON DISPLAY
This model is not currently on display in Milton Keynes, but we may be able to arrange a transfer:
Newcastle:
Bonners Piano Centre, Unit 3A Airport Industrial Estate, Kingston Park, Newcastle-Upon-Tyne, NE3 2EF
- NEAREST TO YOU
- ON DISPLAY
- NOT ON DISPLAY
This model is not currently on display in Newcastle, but we may be able to arrange a transfer:
Sussex:
Bonners Piano & Keyboard Centre, 9 Faraday Close Eastbourne East Sussex BN22 9BH
- NEAREST TO YOU
- ON DISPLAY
- NOT ON DISPLAY
This model is not currently on display in Sussex, but we may be able to arrange a transfer:
Eastbourne Guitar Store:
Bonners Guitar Store, 9 Faraday Close Eastbourne East Sussex BN22 9BH
- NEAREST TO YOU
- ON DISPLAY
- NOT ON DISPLAY
This model is not currently on display in Eastbourne Guitar Store, but we may be able to arrange a transfer:
Price Match
Part Exchange*
KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
£220
KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
"The earth, once so tranquil and serene, started to shake more ominously than ever beneath her feet. After centuries of scaring the living daylights out of the ancestors, the monster-of-malice was back. She looked up with an imperious glance and faced her destiny, her irradiant eye focusing unwaveringly on the venerable creature ahead.
Suddenly, the earth stood still and there fell a deep silence. She had tamed the beast! She was the long-foreseen saviour, the GUARDIAN of the WURM”
Fusing together the powerful evolution of KMA’s highly regarded WURM Distortion with an intuitive, yet versatile and ultra-fast 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, prog-rock, shoegaze, indie and beyond.
Calling a pedal legendary or a cult classic is often stretching the truth, but when it comes to the Boss HM-2 MIJ it’s absolutely on the money. We’ve never tried to hide the fact that the WURM Distortion is our unabashed sonic love letter to this filthy box of doom and gloom, taking the essential ingredients of this classic, while in the process developing a way more flexible metal-distortion pedal.
While WURM absolutely nails that Swedish death-metal chainsaw sound, the pedal is not all about that and is adept for so many other genres. To give you an idea, famous players like David Gilmour, Prince, Johnny Marr, Belinda Butcher, Lee Ranaldo, Daron Malakian and others have all made their mark with this style of distortion.
We of course kept the iconic active HM-2 dual band EQ section, but added two more bands, giving a much wider range of tones to tailor your evil and gritty distortion sound. Each band now has a dedicated centre-frequency control on the front of the pedal, allowing you to quickly and easily change and fine-tune your tone.
The EQ-STYLE mode, now also on the front of the pedal, helps you carve out even more tonal variation. Selecting HM-II mode will get you that classic ‘chainsaw’ high-mids character. However, in KMA mode the EQ is a little more tonally balanced, less peaky and a bit wider in response. Selecting BOTH fattens and doubles up the tone stacking, allowing you to rank the LOWS and the HIGH MIDS and rip that Swedish forest even more to shreds.
To adjust the extent of drive compression, you can choose between 3 different clipping styles. Silicon (Si) delivers the original compression, for rich harmonics and singing leads. Asymmetric (A-S) increases the headroom and gives you more grit by retaining complex harmonics, while the OFF position lifts the sound of the Diodes for a slight compression and way more clarity, which is perfect for baritone guitars or bass.
Plus, the 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. It is also especially useful when running the GUARDIAN of the WURM into an already distorted high-gain amp.
In-Depth Controls
- Gain: Sets the amount of distortion
- Master: Sets the overall volume of the WURM Section
- Gate: Sets the threshold of the Noise Gate
- Blend: Blends in the input signal, often called "Clean Blend"
- Clip-Style (Toggle-Switch): SI (Silicon Diodes): The sound of the original HM-2 clipping, A-S (Asymmetrical): More grit and less compression, OFF (Lifted Diodes): Perfect mode for bass and baritones
- EQ-Style (Toggle-Switch): HM-II: activates original HM-2 High Mids EQ with fixed centre-frequency. KMA: activates KMA-designed High Mids EQ with adjustable centre-frequency. BOTH: activates both EQ-Styles
- Low: Active Semi-Parametric EQ for low frequency boost (up)/ cut(down) with adjustable centre-frequency between 60-150 Hz via below potentiometer (midpoint: 90Hz)
- L-Mid: Active Semi-Parametric EQ for low-mid frequency boost (up)/ cut(down) with adjustable centre-frequency between 300 Hz -1,05 kHz via below potentiometer (midpoint: 490 Hz)
- H-Mid: Active Semi-Parametric EQ for high-mid frequency boost (up)/ cut(down). EQ-Style "KMA": with adjustable centre-frequency between 850 Hz-3 kHz via below potentiometer. EQ-Style "HM-II": original HM-2 dual high-mid EQ with fixed centre-frequency
- High: Active semi-parametric EQ for high frequency boost (up)/ cut(down) with adjustable centre-frequency between 1.4-5 kHz via below potentiometer (midpoint: 2 kHz)
Delivery Information
At Bonners, we offer a range of flexible delivery and collection options designed to suit both the type of instrument you purchase and your location within the UK mainland.
We aim to dispatch most in-stock standard-sized items within 1 working day of receiving payment. Larger instruments and specialist deliveries may require additional scheduling time, and our team will contact you directly to arrange them.
Please note that we currently deliver to UK mainland addresses only.
Pre-Orders & Out of Stock Items
If you order a product that is temporarily out of stock, we will contact you as soon as possible to confirm the expected lead time.
If you would like to check availability before placing your order, our sales team will be happy to help. For many popular or newly released products, we can also take a small deposit to reserve your place in the queue ahead of new stock arriving.
Standard Parcel Deliveries
Smaller products and standard-sized packages are shipped using trusted third-party courier services, including FedEx and DX Express.
Most in-stock items are dispatched within 1 working day.
Delivery Charges
Product Value
- Over £250 FREE Delivery
- £28 - £249.99 £12 Delivery Charge
- Under £28 £9.99 Delivery Charge
Guitar Strings Delivery
- Royal Mail Delivery £4.99
- Tracked Courier Delivery£7.99
All deliveries require somebody to be available to receive and sign for the goods, particularly for high-value items.
If delivery cannot be completed, the courier will normally make up to two delivery attempts before returning the goods to our warehouse. Re-delivery charges may apply where necessary.
Some remote postcode areas, including the Scottish Highlands, offshore islands, West Wales and certain rural areas, may incur additional delivery charges and slightly longer delivery times.
Order Tracking
Once your order has been dispatched, you will receive a confirmation email containing your tracking number and courier details.
You can track your shipment directly with the courier once it has been dispatched.
Digital Piano Deliveries
As a specialist piano retailer, we offer two levels of delivery service for digital pianos and larger boxed instruments.
Because many digital pianos weigh between 60kg and 120kg, these deliveries are handled differently from standard parcels.
Economy Delivery
Our Economy Delivery service provides fast mainland UK delivery of your piano in its original flat-packed carton.
- Delivery is typically made between 8am and 6pm
- The piano will be delivered to your doorstep or ground floor entrance
- Assembly is not included
- You will need assistance available to help move the instrument into your property
Delivery Charges - New Digital Pianos
Delivery charges for new boxed digital pianos range from FREE to £49, depending on postcode area.
Some lower-value products supplied in particularly large cartons may carry a delivery charge of £25, which will be clearly shown at checkout.
Agency-Supplied Digital Pianos
Certain digital pianos are supplied directly by the manufacturer on an agency basis. Delivery charges for these products range from FREE to £175, depending on product type and delivery location.
Premium Delivery & Assembly Service
Our Premium Delivery & Assembly Service includes professional in-home setup by our experienced piano delivery team.
This service includes:
- Delivery into your home
- Full assembly of the piano and stand*
- Set up of a matching stool (where applicable)
- Positioning of the instrument
- Removal and recycling of packaging
We will contact you directly to arrange a convenient delivery date and estimated arrival window.
*Ground floor only - contact us for upstairs delivery quotes.
Assembly Charges
Professional in-home assembly charges range from FREE to £250, depending on postcode area and the make and model of the instrument.
Available services and pricing will be displayed automatically at checkout once your postcode has been entered.
Acoustic Piano Deliveries
Acoustic pianos require specialist handling and are delivered by experienced piano moving teams.
We can accommodate a wide range of delivery situations including:
- Ground floor deliveries
- Stair access
- Difficult access installations
- Crane and specialist lifting access where required
Standard Delivery Charges
Standard ground floor delivery to most UK mainland postcodes is FREE.
Additional charges may apply for:
- Scottish Highlands
- Offshore and island locations
- West Wales
- Difficult access properties
- Stair carries or specialist access requirements
Any applicable delivery charges will be confirmed in advance.
Piano Delivery Questionnaire
Prior to delivery, we will ask you to complete a short Piano Delivery Questionnaire. This allows us to assess access arrangements and ensure the safe delivery and positioning of your instrument.
This helps protect both your property and your piano whilst ensuring our delivery team arrives fully prepared.
Removal & Disposal of Existing Acoustic Pianos
If you have an existing acoustic piano that you no longer require, we can often arrange professional removal and disposal.
Disposal Service
Professional piano disposal services start from £99, depending on location and access conditions.
Part Exchange
If you are upgrading your piano, we may also be able to offer a part exchange allowance against your new instrument.
Please contact our sales team with details and photographs of your existing piano for an accurate quotation.
Warehouse Collection
We offer FREE collection from our warehouse locations in:
- Eastbourne
- Reigate
- Milton Keynes
- Newcastle
Collections must be arranged in advance with our sales team.
Please note:
- Warehouse collections require pre-booking
- A deposit may be required
- Online delivery orders cannot normally be converted to collection orders after purchase for security and logistical reasons
Need Help?
If you would like advice regarding delivery options, access requirements, assembly services or lead times, our experienced team will be happy to help.
Whether you're buying your first electric guitar, upgrading to a new keyboard, or investing in a beautiful piano the whole family can enjoy, Bonners are the musical finance specialists. We offer some of the most competitive finance deals in the UK on pianos, keyboards, guitars, and other musical instruments.
With both 0% APR interest free and longer-term interest-bearing options available, we're confident you'll find a plan that suits your budget - helping you bring home the instrument of your dreams sooner than you imagined.
*Some products are excluded from 0% APRFinance Offers. The available finance options will be shown at checkout.
Spread the Cost with Monthly Payments
At Bonners, we understand that investing in a quality musical instrument is a big decision. That’s why we’re offering a simple and flexible way to spread the cost, with 0% APR finance available on most purchases between £625 and £18,750. We also have some longer period (up to 36 months) Classic Credit 14.9% APR REPRESENTATIVE finance options with lower monthly payments. Our finance offers are designed to make high-quality instruments more accessible to musicians of all levels, from enthusiastic beginners to seasoned professionals. Whether you’re upgrading to a new stage piano, investing in your dream guitar, or kitting out your studio, the Bonners Music finance plans offer complete peace of mind.
Learn More About Finance Options >
The Lender
Bonners Limited is authorised and regulated by the Financial Conduct Authority and is the broker and not the
lender. Our firm reference number is 718966. Bonners Limited offers credit products from Secure Trust Bank PLC
trading as V12 Retail Finance. *Credit is provided subject to affordability, age and status. Minimum spend applies.
Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority.
Secure Trust Bank is registered in England and Wales 541132. Registered office: One Arleston Way, Solihull, B90 4LH. Authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority. Registration number: 204550.
KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
"The earth, once so tranquil and serene, started to shake more ominously than ever beneath her feet. After centuries of scaring the living daylights out of the ancestors, the monster-of-malice was back. She looked up with an imperious glance and faced her destiny, her irradiant eye focusing unwaveringly on the venerable creature ahead.
Suddenly, the earth stood still and there fell a deep silence. She had tamed the beast! She was the long-foreseen saviour, the GUARDIAN of the WURM”
Fusing together the powerful evolution of KMA’s highly regarded WURM Distortion with an intuitive, yet versatile and ultra-fast 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, prog-rock, shoegaze, indie and beyond.
Calling a pedal legendary or a cult classic is often stretching the truth, but when it comes to the Boss HM-2 MIJ it’s absolutely on the money. We’ve never tried to hide the fact that the WURM Distortion is our unabashed sonic love letter to this filthy box of doom and gloom, taking the essential ingredients of this classic, while in the process developing a way more flexible metal-distortion pedal.
While WURM absolutely nails that Swedish death-metal chainsaw sound, the pedal is not all about that and is adept for so many other genres. To give you an idea, famous players like David Gilmour, Prince, Johnny Marr, Belinda Butcher, Lee Ranaldo, Daron Malakian and others have all made their mark with this style of distortion.
We of course kept the iconic active HM-2 dual band EQ section, but added two more bands, giving a much wider range of tones to tailor your evil and gritty distortion sound. Each band now has a dedicated centre-frequency control on the front of the pedal, allowing you to quickly and easily change and fine-tune your tone.
The EQ-STYLE mode, now also on the front of the pedal, helps you carve out even more tonal variation. Selecting HM-II mode will get you that classic ‘chainsaw’ high-mids character. However, in KMA mode the EQ is a little more tonally balanced, less peaky and a bit wider in response. Selecting BOTH fattens and doubles up the tone stacking, allowing you to rank the LOWS and the HIGH MIDS and rip that Swedish forest even more to shreds.
To adjust the extent of drive compression, you can choose between 3 different clipping styles. Silicon (Si) delivers the original compression, for rich harmonics and singing leads. Asymmetric (A-S) increases the headroom and gives you more grit by retaining complex harmonics, while the OFF position lifts the sound of the Diodes for a slight compression and way more clarity, which is perfect for baritone guitars or bass.
Plus, the 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. It is also especially useful when running the GUARDIAN of the WURM into an already distorted high-gain amp.
In-Depth Controls
- Gain: Sets the amount of distortion
- Master: Sets the overall volume of the WURM Section
- Gate: Sets the threshold of the Noise Gate
- Blend: Blends in the input signal, often called "Clean Blend"
- Clip-Style (Toggle-Switch): SI (Silicon Diodes): The sound of the original HM-2 clipping, A-S (Asymmetrical): More grit and less compression, OFF (Lifted Diodes): Perfect mode for bass and baritones
- EQ-Style (Toggle-Switch): HM-II: activates original HM-2 High Mids EQ with fixed centre-frequency. KMA: activates KMA-designed High Mids EQ with adjustable centre-frequency. BOTH: activates both EQ-Styles
- Low: Active Semi-Parametric EQ for low frequency boost (up)/ cut(down) with adjustable centre-frequency between 60-150 Hz via below potentiometer (midpoint: 90Hz)
- L-Mid: Active Semi-Parametric EQ for low-mid frequency boost (up)/ cut(down) with adjustable centre-frequency between 300 Hz -1,05 kHz via below potentiometer (midpoint: 490 Hz)
- H-Mid: Active Semi-Parametric EQ for high-mid frequency boost (up)/ cut(down). EQ-Style "KMA": with adjustable centre-frequency between 850 Hz-3 kHz via below potentiometer. EQ-Style "HM-II": original HM-2 dual high-mid EQ with fixed centre-frequency
- High: Active semi-parametric EQ for high frequency boost (up)/ cut(down) with adjustable centre-frequency between 1.4-5 kHz via below potentiometer (midpoint: 2 kHz)
Delivery Information
At Bonners, we offer a range of flexible delivery and collection options designed to suit both the type of instrument you purchase and your location within the UK mainland.
We aim to dispatch most in-stock standard-sized items within 1 working day of receiving payment. Larger instruments and specialist deliveries may require additional scheduling time, and our team will contact you directly to arrange them.
Please note that we currently deliver to UK mainland addresses only.
Pre-Orders & Out of Stock Items
If you order a product that is temporarily out of stock, we will contact you as soon as possible to confirm the expected lead time.
If you would like to check availability before placing your order, our sales team will be happy to help. For many popular or newly released products, we can also take a small deposit to reserve your place in the queue ahead of new stock arriving.
Standard Parcel Deliveries
Smaller products and standard-sized packages are shipped using trusted third-party courier services, including FedEx and DX Express.
Most in-stock items are dispatched within 1 working day.
Delivery Charges
Product Value
- Over £250 FREE Delivery
- £28 - £249.99 £12 Delivery Charge
- Under £28 £9.99 Delivery Charge
Guitar Strings Delivery
- Royal Mail Delivery £4.99
- Tracked Courier Delivery£7.99
All deliveries require somebody to be available to receive and sign for the goods, particularly for high-value items.
If delivery cannot be completed, the courier will normally make up to two delivery attempts before returning the goods to our warehouse. Re-delivery charges may apply where necessary.
Some remote postcode areas, including the Scottish Highlands, offshore islands, West Wales and certain rural areas, may incur additional delivery charges and slightly longer delivery times.
Order Tracking
Once your order has been dispatched, you will receive a confirmation email containing your tracking number and courier details.
You can track your shipment directly with the courier once it has been dispatched.
Digital Piano Deliveries
As a specialist piano retailer, we offer two levels of delivery service for digital pianos and larger boxed instruments.
Because many digital pianos weigh between 60kg and 120kg, these deliveries are handled differently from standard parcels.
Economy Delivery
Our Economy Delivery service provides fast mainland UK delivery of your piano in its original flat-packed carton.
- Delivery is typically made between 8am and 6pm
- The piano will be delivered to your doorstep or ground floor entrance
- Assembly is not included
- You will need assistance available to help move the instrument into your property
Delivery Charges - New Digital Pianos
Delivery charges for new boxed digital pianos range from FREE to £49, depending on postcode area.
Some lower-value products supplied in particularly large cartons may carry a delivery charge of £25, which will be clearly shown at checkout.
Agency-Supplied Digital Pianos
Certain digital pianos are supplied directly by the manufacturer on an agency basis. Delivery charges for these products range from FREE to £175, depending on product type and delivery location.
Premium Delivery & Assembly Service
Our Premium Delivery & Assembly Service includes professional in-home setup by our experienced piano delivery team.
This service includes:
- Delivery into your home
- Full assembly of the piano and stand*
- Set up of a matching stool (where applicable)
- Positioning of the instrument
- Removal and recycling of packaging
We will contact you directly to arrange a convenient delivery date and estimated arrival window.
*Ground floor only - contact us for upstairs delivery quotes.
Assembly Charges
Professional in-home assembly charges range from FREE to £250, depending on postcode area and the make and model of the instrument.
Available services and pricing will be displayed automatically at checkout once your postcode has been entered.
Acoustic Piano Deliveries
Acoustic pianos require specialist handling and are delivered by experienced piano moving teams.
We can accommodate a wide range of delivery situations including:
- Ground floor deliveries
- Stair access
- Difficult access installations
- Crane and specialist lifting access where required
Standard Delivery Charges
Standard ground floor delivery to most UK mainland postcodes is FREE.
Additional charges may apply for:
- Scottish Highlands
- Offshore and island locations
- West Wales
- Difficult access properties
- Stair carries or specialist access requirements
Any applicable delivery charges will be confirmed in advance.
Piano Delivery Questionnaire
Prior to delivery, we will ask you to complete a short Piano Delivery Questionnaire. This allows us to assess access arrangements and ensure the safe delivery and positioning of your instrument.
This helps protect both your property and your piano whilst ensuring our delivery team arrives fully prepared.
Removal & Disposal of Existing Acoustic Pianos
If you have an existing acoustic piano that you no longer require, we can often arrange professional removal and disposal.
Disposal Service
Professional piano disposal services start from £99, depending on location and access conditions.
Part Exchange
If you are upgrading your piano, we may also be able to offer a part exchange allowance against your new instrument.
Please contact our sales team with details and photographs of your existing piano for an accurate quotation.
Warehouse Collection
We offer FREE collection from our warehouse locations in:
- Eastbourne
- Reigate
- Milton Keynes
- Newcastle
Collections must be arranged in advance with our sales team.
Please note:
- Warehouse collections require pre-booking
- A deposit may be required
- Online delivery orders cannot normally be converted to collection orders after purchase for security and logistical reasons
Need Help?
If you would like advice regarding delivery options, access requirements, assembly services or lead times, our experienced team will be happy to help.
Whether you're buying your first electric guitar, upgrading to a new keyboard, or investing in a beautiful piano the whole family can enjoy, Bonners are the musical finance specialists. We offer some of the most competitive finance deals in the UK on pianos, keyboards, guitars, and other musical instruments.
With both 0% APR interest free and longer-term interest-bearing options available, we're confident you'll find a plan that suits your budget - helping you bring home the instrument of your dreams sooner than you imagined.
*Some products are excluded from 0% APRFinance Offers. The available finance options will be shown at checkout.
Spread the Cost with Monthly Payments
At Bonners, we understand that investing in a quality musical instrument is a big decision. That’s why we’re offering a simple and flexible way to spread the cost, with 0% APR finance available on most purchases between £625 and £18,750. We also have some longer period (up to 36 months) Classic Credit 14.9% APR REPRESENTATIVE finance options with lower monthly payments. Our finance offers are designed to make high-quality instruments more accessible to musicians of all levels, from enthusiastic beginners to seasoned professionals. Whether you’re upgrading to a new stage piano, investing in your dream guitar, or kitting out your studio, the Bonners Music finance plans offer complete peace of mind.
Learn More About Finance Options >
The Lender
Bonners Limited is authorised and regulated by the Financial Conduct Authority and is the broker and not the
lender. Our firm reference number is 718966. Bonners Limited offers credit products from Secure Trust Bank PLC
trading as V12 Retail Finance. *Credit is provided subject to affordability, age and status. Minimum spend applies.
Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority.
Secure Trust Bank is registered in England and Wales 541132. Registered office: One Arleston Way, Solihull, B90 4LH. Authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority. Registration number: 204550.