KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
KMA Machines Guardian Of The Wurm Distortion Guitar Effects Pedal
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
1 in stock

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.
If you're unsure which instrument or product is right for you, nothing compares to seeing, touching, and playing it in person before making a purchase. When you visit a Bonners Music store, you can explore a wide selection of pianos, keyboards, guitars, and related products to help you make the perfect choice. Our friendly and knowledgeable staff are always on hand to help you if you have any questions. Experience this model firsthand at any of our stores listed below. Please note that the colour of the display model in our showroom may differ from what is shown on this page.

Eastbourne Guitar Store
Address:
Bonners Guitar Store, 9 Faraday Close Eastbourne East Sussex BN22 9BH
Telephone:
01323 639335In-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 ETA's
For accurate delivery information, please contact our sales team on sales@bonnersmusic.co.uk or call 01323 639335. As a guide, despatch times are detailed below.
Additional charges will be made for delivery of heavy items to some areas. Charges may also apply to upgrades including (but not limited to) timed deliveries, piano assembly, delivery of large items, and when matching deals from other retailers. If you are unsure about our delivery charges, please contact us.
In Stock Products
Products that are shown as in stock will be sent using our standard delivery service within 2 working days from when payment is received. This excludes piano deliveries with full installation - see below.
Pre-Order Products
Products which are shown as pre-order are not in stock, but can be ordered and reserved for you from the next available shipment. Order today to reserve your place in the queue! Call or email us for the latest lead times on pre-order products.
Digital Piano Deliveries:
We have many flexible delivery options for most delivery pianos, based on your location and whether you require it flat-packed, or fully assembled in your home. Digital piano delivery options are shown at checkout.
Piano Deliveries
If you purchase a piano which is supplied with full installation, we will contact you once your order is received to arrange a convenient delivery date & time. Delivery & installation is usually within 14 days, but often sooner. Call us for current lead times on pianos.
Digital Piano Deliveries For Self-Assembly
Click here to see our specific information relating to piano deliveries.
If you choose our courier delivery/flat pack delivery method, please be aware that with larger items such as digital pianos, the courier is not contracted to carry them up any steps or stairs. If there are stairs leading to the front door of the delivery address, or you live in an apartment which is not on pavement level, it is your responsibility to arrange transportation from the pavement level to the delivery address. In this instance, the delivery driver may, at their own discretion assist you in carrying the parcels to the delivery address, but they are not contracted nor obliged to do so.
Do you need delivery upstairs, or delivery at a specific time?
For some larger items which need to be delivered upstairs - including pianos, we offer a timed delivery service using our own van and drivers. This service is free on some items and chargeable on others. Call us on 01323 639335 to discuss your specific delivery requirements.
No-one at home?
Our courier will try and deliver your parcel(s) twice. After the second failed attempt, your goods will be returned to our warehouse. If you would like us to try and deliver them again, we will charge the delivery charges associated with your order again.
Delivery Surcharges For Larger Items
For some larger items, delivery surcharges may apply to the following areas: Scotland, Wales, Channel Islands, Isle Of Wight, Cornwall, Ireland, North Of England above Leeds. Call us on 01323 639335 to check before ordering.
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% interest 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% Finance 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% finance available on most purchases between £625 and £18,750. We also have some longer period (up to 36 months) Classic Credit APR 14.9% 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 Ltd acts as a credit broker and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. Bonners Ltd is authorised and regulated by the Financial Conduct Authority. Our registration number is 718966. Bonners Ltd is registered in England and Wales 1994113. Registered office 34 North St, Hailsham, East Sussex BN27 1DW.
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.
Not all products offered by Secure Trust Bank T/A V12 Retail Finance are regulated by the FCA
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.
If you're unsure which instrument or product is right for you, nothing compares to seeing, touching, and playing it in person before making a purchase. When you visit a Bonners Music store, you can explore a wide selection of pianos, keyboards, guitars, and related products to help you make the perfect choice. Our friendly and knowledgeable staff are always on hand to help you if you have any questions. Experience this model firsthand at any of our stores listed below. Please note that the colour of the display model in our showroom may differ from what is shown on this page.

Eastbourne Guitar Store
Address:
Bonners Guitar Store, 9 Faraday Close Eastbourne East Sussex BN22 9BH
Telephone:
01323 639335In-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 ETA's
For accurate delivery information, please contact our sales team on sales@bonnersmusic.co.uk or call 01323 639335. As a guide, despatch times are detailed below.
Additional charges will be made for delivery of heavy items to some areas. Charges may also apply to upgrades including (but not limited to) timed deliveries, piano assembly, delivery of large items, and when matching deals from other retailers. If you are unsure about our delivery charges, please contact us.
In Stock Products
Products that are shown as in stock will be sent using our standard delivery service within 2 working days from when payment is received. This excludes piano deliveries with full installation - see below.
Pre-Order Products
Products which are shown as pre-order are not in stock, but can be ordered and reserved for you from the next available shipment. Order today to reserve your place in the queue! Call or email us for the latest lead times on pre-order products.
Digital Piano Deliveries:
We have many flexible delivery options for most delivery pianos, based on your location and whether you require it flat-packed, or fully assembled in your home. Digital piano delivery options are shown at checkout.
Piano Deliveries
If you purchase a piano which is supplied with full installation, we will contact you once your order is received to arrange a convenient delivery date & time. Delivery & installation is usually within 14 days, but often sooner. Call us for current lead times on pianos.
Digital Piano Deliveries For Self-Assembly
Click here to see our specific information relating to piano deliveries.
If you choose our courier delivery/flat pack delivery method, please be aware that with larger items such as digital pianos, the courier is not contracted to carry them up any steps or stairs. If there are stairs leading to the front door of the delivery address, or you live in an apartment which is not on pavement level, it is your responsibility to arrange transportation from the pavement level to the delivery address. In this instance, the delivery driver may, at their own discretion assist you in carrying the parcels to the delivery address, but they are not contracted nor obliged to do so.
Do you need delivery upstairs, or delivery at a specific time?
For some larger items which need to be delivered upstairs - including pianos, we offer a timed delivery service using our own van and drivers. This service is free on some items and chargeable on others. Call us on 01323 639335 to discuss your specific delivery requirements.
No-one at home?
Our courier will try and deliver your parcel(s) twice. After the second failed attempt, your goods will be returned to our warehouse. If you would like us to try and deliver them again, we will charge the delivery charges associated with your order again.
Delivery Surcharges For Larger Items
For some larger items, delivery surcharges may apply to the following areas: Scotland, Wales, Channel Islands, Isle Of Wight, Cornwall, Ireland, North Of England above Leeds. Call us on 01323 639335 to check before ordering.
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% interest 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% Finance 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% finance available on most purchases between £625 and £18,750. We also have some longer period (up to 36 months) Classic Credit APR 14.9% 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 Ltd acts as a credit broker and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. Bonners Ltd is authorised and regulated by the Financial Conduct Authority. Our registration number is 718966. Bonners Ltd is registered in England and Wales 1994113. Registered office 34 North St, Hailsham, East Sussex BN27 1DW.
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.
Not all products offered by Secure Trust Bank T/A V12 Retail Finance are regulated by the FCA