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Guitar Pedal Buying Guide: Genre by Genre
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The Ultimate HM-2 Distortion!
✓ In stock
Order before 9pm UK time for next-day dispatch!
✓ Free UK delivery!
Royal Mail 24-hour shipping as standard.
✓ 30-day hassle-free returns
Boost Guitar Pedals uses Royal Mail for all domestic deliveries and UPS for international deliveries.
UPDATE – As of 13th December 2024, we are
regrettably no longer able to ship to customers located within the EU or Northern Ireland, due to new GPSR regulations which make it prohibitively expensive for small businesses to operate in the zone.
UPDATE 2 – As of 10th April 2025, we are still shipping to the USA. Please note that due to the volatile political situation relating to tariffs, we may have to cease offering shipping here at short notice.
We offer free 24-hour tracked UK delivery on all orders over £150! Order before 9pm for next-working-day dispatch.
We offer 30-day hassle-free returns so you can pick the item you want safe in the knowledge that if it's not for you, we'll take it back and refund your order.
International deliveries are subject to additional import duties and VAT at your local rate. These charges are payable to the courier at time of delivery. Calculate how much you will need to pay here.
Please note that some orders may take longer to be processed before shipping during the busiest periods of the year.
Customers hold the right to return a product for a full refund if I am notified within 30 days of delivery.
If a product is delivered in a defective or damaged condition, please contact me immediately with details of your order.
To be eligible for a return, the item must be in the same condition
that you received it. It must also be in the original packaging.
Please note, the cost of return delivery is to be paid by the customer. This will be reimbursed if the item is shown to be faulty.
To complete a return, I require a receipt or proof of purchase. Please do not send any items back to the manufacturer, and please do not send any items to me without contacting me first.
Once I have confirmed that I will process your return, please send the item to:
Boost Guitar Pedals (returns)
84 Wolf Lane
Windsor
Berkshire
SL4 4YZ
United Kingdom
My first course of action for faulty items is to replace them like-for-like. If this is not possible, a full refund will be considered as an alternative.
If returned within the 30-day period, your refund will be processed and a credit will be applied to your credit card or original method of payment.
The customer is responsible for paying return shipping costs. Shipping costs are non-refundable unless a product is proven to be damaged or faulty upon delivery.
It is recommended that items should be returned using a trackable shipping service in case the item goes missing en route.
The KMA Machines Guardian Of The Wurm is the ultimate distortion pedal for those playing heavier genres, thanks to its 4-band active EQ, noise gate and built in effects loop.
Based on the Boss Heavy Metal HM-2, the Guardian Of The Wurm takes heavy rock and metal to new heights. In fact, it's perhaps the most tweakable pedals of its type.
And you don't need to be in a band with a name inspired by the occult to click with the Guardian Of The Wurm - the likes of Prince, Johnny Marr and David Gilmour used the HM-2 to great effect during their careers.
A key feature of the Guardian Of The Wurm is its extremely powerful EQ. The EQ-Style mode allows you to set the overall character: "HM-II" mode gives the classic high-mids sound; "KMA" mode has a wider, more balanced response; "Both" doubles up the tone stack for the best of both worlds.
Choose from "Si" for the original silicon HM-2 character; "A-S" uses asymmetric clipping to increase the headroom and adding more grit with complex harmonics; "Off" removes the diode clipping from the circuit, giving a much bolder, clearer tone ideal for bass or downtuned guitars.
The Clean Blend control is a fantastic addition for preserving your core tone. It's great for retaining pick attack and giving your crushing distortion sound some much-needed clarity by adding in some of the unprocessed signal.
The "Guardian" part pf the pedal, based on a high-performance Blackmer VCA, the Guardian Of The Wurm's noise gate is lightning fast and super-precise. It ensures that none of your performance is lost while the noise is removed from the equation. It's really great for tightening up your sound, too.
The Threshold control sets the level at which the noise gate kicks in, while an internal dip-switch changes the trigger source between pre-distortion, post-distortion, or pre-noise gate.
The effects loop operates between the distortion and noise gate. Add any effects pedal you like to the loop, or use it to place the noise gate in your amplifier's effects loop. There are many possibilities!
The Guardian Of The Wurm features two switching modes:
"Independent" mode allows both sides of the pedal to be activated separately using the Terror and Tame footswitches.
"Synced" mode allows the entire pedal to be activated using the Terror footswitch, while the noise gate can be added or removed as desired.
To switch modes, hold down both footswitches while connecting the power.