• Home
  • KMA Audio Machines Guardian of the Wurm Distortion Pedal

KMA Audio Machines Guardian of the Wurm Distortion Pedal



Order now for delivery to you on Thu 26th May 2022.

3 available

to order online today

1 available

at our Guildford Store

More Information

FREE UK Delivery

Free & next day to most UK postcodes on in-stock items.

Earn 269 Loyalty Points

Earn one point for every £1 you spend.

Click and Collect

Available to collect by request.


    Product Description

    Boutique German pedal makers KMA Audio Machines combine German engineering and innovation to create truly awe inspiring effects. Each pedal is hand made in Berlin using only the finest components, delivering exceptional tone for a every player. With modern, innovative circuits, KMA is continuously looking forward, whilst drawing inspiration from legendary pedals from bygone eras.

    youtube video thumbnail

    Vintage Inspired

    The Guardian of the Wurm is the next evolution of KMA's top selling Wurm distortion pedal. Based on the circuit of the cult classic Boss HM-2 pedal, the Guardian of the Wurm is a "filthy box of doom" that effortless delivers that Swedish death-metal chainsaw sound! The addition of a built in Blackmer® VCA-based Noise Gate ensures that this face melting distortion stays clear and tight, with background noise and hiss kept to a minimum.

    Complete Tone Shaping

    The Guardian of the Wurm features a highly configurable 4-band Active EQ, with variable centre-frequencies allowing for complete tone shaping. Whether you need that classic heavily mid-scooped distortion, or a gritty, in your face "chainsaw" like sound, the Guardian of the Wurm has you covered. The Clean Blend feature helps preserve your natural core tone by allowing you to blend in your unprocessed signal. This is particularly useful when using the "Wurm" with an already overdriven amp as it retains your natural pick attack and keeps it sounding tight.

    Variable Clipping Styles

    The Guardian of the Wurm features three unique clipping styles which determine the amount of drive compression. Silicon (Si) mode delivers the original Boss HM-2 like compression, for rich harmonics and smooth leads. Asymmetric (A-S) mode increases the headroom, giving you more grit and bite by retaining the complex harmonics. Finally, OFF mode lifts the sound of the Diodes for a less compressed distortion with more clarity, which is perfect for baritone or bass guitars.

    Modern Features

    The Guardian of the Wurm is all about flexibility. The External Trigger Input allows you to control the built in Noise Gate from an external source which is perfect for those who like to experiment with noise gates in other creative ways. The built in FX-Loop is located between the distortion and noise gate sections, allowing you to plug in your favourite effects between them.


    • Powered by 9V PSU (Not Included)
    • (9V DC, Centre -, 2.1 mm, >150 mA max. current draw

    Written by Chris Toft

    Loyalty Points

    Earn loyalty points whenever you shop at Andertons. Points can be earned and used online, in store or over the phone: earn and use points however you choose to shop! No need to sign up - points are added automatically when you make a purchase! The more you shop, the more you save, so start earning points now!

    What are points worth?

    One point is worth a 1p discount, and there's no limit on the number of points used per purchase! For example, if you have 1000 points, you can redeem them for a £10 discount on any purchase.

    How many points will I earn when I shop?

    We display the number of points available for a product on the product's page on our website. Normally we'll give you one point for every pound you spend, but watch out for double and triple points deals for even more savings!


    Here at Andertons Music Co. we believe that we stock some of the best musical equipment in the world. That's why we want to make it as quick and easy as possible for you to get your order, safe and sound!

    We offer a wide range of delivery options to help fit around your busy lifestyle without compromise. This includes free, named-day delivery for most UK postcodes on orders over £99 which are in stock, Saturday & Sunday deliveries, and competitive delivery rates worldwide.

    Please note: Some UK postcodes including remote areas and Northern Ireland are subject to charges.

    You can find full details about the services we offer, including details on our international delivery charges, on our main delivery page. Click here to read more.