Skip to main content
MusicRadar MusicRadar The No.1 website for musicians
Sign in
  • View Profile
  • Sign out
  • Drums Week 25
  • Synths
  • Guitars
  • Guitar Pedals
  • Guitar Amps
  • Keyboards & Pianos
  • Controllers
  • Artist news
  • Drums
  • Software & Apps
  • More
    • Recording
    • DJ Gear
    • Acoustic Guitars
    • Bass Guitars
    • Tech
    • Tutorials
    • Reviews
    • Buying Guides
    • About Us
More
  • Santana on Beck
  • Friday, I'm in Love
  • Knopfler's 4-note secret
  • 95k+ free music samples
Don't miss these
Kirk Hammett plays his Mummy ESP onstage with Metallica. In the middle of this comp'd image is the Thinline custom Triplecaster Hammett commissioned then gifted to White. On the right, White plays his Fender Triplecaster with the yellow pickguard.
Artists Kirk Hammett orders up custom version of Jack White’s Triplecaster – and gets one for White, too
Kirk Hammett of Metallica wears a studded denim jacket as he plays live with his Mummy ESP signature guitar
Artists “Guitars should be played”: Kirk Hammett has been anonymously selling his guitars online
This composite image features Charlie Starr playing a TV Yellow Les Paul Junior on the left, while Metallica's Kirk Hammett plays his Greeny Les Paul Standard, and James Hetfield plays his his ESP Snakebyte.
Artists Blackberry Smoke’s Charlie Starr on that time he took Duane Allman’s '57 Goldtop to a Metallica show
The KHDK Electronics Digital Bath was co-developed with Deftones frontman Chino Moreno, who is pictured here in a white T-shirt and black trousers, performing at Lollapalooza 2024.
Artists KHDK teams up with Chino Moreno for a “melancholic” delay that promises an iconic Deftones tone
The Keeley Electronics Manis is a three-knob overdrive inspired by the Klon and is offered in gold, silver and black with red knobs.
Guitars Keeley Electronics’ Manis Overdrive remixes the Klon recipe for those who don’t like the original
Brandon Small of Metalocalypse fame in his studio with a black Ibanez Iceman – now fretless – that he is selling in his official Reverb store.
Artists Brendon Small of Dethklok is selling some crazy gear on Reverb – including a fretless Iceman
Orbit Culture's guitarists
Electric Guitars Orbit Culture show us their ESP guitars – and tell us why the EverTune bridge is a game-changer
James Hetfield in 1996
Artists “This is the new rock ’n’ roll Metallica. The riffs are greasier, bluesier, dirtier”: How Metallica changed on Load
Debbie Gough of Heriot demoes the new Jackson Pro Plus Metal Phase II Warrior on a darkened studio set.
Guitars Jackson adds Warrior, King V and Concert Bass to its limited edition Pro Plus Pure Metal range
Troy Van Leeuwen of Queens of the Stone Age plays a red/orange Gretsch onstage, and is framed by a triangle of yellow-green stagelights.
Artists “It was the most bizarre musical experience”: QOTSA’s Troy Van Leeuwen on playing Paris's Catacombs
Mesa/Boogie Mark IIC++: the super-rare holy grail metal amp used by the likes of Vivian Campbell and Metallica has been officially released by the Gibson-own amp brand.
Guitars ‘Crunch Berries’ are on the menu! Mesa/Boogie releases holy grail Mark IIC++ Metallica amp
Third Man Hardware x Black Mountain Roto-Echo: the roller wheel equipped delay pedal is a compact and performance-friendly stompbox that's available in black or limited edition white. Jack White has used it onstage and in the studio during the sessions for No Name.
Artists Jack White’s Third Man teams up with Black Mountain for the Roto-Echo, a delay controllable by foot
EarthQuaker Devices Rancho de la Luna Dirt Transmitter – the return of the OOP fuzz pedal marks 30-plus years of the Joshua Tree studio and comes with all-new artwork.
Guitars EarthQuaker Devices joins forces with Rancho de la Luna for the return of a lost fuzz classic
Gibson Tony Iommi Humbucker: the all-new humbucker, a reissue of its first-ever signature pickup.
Artists Gibson goes back to the beginning with reissue of its first-ever signature pickup for Black Sabbath icon Tony Iommi
Exodus Gary Holt
Bands "It might have been like 12 people there”: Exodus’ Gary Holt pulls zero punches in his new autobiography
  1. Guitars
  2. Guitar Pedals

Kirk Hammett and David Karon talk KHDK guitar pedals

News
By Michael Astley-Brown ( Total Guitar ) published 11 February 2016

Metallica man putting pedals to metal

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Introduction

Introduction

As they unleash KHDK Electronics upon unsuspecting guitarists across the globe, Metallica’s Kirk Hammett and industry pro David Karon reveal their plans to shake up the effects pedal world

In between making movies, headlining festivals and recording a new album, you’d think Metallica’s longtime lead guitarist Kirk Hammett would struggle to fit any more on his plate.

The pair made waves with Hammett’s signature Randall amps, but KHDK Electronics affords them complete creative control

Yet when old friend and industry vet David Karon suggested a new venture - a pedal company - Kirk jumped at the chance. First introduced through Anthrax’s Scott Ian, the pair had already made waves with Hammett’s signature Randall amps, but KHDK Electronics affords them complete creative control, and provides the keys to unlocking the “unholy sounds” inside Kirk’s head.

With three pedals already under their belt - Kirk’s signature Ghoul Screamer, the No 1 Overdrive and No 2 Clean Boost - Kirk and David gave us the lowdown on why KHDK has them so excited…

Page 1 of 6
Page 1 of 6
Kicking off KHDK

Kicking off KHDK

What made you want to start KHDK?

Kirk Hammett: “Well, it actually was not my idea to start a pedal company; it was the DK - Dave Karon - and we were just sitting around, talking about how much easier it is to do stuff these days because of the internet and computers and technology and whatnot, and all of a sudden, he said, ‘You know what? We should start a pedal company,’ and I said, ‘Good idea; let’s do it!’ [laughs]

I see it as another avenue of expression, and a good way to experiment with things

“It was along the lines of, ‘Let’s start a record company; people do it all the time!’ But when I agreed to start this pedal company, I realised that it’s not like a record company, and not a whole lot of people do it! [laughs]

“I see it as another avenue of expression, and a good way to experiment with things, and a good way to learn about other stuff, and I’m learning what the limits are and what limits can be broken, and we have some really super-cool ideas that we’re sitting on that will slowly come out, and I’m super, super-excited about it all. More excited than I ever expected to be, honestly.”

Page 2 of 6
Page 2 of 6
Ghoul gain

Ghoul gain

What was the thought process behind the Ghoul Screamer?

KH: “Well, I always thought that the Tube Screamer was great, and a classic sound, but after using one for 30-odd years or so, there have been other times where I’ve thought, ‘Wow, I wish I could get a little more bottom out of it,’ or, ‘if I could just compress it a little bit more for just this little situation,’ or, ‘if I could just get a little bit more of the Tube Screamer sound.’

“I really wanted to just open it up and try and expand the potential of it. And so we expanded every knob: we took the tone knob - added top, added middle, added bottom - we took the gain, and added some compression and ways to work with that. And so, basically, we added more to it.”

David Karon: “We increased a lot of the range of the pots - so, the gain pot has less gain in the minimum for more clean boost and more gain in the maximum. When you have the switches all up, it’s like a traditional 808 with high-end components, and then, when all the switches are down, the bass increases, the overdrive has more bottom-end, the highs widen, it sounds brighter.

“I’m sure that people out there are screaming, ‘Heresy! Why is he messing with such a classic sound?’

“The body switch is a mid-enhancer, so it makes it more present. And then the compression switch is like a headroom, so you have three versions of headroom: one being less, two and then three being the most. So, it’s to optimise the pushing of your tubes on your amp.”

KH: “I’m sure that people out there are screaming, ‘Heresy! Why is he messing with such a classic sound?’ I might be messing with a classic sound, but fucking hell, how are we gonna move forward if someone doesn’t cross the line somewhere?

“It’s like music: someone has to cross the line for it to get anywhere. Sometimes I feel like an anarchist, because I’m taking stuff and I’m asking Dave and our engineer Antonin [Salva], and saying, ‘Hey, well, can we do this?’ And they’ll say, ‘Well, we can do this,’ or, ‘If we do this, we’re gonna screw this up and won’t be able to do this’ and whatnot.”

Page 3 of 6
Page 3 of 6
No 1 pedal

No 1 pedal

Have you used the pedal with Metallica yet?

KH: “You know, we haven’t really toured since it came out, but I’ve been using it in rehearsals, and I plan to use it while we record… I want to use everything that we’re making to just mix the whole recording process up; I want to use this stuff to shake it all up and start it in a different place. I just want a new starting spot.”

What was the thinking behind the No 2 Clean Boost and No 1 Overdrive?

If you hook up the No 1 pedal and the Ghoul Screamer together, oh my god, it’s just next level

KH: “Something that’s always needed is a clean boost. Always. If you’re a guitar player in a band and a riff is coming up and you want it to be loud and heavy, step on that clean boost. You’re in a band, and your guitar solo’s coming up? Step on that boost. It’s like air: you need oxygen to breathe; when you’re in a band, you need a boost. [laughs]

“The distortion pedal is based on this obscure pedal that I found in Europe that was only made for eight months or so, and then the maker just stopped making it. And I can understand why: he probably didn’t sell any, because it’s so over-the-top and weird. I had been using this particular pedal for a while, and it was starting to show signs of breaking down, so it was imperative for us to design something along those lines.

“We made it a little bit quieter, a little bit more usable, a little bit more functional. I love how the distortion turned out; and if you hook up the No 1 pedal and the Ghoul Screamer together, oh my god, it’s just next level. Watch out, because it’s an unholy sound!”

Page 4 of 6
Page 4 of 6
Fuzz factor

Fuzz factor

What other products can we expect?

KH: “Well, I have a lot of great ideas, and I’m really afraid to mention them right now, because someone else might jump on top of them! So, at this point, I really can’t say very much, but without a doubt, I’m guaranteeing you that some of the stuff that’s going to be coming out in the next year or two is gonna be pretty different, radically different.”

We’ve got 15 different products in the works - I’m sending a couple of fuzz pedals out to Kirk today for testing

DK: “We’ve got 15 different products in the works - I’m sending a couple of fuzz pedals out to Kirk today for testing. We go through a lot of ideas. Our biggest limitation is staying analogue, so some of the ideas we’re still trying to achieve in an analogue format - we don’t want to jump into the digital world yet!”

We have to ask: is there a wah coming?

KH: “Well, of course! I mean, come on: look who you’re talking to! [laughs]”

You sent pedals out to the likes of Joe Duplantier, Dan Donegan and Rob Caggiano; why did you choose those players in particular to test them out?

DK: “Kirk and I are both just massive fans of Gojira, and they’re just such great guys to work with, and Joe has just got such an intricate, different approach to guitar playing, and Kirk’s great friends with him, so he was an immediate choice.

“Dan and Rob I’ve been working together for almost 15 years now, so they’re really great friends, very trusted ears for me that will be honest with whatever we’re doing and just say it like it is, and not just try to candy-coat anything. The honest voice is what we need, and they have really discerning taste for their tone.”

KH: “The great thing is that they’re just loving it. John 5 just shot me a text, and I said, ‘Hey bro, I’ll send you whatever you need.’ ’Cos he’s a good friend of mine, too. My goal is to outfit all my friends, for sure! [laughs]”

Page 5 of 6
Page 5 of 6
Building a legacy

Building a legacy

What are your ambitions for the company?

DK: “This is something we want to leave to our children - I mean, obviously, Kirk has a massive legacy - but he wants to leave this company as a legacy, as do I, and we have major plans: we’re looking at releasing at least a few more pedals in 2016. We have at least five that are potentially ready to go.”

I’m just really inspired, and hopefully through my inspiration and my excitement, it’ll catch on with other players

KH: “We’re all very inspired and very, very excited about this. I think it’s the first time you’ll see a pedal company actually being driven by an actual guitar player, like Tom Scholz and Rockman - I really don’t know of any other guitar players out there who are actually making pedals.

“I know there are a lot of guitar players out there making amps, there are a lot of guitar players out there making guitars and whatnot, and a lot of players out there endorsing stuff, but the fact that I’m making pedals, and we’re trying to just mix it all up, it’s fun for me and it’s super-cool, and Dave and I are really, really enjoying it.

“It’s a big surprise, and I’m just really inspired, and hopefully through my inspiration and my excitement, it’ll catch on with other players and we can just spread the good, good vibe.”

Page 6 of 6
Page 6 of 6
Michael Astley-Brown
Michael Astley-Brown
Social Links Navigation

Mike is Editor-in-Chief of GuitarWorld.com, in addition to being an offset fiend and recovering pedal addict. He has a master's degree in journalism, and has spent the past decade writing and editing for guitar publications including MusicRadar, Total Guitar and Guitarist, as well as a decade-and-a-half performing in bands of variable genre (and quality). In his free time, you'll find him making progressive instrumental rock under the nom de plume Maebe.

Stay up to date with the latest gear and tuition. image
Stay up to date with the latest gear and tuition.
Subscribe and save today!
More Info
Read more
Kirk Hammett plays his Mummy ESP onstage with Metallica. In the middle of this comp'd image is the Thinline custom Triplecaster Hammett commissioned then gifted to White. On the right, White plays his Fender Triplecaster with the yellow pickguard.
Kirk Hammett orders up custom version of Jack White’s Triplecaster – and gets one for White, too
Kirk Hammett of Metallica wears a studded denim jacket as he plays live with his Mummy ESP signature guitar
“Guitars should be played”: Kirk Hammett has been anonymously selling his guitars online
This composite image features Charlie Starr playing a TV Yellow Les Paul Junior on the left, while Metallica's Kirk Hammett plays his Greeny Les Paul Standard, and James Hetfield plays his his ESP Snakebyte.
Blackberry Smoke’s Charlie Starr on that time he took Duane Allman’s '57 Goldtop to a Metallica show
The KHDK Electronics Digital Bath was co-developed with Deftones frontman Chino Moreno, who is pictured here in a white T-shirt and black trousers, performing at Lollapalooza 2024.
KHDK teams up with Chino Moreno for a “melancholic” delay that promises an iconic Deftones tone
The Keeley Electronics Manis is a three-knob overdrive inspired by the Klon and is offered in gold, silver and black with red knobs.
Keeley Electronics’ Manis Overdrive remixes the Klon recipe for those who don’t like the original
Brandon Small of Metalocalypse fame in his studio with a black Ibanez Iceman – now fretless – that he is selling in his official Reverb store.
Brendon Small of Dethklok is selling some crazy gear on Reverb – including a fretless Iceman
Latest in Guitar Pedals
Boss PX-1 Plugout FX: the white compact series pedal has blue knobs, digital display, and is a platform for 16 digitally modelled Boss effects, one of which is available at a time.
A compact series stompbox you can turn into any one of 16 classic Boss effects? Meet the Plugout FX
Third Man Hardware x Black Mountain Roto-Echo: the roller wheel equipped delay pedal is a compact and performance-friendly stompbox that's available in black or limited edition white. Jack White has used it onstage and in the studio during the sessions for No Name.
Jack White’s Third Man teams up with Black Mountain for the Roto-Echo, a delay controllable by foot
Chase Bliss Lost + Found: the new compact offering from the boutique stompbox company is the brand's first multi-effects, and comes in a cool green enclosure with a range of dip-switches for more tweakability.
Chase Bliss invites you to rummage around the Lost + Found – a compact multi-FX pedal with 12 modes
JHS PEDALS
"He's not using a guitar amp. He's using a Tascam 424": JHS Pedals puts a Portastudio in a pedal to help you recreate Mk.gee's "elastic, lo-fi tones"
An Earthquaker Devices Easy Listening headphone amp on a desk
“With no smartphone app, no IR loader, and just a single knob for control, it does away with all the distractions”: Earthquaker Devices Easy Listening review
Peavey Decade pedal review
"If you're seeking a polished, smooth, modern distortion, this is most definitely not the stomp box for you": Peavey Decade preamp pedal review
Latest in News
Sebastian Bach performs on Day 1 of the Heavy Montreal festival at Parc Jean-Drapeau on August 6, 2016 in Montreal, Canada
“I could kick 'em right in the balls”: Ex-Skid Row man goes on a rant about Youtube armchair critics
Composer John Williams
“I never liked film music very much”: World famous film composer makes startling admission
Deals of the week
MusicRadar deals of the week: Here are the best Labor Day sales for musicians from across the internet
Josh Freese performs onstage with The Vandals during day 1 of Warped Tour at Shoreline Waterfront on July 26, 2025
“It wasn’t music that I really resonated with”: Josh Freese lifts the lid on his exit from the Foo Fighters
Zak Starkey and Axl Rose composite
“C’mon bro... It could generate $2M for teen cancer”: Zak Starkey pleads with Axl Rose to give the go-ahead for charity cover of Bolan classic
Don Felder plays his iconic white Gibson doubleneck electric guitar onstage. Note the double jack: that mod is crucial when playing Hotel California, which he surely is in this picture.
Don Felder on why he had to mod his white Gibson doubleneck to play the Eagles’ biggest hit – and how he got the idea from Chet Atkins

MusicRadar is part of Future plc, an international media group and leading digital publisher. Visit our corporate site.

  • About Us
  • Contact Future's experts
  • Terms and conditions
  • Privacy policy
  • Cookies policy
  • Advertise with us
  • Accessibility Statement
  • Careers

© Future Publishing Limited Quay House, The Ambury, Bath BA1 1UA. All rights reserved. England and Wales company registration number 2008885.

Please login or signup to comment

Please wait...