We get the scoop on the gear behind Mick Thomson’s and Jim Root’s brutal sound thanks to their signature guitars and 100-watt rock-boxes.
In Cedar Rapids, Iowa, on Mother’s Day 2015, Slipknot guitarists Mick Thomson and Jim Root took some time before their somewhat hometown show and hung with PG to talk about signature guitars, tube heads, and the handful off effects they need to punish arenas each night.
Mick Thomson is a creature of habit—give him a few of his Ibanez MTM signature guitars packed with his Seymour Duncan EMTY Blackout pickups and he’s a happy dude. Each one of his guitars features a mahogany body, maple neck, and rosewood fretboard.
As far as he’s concerned, the best guitar he has out on the road right now is his white-and-black “storm trooper” Ibanez MTM that’s kept tuned to dropped-B. According to Thomson, it’s perfect for rhythm work and can stand up against any other 6-string in his collection for leads. Nearly all of 2008’s All Hope is Gone and the bulk of the rhythm material for last year’s .5: The Gray Chapter was done with the storm trooper. For this run, the band is primarily using two tunings and he uses a different set of D’Addario EXL117 strings for each one. For dropped-A tunings, he goes with .011–.058 and for dropped-B tunings he goes with .012–.068. Thomson recently worked with Dunlop to create a custom Jazz III pick made of a graphite composite because he feels they’re slicker, harder, and doesn’t make any scraping or scratching sounds when they wear down.
This is #7’s backup to the storm trooper—his very first prototype he got for his signature line back in the early 2000s.
Thomson starts the night out with this Oakland Raiders-themed Ibanez MTM that’s tuned to dropped-A for “Sacrastrophe.”
Thomson’s newest signature model features a carbon-fiber cap on the body and headstock and is tuned to dropped-A.
All of Thomson’s Audio-Technica wireless packs on his guitars are protected by Trojan condoms to keep them from getting wet from water, beer, sweat, and blood.
Much like his guitars, Mick rocks only the gear with his name on it—for this tour, he’s been using two Rivera KR-7 heads. One head goes to front of house and the second head runs through a 1x12 iso cabinet with a Celestion G-12K-100 because it meshes well with the third channel of the KR-7 and allows more headroom giving more clarity to the drop-tuned notes.
The secret weapon of his amp setup is the Rivera RockCrusher because he runs the FOH signal through the unit allowing him and his tech to color and dial in the sound from room to room or venue to venue. In addition, the RockCrusher can emulate most speakers on the market making it an invaluable tool for Mick in the studio.
Thomson’s rack of effects is slim—but utilitarian. He only uses six effects plus a Voodoo Lab Pedal Power ISO-5 and Peterson Stomp Classic tuner. His noisemakers include a Maxon OD-820 Overdrive Pro for lead boosts, an Electro-Harmonix Bassballs that’s kicked on for “Disasterpiece,” an MXR Carbon Copy Delay for parts of “Vermillion,” a Death By Audio Fuzz War, and a custom-made octave fuzz created by Thomson’s tech Kevin Allen. Mick commissioned his tech to make the filthiest, gnarliest, most obnoxious-sounding fuzzbox possible because as the guitarist sees it, “the fuzz better fuck your sound up.” He uses the custom octave fuzz on parts of “Duality.”
His rackmounted gear includes Audio-Technica wireless units, a Furman power conditioner, a Boss GT-Pro, and a Dunlop Custom Shop DCR-2SR Cry Baby Rack Wah. Thomson uses the GT-Pro to mimic the vocal sounds he originally recorded on tracks like “Spit It Out,” “Surfacing,” “Prosthetics,” and others off their 1999 self-titled debut. He switched to the GT-Pro from the Boss GX-700 during the recording of All Hope is Gone because of the updated algorithms, added MIDI capabilities, and to preserve the 700’s life.
Tech Kevin Allen uses a Voodoo Lab Ground Control Pro backstage to do all of Thomson’s switching throughout a show.
Like his 6-string counterpart, Jim Root uses various body stylings of his signature Fender guitars that feature mahogany bodies, maple necks, rosewood fretboards—ebony for his Jazzmasters—single volume knob, and EMG pickups. All of his axes are equipped with Dunlop .011–.056 strings for dropped-A and .012–.058 for dropped-B tunings. And for guitar picks, #4 recently collaborated with Dunlop to customize a Jazz III nylon pick that is the shape of a Tortex III pick.
His newest signature guitar is a sandblasted Jazzmaster that he recently created with Fender. The company describes the process as “leaving the surface grain pattern wonderfully textured with parallel ruts and grooves in which the black grain-filler coat shows beneath the color finish coat.” Root commented that he feels the removal of some of the wood makes this particular Jazzmaster more resonant. This sig offset has an EMG 81 in the bridge and a 60 in the neck.
This signature model Jazzmaster is a flat-black model that is loaded with the EMG JH Het Set pickups that Root feels has more headroom and offers a more “rounder” saturation than the standard 81-60 pairing.
Jim’s favorite stage guitar has been his first signature Tele that was conceptualized with Fender in the early 2000s. The dual-humbucker, mahogany-bodied Telecaster has been used on every album and every tour since he received it nearly 10 years ago. Root hopes to convince Fender to do a limited run of relic’d copies of this guitar in the future.
His lone signature Strat has a matte silver finish with a patina copper pickguard. He currently uses this one the least because it is extra bright.
While he does a have a signature Orange head—#4 Jim Root Terror—he’s currently using a pair of Rockerverbs for his live sound. His main live amp is a Rockerverb 100 that runs into an isolated Orange 4x12 cab loaded with Celestion Vintage 30s that is close-mic’d with three Audio-Technica AT4050s.
His backup head is a Rockerverb 100 MKII.
Root’s batch of effects are fairly simple and straightforward as he has an old Boss NS-2 Noise Suppressor—he claims the updated circuitry and lead-free solder in the new versions are less desirable and impact his sound too much—an MXR Auto Q Wah, a Maxon AF-9 Auto Filter, a Maxon PT-9 Pro+ Phase Shifter, two MXR Carbon Copy Delays—each is set with varying decay and repeat lengths—an Electro-Harmonix Holy Grail Reverb, and an Electro-Harmonix Micro POG. A T-Rex FuelTank Classic powers his stomps.
His satellite board that sits out front onstage includes a Cry Baby controller for the rack-mounted wah, a third MXR Carbon Copy so he can create oscillating chaos, a Maxon FV10 Fuzz Elements Void, an MXR GT-OD for a backup dirt box, and a Dunlop JH1D Jimi Hendrix Signature Wah. He feels the Hendrix wah has a different vibe that is a bit more traditional sounding effect that harkens back to the earliest Vox models. The Hendrix wah sits on a G-Lab True Bypass Wah-Pad that allows Root to leave the wah half-cocked without having to ride the foot pedal.
This legendary vintage rack unit will inspire you to think about effects with a new perspective.
When guitarists think of effects, we usually jump straight to stompboxes—they’re part of the culture! And besides, footswitches have real benefits when your hands are otherwise occupied. But real-time toggling isn’t always important. In the recording studio, where we’re often crafting sounds for each section of a song individually, there’s little reason to avoid rack gear and its possibilities. Enter the iconic Eventide H3000 (and its massive creative potential).
When it debuted in 1987, the H3000 was marketed as an “intelligent pitch-changer” that could generate stereo harmonies in a user-specified key. This was heady stuff in the ’80s! But while diatonic harmonizing grabbed the headlines, subtler uses of this pitch-shifter cemented its legacy. Patch 231 MICROPITCHSHIFT, for example, is a big reason the H3000 persists in racks everywhere. It’s essentially a pair of very short, single-repeat delays: The left side is pitched slightly up while the right side is pitched slightly down (default is ±9 cents). The resulting tripling/thickening effect has long been a mix-engineer staple for pop vocals, and it’s also my first call when I want a stereo chorus for guitar.
The second-gen H3000S, introduced the following year, cemented the device’s guitar bona fides. Early-adopter Steve Vai was such a proponent of the first edition that Eventide asked him to contribute 48 signature sounds for the new model (patches 700-747). Still-later revisions like the H3000B and H3000D/SE added even more functionality, but these days it’s not too important which model you have. Comprehensive EPROM chips containing every patch from all generations of H3000 (plus the later H3500) are readily available for a modest cost, and are a fairly straightforward install.
In addition to pitch-shifting, there are excellent modulation effects and reverbs (like patch 211 CANYON), plus presets inspired by other classic Eventide boxes, like the patch 513 INSTANT PHASER. A comprehensive accounting of the H3000’s capabilities would be tedious, but suffice to say that even the stock presets get deliciously far afield. There are pitch-shifting reverbs that sound like fever-dream ancestors of Strymon’s “shimmer” effect. There are backwards-guitar simulators, multiple extraterrestrial voices, peculiar foreshadows of the EarthQuaker Devices Arpanoid and Rainbow Machine (check out patch 208 BIZARRMONIZER), and even button-triggered Foley effects that require no input signal (including a siren, helicopter, tank, submarine, ocean waves, thunder, and wind). If you’re ever without your deck of Oblique Strategies cards, the H3000’s singular knob makes a pretty good substitute. (Spin the big wheel and find out what you’ve won!)
“If you’re ever without your deck of Oblique Strategies cards, the H3000’s singular knob makes a pretty good substitute.”
But there’s another, more pedestrian reason I tend to reach for the H3000 and its rackmount relatives in the studio: I like to do certain types of processing after the mic. It’s easy to overlook, but guitar speakers are signal processors in their own right. They roll off high and low end, they distort when pushed, and the cabinets in which they’re mounted introduce resonances. While this type of de facto processing often flatters the guitar itself, it isn’t always advantageous for effects.
Effects loops allow time-based effects to be placed after preamp distortion, but I like to go one further. By miking the amp first and then sending signal to effects in parallel, I can get full bandwidth from the airy reverbs and radical pitched-up effects the H3000 can offer—and I can get it in stereo, printed to its own track, allowing the wet/dry balance to be revisited later, if needed. If a sound needs to be reproduced live, that’s a problem for later. (Something evocative enough can usually be extracted from a pedal-form descendant like the Eventide H90.)
Like most vintage gear, the H3000 has some endearing quirks. Even as it knowingly preserves glitches from earlier Eventide harmonizers (patch 217 DUAL H910s), it betrays its age with a few idiosyncrasies of its own. Extreme pitch-shifting exhibits a lot of aliasing (think: bit-crusher sounds), and the analog Murata filter modules impart a hint of warmth that many plug-in versions don’t quite capture. (They also have a habit of leaking black goo all over the motherboard!) It’s all part of the charm of the unit, beloved by its adherents. (Well, maybe not the leaking goo!)
In 2025, many guitarists won’t be eager to care for what is essentially an expensive, cranky, decades-old computer. Even the excitement of occasional tantalum capacitor explosions is unlikely to win them over! Fortunately, some great software emulations exist—Eventide’s own plugin even models the behavior of the Murata filters. But hardware offers the full hands-on experience, so next time you spot an old H3000 in a rack somewhere—and you’ve got the time—fire it up, wait for the distinctive “click” of its relays, spin the knob, and start digging.
A live editor and browser for customizing Tone Models and presets.
IK Multimedia is pleased to release the TONEX Editor, a free update for TONEX Pedal and TONEX ONE users, available today through the IK Product Manager. This standalone application organizes the hardware library and enables real-time edits to Tone Models and presets with a connected TONEX pedal.
You can access your complete TONEX library, including Tone Models, presets and ToneNET, quickly load favorites to audition, and save to a designated hardware slot on IK hardware pedals. This easy-to-use application simplifies workflow, providing a streamlined experience for preparing TONEX pedals for the stage.
Fine-tune and organize your pedal presets in real time for playing live. Fully compatible with all your previous TONEX library settings and presets. Complete control over all pedal preset parameters, including Global setups. Access all Tone Models/IRs in the hardware memory, computer library, and ToneNET Export/Import entire libraries at once to back up and prepare for gigs Redesigned GUI with adaptive resize saves time and screen space Instantly audition any computer Tone Model or preset through the pedal.
Studio to Stage
Edit any onboard Tone Model or preset while hearing changes instantly through the pedal. Save new settings directly to the pedal, including global setup and performance modes (TONEX ONE), making it easy to fine-tune and customize your sound. The updated editor features a new floating window design for better screen organization and seamless browsing of Tone Models, amps, cabs, custom IRs and VIR. You can directly access Tone Models and IRs stored in the hardware memory and computer library, streamlining workflow.
A straightforward drop-down menu provides quick access to hardware-stored Tone Models conveniently sorted by type and character. Additionally, the editor offers complete control over all key parameters, including FX, Tone Model Amps, Tone Model Cabs/IR/VIR, and tempo and global setup options, delivering comprehensive, real-time control over all settings.
A Seamless Ecosystem of Tones
TONEX Editor automatically syncs with the entire TONEX user library within the Librarian tab. It provides quick access to all Tone Models, presets and ToneNET, with advanced filtering and folder organization for easy navigation. At the same time, a dedicated auto-load button lets you preview any Tone Model or preset in a designated hardware slot before committing changes.This streamlined workflow ensures quick edits, precise adjustments and the ultimate flexibility in sculpting your tone.
Get Started Today
TONEX Editor is included with TONEX 1.9.0, which was released today. Download or update the TONEX Mac/PC software from the IK Product Manager to install it. Then, launch TONEX Editor from your applications folder or Explorer.
For more information and videos about TONEX Editor, TONEX Pedal, TONEX ONE, and TONEX Cab, visit:
www.ikmultimedia.com/tonexeditor
The luthier’s stash.
There is more to a guitar than just the details.
A guitar is not simply a collection of wood, wire, and metal—it is an act of faith. Faith that a slab of lumber can be coaxed to sing, and that magnets and copper wire can capture something as expansive as human emotion. While it’s comforting to think that tone can be calculated like a tax return, the truth is far messier. A guitar is a living argument between its components—an uneasy alliance of materials and craftsmanship. When it works, it’s glorious.
The Uncooperative Nature of Wood
For me it all starts with the wood. Not just the species, but the piece. Despite what spec sheets and tonewood debates would have you believe, no two boards are the same. One piece of ash might have a bright, airy ring, while another from the same tree might sound like it spent a hard winter in a muddy ditch.
Builders know this, which is why you’ll occasionally catch one tapping on a rough blank, head cocked like a bird listening. They’re not crazy. They’re hunting for a lively, responsive quality that makes the wood feel awake in your hands. But wood is less than half the battle. So many guitarists make the mistake of buying the lumber instead of the luthier.
Pickups: Magnetic Hopes and Dreams
The engine of the guitar, pickups are the part that allegedly defines the electric guitar’s voice. Sure, swapping pickups will alter the tonality, to use a color metaphor, but they can only translate what’s already there, and there’s little percentage in trying to wake the dead. Yet, pickups do matter. A PAF-style might offer more harmonic complexity, or an overwound single-coil may bring some extra snarl, but here’s the thing: Two pickups made to the same specs can still sound different. The wire tension, the winding pattern, or even the temperature on the assembly line that day all add tiny variables that the spec sheet doesn’t mention. Don’t even get me started about the unrepeatability of “hand-scatter winding,” unless you’re a compulsive gambler.
“One piece of ash might have a bright, airy ring, while another from the same tree might sound like it spent a hard winter in a muddy ditch.”
Wires, Caps, and Wishful Thinking
Inside the control cavity, the pots and capacitors await, quietly shaping your tone whether you notice them or not. A potentiometer swap can make your volume taper feel like an on/off switch or smooth as an aged Tennessee whiskey. A capacitor change can make or break the tone control’s usefulness. It’s subtle, but noticeable. The kind of detail that sends people down the rabbit hole of swapping $3 capacitors for $50 “vintage-spec” caps, just to see if they can “feel” the mojo of the 1950s.
Hardware: The Unsung Saboteur
Bridges, nuts, tuners, and tailpieces are occasionally credited for their sonic contributions, but they’re quietly running the show. A steel block reflects and resonates differently than a die-cast zinc or aluminum bridge. Sloppy threads on bridge studs can weigh in, just as plate-style bridges can couple firmly to the body. Tuning machines can influence not just tuning stability, but their weight can alter the way the headstock itself vibrates.
It’s All Connected
Then there’s the neck joint—the place where sustain goes to die. A tight neck pocket allows the energy to transfer efficiently. A sloppy fit? Some credit it for creating the infamous cluck and twang of Fender guitars, so pick your poison. One of the most important specs is scale length. A longer scale not only creates more string tension, it also requires the frets to be further apart. This changes the feel and the sound. A shorter scale seems to diminish bright overtones, accentuating the lows and mids. Scale length has a definite effect on where the neck joins the body and the position of the bridge, where compromises must be made in a guitar’s overall design. There are so many choices, and just as many opportunities to miss the mark. It’s like driving without a map unless you’ve been there before.
Alchemy, Not Arithmetic
At the end of the day, a guitar’s greatness doesn’t come from its spec sheet. It’s not about the wood species or the coil-wire gauge. It’s about how it all conspires to either soar or sink. Two guitars, built to identical specs, can feel like long-lost soulmates or total strangers. All of these factors are why mix-and-match mods are a long game that can eventually pay off. But that’s the mystery of it. You can’t build magic from a parts list. You can’t buy mojo by the pound. A guitar is more than the sum of its parts—it’s a sometimes unpredictable collaboration of materials, choices, and human touch. And sometimes, whether in the hands of an experienced builder or a dedicated tinkerer, it just works.
Two Iconic Titans of Rock & Metal Join Forces for a Can’t-Miss North American Trek
Tickets Available Starting Wednesday, April 16 with Artist Presales
General On Sale Begins Friday, April 18 at 10AM Local on LiveNation.com
This fall, shock rock legend Alice Cooper and heavy metal trailblazers Judas Priest will share the stage for an epic co-headlining tour across North America. Produced by Live Nation, the 22-city run kicks off September 16 at Mississippi Coast Coliseum in Biloxi, MS, and stops in Toronto, Phoenix, Los Angeles, and more before wrapping October 26 at The Cynthia Woods Mitchell Pavilion in The Woodlands, TX.
Coming off the second leg of their Invincible Shield Tour and the release of their celebrated 19th studio album, Judas Priest remains a dominant force in metal. Meanwhile, Alice Cooper, the godfather of theatrical rock, wraps up his "Too Close For Comfort" tour this summer, promoting his most recent "Road" album, and will have an as-yet-unnamed all-new show for this tour. Corrosion of Conformity will join as support on select dates.
Tickets will be available starting Wednesday, April 16 at 10AM local time with Artist Presales. Additional presales will run throughout the week ahead of the general onsale beginning Friday, April 18 at 10AM local time at LiveNation.comTOUR DATES:
Tue Sep 16 – Biloxi, MS – Mississippi Coast Coliseum
Thu Sep 18 – Alpharetta, GA – Ameris Bank Amphitheatre*
Sat Sep 20 – Charlotte, NC – PNC Music Pavilion
Sun Sep 21 – Franklin, TN – FirstBank Amphitheater
Wed Sep 24 – Virginia Beach, VA – Veterans United Home Loans Amphitheater
Fri Sep 26 – Holmdel, NJ – PNC Bank Arts Center
Sat Sep 27 – Saratoga Springs, NY – Broadview Stage at SPAC
Mon Sep 29 – Toronto, ON – Budweiser Stage
Wed Oct 01 – Burgettstown, PA – The Pavilion at Star Lake
Thu Oct 02 – Clarkston, MI – Pine Knob Music Theatre
Sat Oct 04 – Cincinnati, OH – Riverbend Music Center
Sun Oct 05 – Tinley Park, IL – Credit Union 1 Amphitheatre
Fri Oct 10 – Colorado Springs, CO – Broadmoor World Arena
Sun Oct 12 – Salt Lake City, UT – Utah First Credit Union Amphitheatre
Tue Oct 14 – Mountain View, CA – Shoreline Amphitheatre
Wed Oct 15 – Wheatland, CA – Toyota Amphitheatre
Sat Oct 18 – Chula Vista, CA – North Island Credit Union Amphitheatre
Sun Oct 19 – Los Angeles, CA – Kia Forum
Wed Oct 22 – Phoenix, AZ – Talking Stick Resort Amphitheatre
Thu Oct 23 – Albuquerque, NM – Isleta Amphitheater
Sat Oct 25 – Austin, TX – Germania Insurance Amphitheater
Sun Oct 26 – Houston, TX – The Cynthia Woods Mitchell Pavilion
*Without support from Corrosion of Conformity