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.
Get premium spring reverb tones in a compact and practical format with the Carl Martin HeadRoom Mini. Featuring two independent reverb channels, mono and stereo I/O, and durable metal construction, this pedal is perfect for musicians on the go.
The Carl Martin HeadRoom Mini is a digital emulation of the beloved HeadRoom spring reverb pedal, offering the same warm, natural tone—plus a little extra—in a more compact and practical format. It delivers everything from subtle room ambiance to deep, cathedral-like reverberation, making it a versatile addition to any setup.
With two independent reverb channels, each featuring dedicated tone and level controls, you can easily switch between two different reverb settings - for example, rhythm and lead. The two footswitches allow seamless toggling between channels or full bypass.
Unlike the original HeadRoom, the Mini also includes both mono and stereo inputs and outputs, providing greater flexibility for stereo rigs. Built to withstand the rigors of live performance, it features a durable metal enclosure, buffered bypass for signal integrity, and a remote jack for external channel switching.
Key features
- Two independent reverb channels with individual tone and level controls
- Mono and stereo I/O for versatile routing options
- Buffered bypass ensures a strong, clear signal
- Rugged metal construction for durability
- Remote jack for external channel switching
- Compact and pedalboard-friendly design
HeadRoom Mini brings premium spring reverb tones in a flexible and space-savingformat—perfect for any musician looking for high-quality, studio-grade reverb on the go.
You can purchase HeadRoom Mini for $279 directly from carlmartin.com and, of course, also from leading music retailers worldwide.
For more information, please visit carlmartin.com.
Designed to preserve Jazzmaster charm while eliminating unwanted noise, these pickups combine classic aesthetics with cutting-edge technology.
Designed and crafted by SeymourDuncan’s VP of Engineering Kevin Beller, these Jazzmaster pickups employ a patent-pending triple-coil system. With two outer coils canceling hum while an inner coil captures the unmistakable Jazzmaster sound, they offer pure, authentic vintage tone with plenty of punch and warmth, but with absolutely no hum.
Plus, the visible Alnico 5 pole pieces maintain the classic Jazzmaster look, so you get hum-free sound with an unaltered, vintage feel.
Enjoy the classic offset sound with a warm, punchy Jazzmaster neck tone and a bright and tight Jazzmaster® bridge sound with plenty of snap. Our Vintage Jazzmaster Silencer pickups are a drop-in replacement for any Jazzmaster®-sized pickups. Perfect for surf-inspired riffs, shimmering indie textures, modern pedal-driven explorations, and more, the Seymour Duncan Vintage Jazzmaster® Silencer pickups maintain bold presence without interference—just pure sonic clarity.
The Vintage Jazzmaster Silencer is a noiseless pickup that retains the bright, punchy neck tone and tight, snappy bridge sound that defines the Jazzmaster. Clean or overdriven, the Vintage Jazzmaster Silencer's vintage-voiced tone is perfect for shimmering indie textures, surf-inspired riffs, and modern pedal-driven explorations. No more hum holding you back—just the pure, classic Jazzmaster® tone you love.
The Hot Jazzmaster Silencer neck pickup has a crisp, full-bodied tone, adding extra warmth in the low end, while the bridge pickup brings sharp definition and sustain for solos that cut through any mix. Designed as a drop-in replacement for any Jazzmaster-sized pickups, this noiseless set lets you dive into gritty surf riffs, glimmering melodies, grungy fuzzed-out rock, reverb-drenched shoegaze, and beyond. With boosted output and zero hum, it’s everything you love about the Jazzmaster, amped up.
The Hot Jazzmaster Silencer pickups offer iconic Jazzmaster tone with powerful output and zero hum. Their patent-pending triple-coil design cuts unwanted noise while enhancing the rich, gritty Jazzmaster sound. Enjoy clear, punchy highs and warm, solid lows, perfect for distortion or clean tones. Get the classic Jazzmaster sound with boosted output—without the hum.
Kirk Hammett’s Top Three Guitars (Yes, Greeny Is One of Them)
Photo courtesy of The Collection: Kirk Hammett, Gibson Publishing
In a lavish new coffee table book from Gibson, The Collection: Kirk Hammett, Metallica’s lead guitarist shares some of his most spectacular vintage instruments and the stories that go with them, as well as his love of Hawaii.
Together with Nathaniel, we’re decoding our favorite eras of the Edge’s tones—from his early Memory Man days through his expanding delay rack rig, into his 1990s Achtung Baby sounds, and all the way through to his Sphere rig. How does he get those amazing delay tones? And what are those cool picks he uses?
There’s a good chance that if you’re a guitar fan, you’ve seen Nathaniel Murphy’s gear demos—either on his Instagram account, where he goes by @zeppelinbarnatra, or on the Chicago Music Exchange page. His solo arrangements of classic tunes display his next-level technique and knack for clever arranging, and he makes our jaws drop every time he posts. When we learned that the Irish guitarist is a huge fan of U2’s The Edge, we knew he had to be our expert for this episode.
Together with Nathaniel, we’re decoding our favorite eras of the Edge’s tones—from his early Memory Man days through his expanding delay rack rig, into his 1990s Achtung Baby sounds, and all the way through to his Sphere rig. How does he get those amazing delay tones? And what are those cool picks he uses?