Titan tonal technician Kurt Ballou and sledgehammering bassist Nate Newton detail the chiseling tools they use to carve their colossal sound.
Kurt Ballou takes tone very seriously. He’s been on the leading edge of aggressive guitar sounds since 1990, and Converge’s fourth album, 2001’s Jane Doe, is still seen as a game-changing release, with its ferocious performances and masterful production. His sonic temple, God City Studio, is the destination for artists looking to make their rawest, heaviest, brutalist work. Ballou has even developed a gear brand (God City Instruments) that includes guitars, pedals, and pickups, all in the pursuit of turning ideas into art.
During our conversation before Converge’s sold-out performance at Nashville’s Basement East on May 22nd, Ballou dove into his Line 6 Helix spice rack and shared how 30 plus years as a guitarist and in-demand producer have informed his guitar-design philosophy. Plus, he detailed why his goal is to get to a place where “gear doesn’t matter.” And then, longtime bassist Nate Newton joined the fun by showing off his “Riffblaster” setup and how a special P-Bass helps him honor a dear friend.
Brought to you by D’Addario String Finder.
Construction Zone
For this headlining Converge run, Kurt took to the road with a pair of his own God City Instruments shred sticks. This one is the Constructivist model that has a body shape Kurt has been employing for over a decade. This current iteration has an ash body, roasted maple neck (with bolt-on assembly and C profile), ebony fretboard with cream binding, a Graph Tech nut, and comes loaded with a set of GCI’s Soap Jammers that are stacked alnico 5 humbuckers (10k bridge output/7k neck output). Ballou describes the Soap Jammers as “being high-output humbuckers that have the midrange push of a P-90 that still chugga chuggas like a humbucker.” He’s been using D’Addario strings for over 20 years and has been loyal to the NYXLs since they came out. He currently prefers the Medium Top/Extra Heavy Bottom set (.011–.056) and bludgeons them with D’Addario Duragrip Yellow (light/medium) picks.
Rock 'n' Roll Machine
Here is Kurt’s single-pickup GCI Craftsman that has a chambered mahogany body paired with a wenge top, a maple neck with set-neck construction, wenge fretboard with cream binding, Graph Tech nut and PM-8593 bridge, and it screams—thanks to the high-output GCI Slug Jammer humbucker that has a ceramic magnet and 13k resistance.
Ballou adds that “It’s a beautiful guitar that I just love to play. This is my favorite—just a basic rock ’n’ roll machine, and I use it the most for writing and recording Converge stuff.”
A Floor Smorgasbord
Converge would love to tour with stacks of gear, but they also live in the real world. They understand the compromise a modern hardcore band must make to pull off shows to their high standard, while also staying in the black, so for a few years Kurt has turned to the Line 6 Helix. He says it gives him a consistent, reliable sound each night that can be stored as a carry-on. Another perk is that his setup is in a stereo configuration, and the Helix’s direct-out function allows him to run front-of-house a stereo signal without having to worry about miking cabs (and possible phasing issues) that inevitably happen when mics and cabs get bumped and moved during Converge’s chaotic performances.
For these “Converge Classic”** headlining shows, Ballou operates the Helix in stompbox mode with a “Kvrt Preset V6.” Some of the pieces of the puzzle include a Centaur-style distortion, two separate noise gates, a Tycoctavia Fuzz, a Dual Pitch setting, Ping Pong (turning on stereo delay and reverb at the same time), and a Searchlights reverb patch. All of these are engaged and omitted by Ballou as if they were pedals on a standard board. He does use a phase looper for the song “Eye of the Quarrel” that allows him to play both guitar parts featured on it. His amps are based on modelings chasing a Diezel (Das Benzin Mega) and PRS Archon.
Worth noting that Ballou's grievances on the Helix were addressed by Ben Adrian of Line 6. Here's what he had to say: The gripes Kurt had with the unit can be resolved by issuing an update a while back, the tuner got a "Trails on/off" control, which allows delay, reverb, and looper audio to pass when the tuner is engaged. Also, with an update, "Command Center" was implemented a while back.This allows almost any function to be assigned to any switch in stomp mode. This includes all the controls for the looper.
(**Converge did an album with Chelsea Wolfe in 2021 called Bloodmoon: I. That included the standard four-piece Converge lineup but then added Wolfe, Stephen Brodsky, and Ben Chisholm. They toured as a seven-piece band, then Ballou had his Helix in snapshot mode that had several changes and settings moved automatically by the unit. The band now jokingly refers to their regular quartet as “Converge Classic.”)
Mighty Minis
Rather than employ the Helix’s IR technology, Ballou runs out of the Helix to a pair of Quilter Overdrive 202 heads.
Cat Power
Those Quilters then power a couple of Bad Cat 4x12s filled with Celestion Vintage 30s, giving Kurt all the stage volume he can handle.
Meet Mr. Riffblaster
Nate Newton has been the Converge bassist since 1998, and has always stayed true to the Fender Precision bass. He was gifted this green P from Fender, and modded it by adding in his signature Lace Riffblaster that the company says utilizes “the power of ceramic magnets to create the perfect balance of extreme power and articulation.” He uses Ernie Ball Regular Slinky Bass strings and green D’Addario Duralin Precision picks (medium).
In the Stream of Caleb Scofield
Newton’s other main gig since 2018 has been filling the void of Cave In bassist Caleb Scofield who tragically passed away five years ago. To honor their fallen brother, Cave In has kept Scofield’s P in their gear collection for Newton to use on Cave In recordings and tours. He has it with him on the Converge tour because once their run ended, he met the Cave In crew out in Colorado for their tour behind 2022’s Heavy Pendulum. Newton put in a set of his Lace Riffblaster pickups and noted during the Rundown that “it’s the best-sounding P-Bass” he’s ever played, and, for what it means to play this bass in Scofield’s spot: “It’s a weird thing, especially playing the older songs and using this bass. In a twisted way, it kind of feels like hanging out with Caleb. It feels like he’s there with us, and it’s an honor to play this bass in that band. I cherish it.”
Slim and Husky
For years Newton has plugged into this Orange AD200B Mk3 that pumps out 200 watts, thanks to four KT88 power tubes. It runs into an old Ampeg 8x10 cabinet. A Quilter Bass Block 802 rides as a backup for Converge, but takes the spotlight when he plays with Cave In.
Nate Newton's Pedalboard
The condensed stompbox station still shifts tectonic plates, in large part because of the Nunez Tetra-Fet Drive always being on with Converge. It takes the AD200 from a rumbler to molten-lava erupter. Both the Dunlop CBM105Q Cry Baby Bass Mini Wah and DOD Rubberneck Analog Delay are rarely used with Converge, but both get plenty of usage for Cave In sets. The Shift-Line A+ CabZone Bass sends the signal to front-of-house and offers 10 power amp emulations for additional shaping. The TC Electronic PolyTune keeps his Ps in check, and everything rides tight and tidy on a Pedaltrain Nano+ platform.
Shop Converge's Rig
- Quilter Labs Overdrive 202 200-watt Head
- Line 6 Helix Guitar Multi-effects Floor Processor
- Fender American Professional II Precision Bass V
- Orange AD200B MK 3 200-watt Bass Head
- DOD Rubberneck Analog Delay Pedal with Tap Tempo
- Dunlop CBM105Q Cry Baby Mini Bass Wah Pedal
- TC Electronic PolyTune 3 Polyphonic LED Guitar Tuner Pedal with Buffer
- Rig Rundown: Djunah ›
- Rig Rundown: Code Orange's Reba Meyers ›
- Pro Pedalboards 2022! ›
- Converge: Kurt Ballou’s Second Nature ›
The two-in-one “sonic refractor” takes tremolo and wavefolding to radical new depths.
Pros: Huge range of usable sounds. Delicious distortion tones. Broadens your conception of what guitar can be.
Build quirks will turn some users off.
$279
Cosmodio Gravity Well
cosmod.io
Know what a wavefolder does to your guitar signal? If you don’t, that’s okay. I didn’t either until I started messing around with the all-analog Cosmodio Instruments Gravity Well. It’s a dual-effect pedal with a tremolo and wavefolder, the latter more widely used in synthesis that , at a certain threshold, shifts or inverts the direction the wave is traveling—in essence, folding it upon itself. Used together here, they make up what Cosmodio calls a sonic refractor.
Two Plus One
Gravity Well’s design and control set make it a charm to use. Two footswitches engage tremolo and wavefolder independently, and one of three toggle switches swaps the order of the effects. The two 3-way switches toggle different tone and voice options, from darker and thicker to brighter and more aggressive. (Mixing and matching with these two toggles yields great results.)
The wavefolder, which has an all-analog signal path bit a digitally controlled LFO, is controlled by knobs for both gain and volume, which provide enormous dynamic range. The LFO tremolo gets three knobs: speed, depth, and waveform. The first two are self-explanatory, but the latter offers switching between eight different tremolo waveforms. You’ll find standard sawtooth, triangle, square, and sine waves, but Cosmodio also included some wacko shapes: asymmetric swoop, ramp, sample and hold, and random. These weirder forms force truly weird relationships with the pedal, forcing your playing into increasingly unpredictable and bizarre territories.
This is all housed in a trippy, beautifully decorated Hammond 1590BB-sized enclosure, with in/out, expression pedal, and power jacks. I had concerns about the durability of the expression jack because it’s not sealed to its opening with an outer nut and washer, making it feel more susceptible to damage if a cable gets stepped on or jostled near the connection, as well as from moisture. After a look at the interior, though, the build seems sturdy as any I’ve seen.
Splatterhouse Audio
Cosmodio’s claim that the refractor is a “first-of-its-kind” modulation effect is pretty grand, but they have a point in that the wavefolder is rare-ish in the guitar domain and pairing it with tremolo creates some pretty foreign sounds. Barton McGuire, the Massachusetts-based builder behind Cosmodio, released a few videos that demonstrate, visually, how a wavefolder impacts your guitar’s signal—I highly suggest checking them out to understand some of the principles behind the effect (and to see an ’80s Muppet Babies-branded keyboard in action.)
By folding a waveform back on itself, rather than clipping it as a conventional distortion would, the wavefolder section produces colliding, reflecting overtones and harmonics. The resulting distortion is unique: It can sound lo-fi and broken in the low- to mid-gain range, or synthy and extraterrestrial when the gain is dimed. Add in the tremolo, and you’ve got a lot of sonic variables to play with.
Used independently, the tremolo effect is great, but the wavefolder is where the real fun is. With the gain at 12 o’clock, it mimics a vintage 1x10 tube amp cranked to the breaking point by a splatty germanium OD. A soft touch cleans up the signal really nicely, while maintaining the weirdness the wavefolder imparts to its signal. With forceful pick strokes at high gain, it functions like a unique fuzz-distortion hybrid with bizarre alien artifacts punching through the synthy goop.
One forum commenter suggested that the Gravity Well effect is often in charge as much the guitar itself, and that’s spot on at the pedal's extremes. Whatever you expect from your usual playing techniques tends to go out the window —generating instead crumbling, sputtering bursts of blubbering sound. Learning to respond to the pedal in these environments can redefine the guitar as an instrument, and that’s a big part of Gravity Well’s magic.
The Verdict
Gravity Well is the most fun I’ve had with a modulation pedal in a while. It strikes a brilliant balance between adventurous and useful, with a broad range of LFO modulations and a totally excellent oddball distortion. The combination of the two effects yields some of the coolest sounds I’ve heard from an electric guitar, and at $279, it’s a very reasonably priced journey to deeply inspiring corners you probably never expected your 6-string (or bass, or drums, or Muppet Babies Casio EP-10) to lead you to.
Does the type of finish on an electric guitar—whether nitro, poly, or oil and wax—really affect its tone?
There’s an allure to the sound and feel of a great electric guitar. Many of us believe those instruments have something special that speaks not just to the ear but to the soul, where every note, every nuance feels personal. As much as we obsess over the pickups, wood, and hardware, there’s a subtler, more controversial character at play: the role of the finish. It’s the shimmering outer skin of the guitar, which some think exists solely for protection and aesthetics, and others insist has a role influencing the voice of the instrument. Builders pontificate about how their choice of finishing material may enhance tone by allowing the guitar to “breathe,” or resonate unfettered. They throw around terms like plasticizers, solids percentages, and “thin skin” to lend support to their claims. Are these people tripping? Say what you will, but I believe there is another truth behind the smoke.
It’s the shimmering outer skin of the guitar, which some think exists solely for protection and aesthetics, and others insist has a role influencing the voice of the instrument. Builders pontificate about how their choice of finishing material may enhance tone by allowing the guitar to “breathe,” or resonate unfettered. They throw around terms like plasticizers, solids percentages, and “thin skin” to lend support to their claims. Are these people tripping? Say what you will, but I believe there is another truth behind the smoke.
Nitrocellulose lacquer, or “nitro,” has long been the finish of choice for vintage guitar buffs, and it’s easy to see why. Used by Fender, Gibson, and other legendary manufacturers from the 1950s through the 1970s, nitro has a history as storied as the instruments it’s adorned. Its appeal lies not just in its beauty but in its delicate nature. Nitro, unlike some modern finishes, can be fragile. It wears and cracks over time, creating a visual patina that tells the story of every song, every stage, every late-night jam session. The sonic argument goes like this: Nitro is thin, almost imperceptible. It wraps the wood like silk. The sound is unhindered, alive, warm, and dynamic. It’s as if the guitar has a more intimate connection between its wood and the player's touch. Of course, some call bullscheiße.
In my estimation, nitro is not just about tonal gratification. Just like any finish, it can be laid on thick or thin. Some have added flexibility agents (those plasticizers) that help resist damage. But as it ages, old-school nitro can begin to wear and “check,” as subtle lines weave across the body of the guitar. And with those changes comes a mellowing, as if the guitar itself is growing wiser with age. Whether a tonal shift is real or imagined is part of the mystique, but it’s undeniable that a nitro-finished guitar has a feel that harkens back to a romantic time in music, and for some that’s enough.
Enter the modern era, and we find a shift toward practicality—polyurethane and polyester finishes, commonly known as “poly.” These finishes, while not as romantic as nitro, serve a different kind of beauty. They are durable, resilient, and protective. If nitro is like a delicate silk scarf, poly is armor—sometimes thicker, shinier, and built to last. The fact that they reduce production times is a bonus that rarely gets mentioned. For the player who prizes consistency and durability, poly is a guardian. But in that protection, some say, comes a price. Some argue that the sound becomes more controlled, more focused—but less alive. Still, poly finishes have their own kind of charm. They certainly maintain that showroom-fresh look, and to someone who likes to polish and detail their prized possessions, that can be a big plus.
“With those changes comes a mellowing, as if the guitar itself is growing wiser with age.”
For those seeking an even more natural experience, oil and wax finishes offer something primal. These finishes, often applied by hand, mostly penetrate the wood as much as coating it, leaving the guitar’s surface nearly bare. Proponents of oil and/or wax finishes say these materials allow the wood to vibrate freely, unencumbered by “heavy” coatings. The theory is there’s nothing getting in the way—sort of like a nudist colony mantra. Without the protection of nitro or poly, these guitars may wear more quickly, bearing the scars of its life more openly. This can be seen as a plus or minus, I imagine.
My take is that finishes matter because they are part of the bond we have with our instruments. I can’t say that I can hear a difference, and I think a myth has sprouted from the acoustic guitar world where maybe you can. Those who remove their instrument’s finish and claim to notice a difference are going on memory for the comparison. Who is to say every component (including strings) went back together exactly the same? So when we think about finishes, we’re not just talking about tone—we’re thinking about the total connection between musician and instrument. It’s that perception that makes a guitar more than just wood and wire. The vibe makes it a living, breathing part of the music—and you.
Featuring a preamp and Dynamic Expansion circuit for punch and attack, plus switchable amp simulations.
"Like a missile seeking its target, Heatseeker will give you the explosive sound of rock! Inspired directly from the gear setup used by Angus Young,it features the most important sonic elements to match the tone of the short-pants-rock-God.
It’s no secret that a major role to his sound, along with the Marshall-brick walls, played one of the first wireless systems for guitar that quickly became a classic among guitar greats, the Schaffer Vega Diversity System."
The preamp along with the Dynamic Expansion circuit found in the wireless transmitter/receiver gave it its distinct sound. Besides boosting the signal, the preamp tightens up lower frequencies and slightly accentuates mid frequencies while the Dynamic Expansion circuit enhances the dynamic response and harmonics of the signal giving punch and attack to ensure that it will cut through the mix. Instead of opting for a prefix setting for the Dynamic Expansion circuit as found in the original unit, we have re-imagined our version with the enhanced knob on the Heatseeker to have more control over the guitar tone’s dynamic response. Setting it around 10 o‘clock is a good starting point to add some extra sparkle. Max it out to bring back to life even the most dull and colorless sounds.
Utilizing an all-analog JFET circuit, running on 27 volts via an internal voltage boost (DO NOT plug higher than 9V DC power supply), we have captured the tone and feel of three British tube amplifiers, synonymous with the sound of rock and roll, with an excellent clean-to-mean dynamic response. With the flip of a toggle switch, you can capture the sound and feel of a JTM45, 1959 Super Lead, or JMP 2203. A smart switching circuit follows the signal path and respective gain stages tuned for each amp and combines them with an actual Marshall style EQ and power amp simula-tion circuit for thundering rock tones. Angus Young usually plugs into Channel 1 or High Treble input of his JTM45s and Super Leads so we opted for that sound when we started visualizing Heatseeker on the drawing board. We have also extended the range of the presence control beyond the original so that the user will be able to match the pedal to any amp or gear setup. The master volume offers plenty of output so that you can also use the pedal as a preamp and plug it into a clean power amp or straight to your DAW. Note that the pedal doesn’t feature any speaker simulation circuit so we recommend using a separate hardware or software guitar speaker simulation when going direct to DAW or a full-range speaker.
A new feature to our booster/drive + amp-in-a-box line of pedals, recreating legendary sounds, is the switchable WoS (Wall of Sound) circuit. We have carefully tuned this circuit at the output of the AMP section of the Heatseeker to open up the soundstage by increasing the output, adding thundering lows, and thickening high mid frequencies. Imagine standing in front of a wall loaded with Marshall amp heads and 4x12 speaker cabinets, grabbing your SG, and hitting a chord. You will be blown away by the sound projection! In combination with the tube power amp simulation and the enhanced circuit of the right section, we’ve made sure that the pick attack will be as dynamic as it gets, so¥er picking will produce clean and slightly crunchy sounds, and hard picking will give explosive distorted sounds! While primarily designed for Angus Young sounds, Heatseeker will definitely open the door to countless other guitar-great tones that use these Marshall amps and/or the Schaffer Vega Diversity System. Think of KISS, Peter Frampton, and Van Halen to name a few.
Like our other dual overdrive/amp-in-a-box designs, Heatseeker features a passive effects loop to give you the option to connect your beloved pedals between the preamp/enhancer and amp-in-a-box circuit or use the two sections as separate and independent effects when using an external bypass switcher/looper. SND is the output of the BOOST/ENHANCE section, RTN is the input of the AMP section. SND is connected to RTN when no instrument jacks are inserted in the effects loop. Note that all pedals inserted in the passive effects loop are still in the signal chain when any or both sections of the Heatseeker are in bypass mode.
Heatseeker features a power-up bypass/engage pre-set function for the footswitches. You can change the default function by holding down the footswitch(es) during power-up. That way you can select which state your pedal will go to when you plug the power supply. This function comes in especially handy to people who use remote pedal switchers/loopers as they only set the state of the pedal once and then operate from the controller.
Street/MAP Price: $279
For more information, please visit crazytubecircuits.com.
Creed extend their sold-out Summer of ’99 Tour with 23 additional dates.
Produced by Live Nation, the dates begin July 9 at Rupp Arena in Lexington, KY and wrap August 20 at the Scotiabank Saddledome in Calgary, AB with support from 3 Doors Down, Daughtry, Mammoth WVH and Big Wreck. *Check individual dates for lineup in each market.
When it kicked off in 2024, The Summer of ’99 Tour quickly became “one of the most anticipated tours of the summer” (USA Today) and “one of the hottest rock tickets of the year” (Billboard) for a return that “may be something this industry has never seen” (Pollstar). To date, CREED’s Scott Stapp, Mark Tremonti, Brian Marshall, and Scott Phillips have performed over 60 sold-out concerts throughout North America, selling over 800,000 tickets and breaking venue records in multiple markets.
“Thirty years in, it’s been a blessing to pick up right where we left off with longtime fans and to meet the next generation for the first time. It’s been an incredible ride, and we aren’t done, so here’s to a ‘Summer’ that never ends. We’ll see you on the road,” states Scott Stapp.
Creed will close out 2024 with shows in Las Vegas, NV (Dec. 30 & Dec. 31) and their newly announced dates in 2025 will follow their already sold-out Summer of ’99 and Beyond cruise sailing April 9– April 13 from Miami to Nassau with Sevendust, Hoobastank, Lit, Hinder, Fuel and more. Also in April, the band - whose audience has included fans of mainstream, rock, and country for over 25 years - will perform at Stagecoach.
For more information on all Creed tour dates as well as the opportunity to purchase entry into Mark Tremonti’s guitar clinic can be found at https://creed.com.
Tour Dates
CREED: SUMMER OF ‘99 TOUR 2025 DATES:
3DD – 3 Doors Down / D – Daughtry / BW – Big Wreck / MWVH – Mammoth WVH
Wed Jul 09 | Lexington, KY | Rupp Arena – 3DD/MWVH
Fri Jul 11 | Syracuse, NY | Empower Federal Credit Union Amphitheater at Lakeview – 3DD/MWVH
Sat Jul 12 | Camden, NJ | Freedom Mortgage Pavilion – 3DD
Tue Jul 15 | Wantagh, NY | Northwell at Jones Beach Theater – D/MWVH
Wed Jul 16 | Scranton, PA | The Pavilion at Montage Mountain – D/MWVH
Sun Jul 20 | Columbus, OH | Schottenstein Center – 3DD/MWVH
Tue Jul 22 | Hartford, CT | Xfinity Theatre – 3DD/MWVH
Thu Jul 24 | Charleston, SC | Credit One Stadium – 3DD/MWVH
Sat Jul 26 | New Orleans, LA | Smoothie King Center – 3DD/MWVH
Sun Jul 27 | Memphis, TN | FedExForum – 3DD/MWVH
Tue Jul 29 | Wichita, KS | INTRUST Bank Arena – D/MWVH
Fri Aug 01 | Lincoln, NE | Pinnacle Bank Arena – D/MWVH
Sat Aug 02 | Ridgedale, MO | Thunder Ridge Nature Arena – D/MWVH
Mon Aug 04 | Albuquerque, NM | Isleta Amphitheater – D/MWVH
Wed Aug 06 | Chula Vista, CA | North Island Credit Union Amphitheatre – D/MWVH
Thu Aug 07 | Palm Desert, CA | Acrisure Arena at Greater Palm Springs – 3DD/MWVH
Sat Aug 09 | Mountain View, CA | Shoreline Amphitheatre – 3DD/MWVH
Sun Aug 10 | Stateline, NV | Lake Tahoe Outdoor Arena at Harveys – 3DD/MWVH (Not a Live Nation date)
Wed Aug 13 | Ridgefield, WA | RV Inn Style Resorts Amphitheater – 3DD/MWVH
Thu Aug 14 | Auburn, WA | White River Amphitheatre – 3DD/MWVH
Sat Aug 16 | Vancouver, BC | Rogers Arena – BW/MWVH
Tue Aug 19 | Edmonton, AB | Rogers Place – BW/MWVH
Wed Aug 20 | Calgary, AB | Scotiabank Saddledome – BW/MWVH
Previously Announced CREED Dates:
Sat Dec 28 | Durant, OK | Choctaw Casino & Resort (Sold Out)
Mon Dec 30 | Las Vegas, NV | The Colosseum
Tue Dec 31 | Las Vegas, NV | The Colosseum
Apr 9 – Apr 13 | Miami – Nassau | Summer of ’99 and Beyond Cruise (Sold Out)
Sat Apr 26 | Indio, CA | Stagecoach