Dynamic duo: Andy Timmons and Robert Keeley collaborated on the versatile, spanking new Super AT MOD, from Keeley Electronics.
Ever wonder how a manufacturer and an artist collaborate on a signature model? Here’s the story of the Keeley Super AT MOD Overdrive.
In the world of guitar gear, artist signature products are a time-honored tradition. When the chemistry works just right, they’re as potent and attention-grabbing as a well-struck power chord.
But if you’ve ever wondered how an artist and manufacturer actually work together on a product, the new Keeley Electronics Super AT MOD overdrive provides a striking case study in the mind-meld process.
While the new Super AT MOD looks like a classic 3-knob overdrive, the mode toggle is the pedal’s secret sauce, and the AT setting adds a particularly shimmering quality to the harmonically rich overdrive.
The versatile pedal is the latest creative partnership between ace guitarist Andy Timmons (known for his solo work and touring/recording with Danger Danger, Olivia Newton-John, Kip Winger, and many more) and Robert Keeley, a pioneer and leading presence in the realm of guitar effects.
In a collaboration spanning more than three years, Timmons and Keeley have become great friends, mutual provocateurs, and culinary kindred spirits. (More on that later.) They began working together in early 2020, when Timmons and Keeley teamed up on the wildly successful HALO dual echo pedal.“We spent more than a year-and-a-half really fine-tuning that pedal,” says Timmons. “It was a wonderful collaboration. We couldn’t have imagined how it would resonate with so many people.” Keeley adds with a laugh “I have found that my customers like what Andy’s ears like. It resonates so much with our customers that the Halo has become 25 percent of our business. Andy’s ears are really golden.”
Buoyed by the HALO collaboration, in late 2022 the creative process resumed in a new direction: a signature overdrive. In conceiving the new Super AT MOD overdrive, Timmons knew exactly what he was looking for: a flexible, highly responsive overdrive that can beef up a guitar’s tone but also offers an option to achieve high-end clarity and shimmer.
The initial inspiration for the Super AT MOD came from Timmons’ love of a classic Keeley mod for the Boss BD-2. “The modded BD-2 goes from clean to mid-gain, and it’s very responsive to touch,” Timmons notes. “But I was always reaching for this crystalline, glassy gain with just a little bite. So, with the new pedal we have two modes: a ‘phat mode’ which alludes to Robert’s original modded circuit, and then there’s the AT ‘modded modded’ side.”
Keeley Electronics Super AT Mod Overdrive - Video Demo Review with Robert Keeley and Andy Timmons
Andy Timmons and Robert Keeley talk about their collaboration for the new Super AT MOD, and Timmons displays its versatility and powerful dual-mode gain. You’ll also hear the guitarist use his other Keeley signature pedal—the HALO Dual Echo.
Sometimes Less Is More
Keeley took a different angle in designing the Super AT MOD. In contrast to his normal modus operandiof boosting certain frequencies, this pedal’s “modded modded” AT Mode is based on a subtractive method for sculpting the pedal’s tone.
“The original phat mod was designed to push up the bridge pickup of a Strat or Tele and give it a bit more girth,” Keeley explains. “But Andy pointed out that if we carve away some of the frequencies, his guitar will stand out more. Andy was approaching this from the opposite direction, playing with a pickup that’s much more akin to a humbucker, with a bigger dynamic range, so it doesn’t need that push on the low- and mid-bass.”
During the development and testing phase, Timmons relied primarily on his main guitar–his Ibanez ATZ100 signature model with three humbucking pickups–and his beloved Mesa/Boogie Lonestar 2x12 combo. But the final version of the pedal offers an expansive versatility that makes it a fine companion for just about any rig.
“I’m lucky to find these cohorts in tone. We enjoy the process and hopefully that comes through in the final product.”
That flexibility is due, in large part, to the aforementioned tone-shaping method that Timmons encouraged Keeley to employ. “To me, the subtractive approach is a great way to arrive at a better tone,” Keeley says. “You can take away some of the excess and it leaves you with something more natural. With that in mind, the AT mode changes the tone control and what it allows to pass through. It takes out some of the bass tones, so it clears up that range and makes humbuckers less bloated. We also added a little bit of sparkle—some high frequency response from letting the natural stuff go through.
“We also tried to get a more tube-like sound, with the diodes and asymmetrical clipping,” Keeley adds. “The Super AT MOD gives Andy that nice chimey top end and that tube-amp-type growl and distortion because it uses JFET transistors. They’re the closest thing we have to tubes.”Creativity and Camaraderie
The Timmons/Keeley partnership is a testament to technology—and to a friendship that blossomed during the long, sometimes grueling playing/listening sessions that punctuated the development process.
Timmons is based in McKinney, Texas, about a three-hour drive from Keeley headquarters in Oklahoma City, Oklahoma. That proximity allowed for frequent visits to the Keeley shop and made it easier for Timmons and the Keeley team to work together on the successive HALO and AT MOD prototypes. “You’ve really got to be able to be in a room together and feel what’s happening,” Timmons says. “Because we were all in the same room, we were able to go beyond what we had ever envisioned. That’s the blessing of them being just a few hours away.”
“The initial inspiration for the Super AT MOD came from Timmons’ love of a classic Keeley mod for the Boss BD-2.”
A key member of the creative team was Aaron Pierce, artist relations guru at Keeley Electronics. Pierce was deeply involved in the Timmons/Keeley collaboration right from the beginning, and he helped jump-start the process of designing the Super AT MOD.
“During the two years that we were working on the HALO,” says Pierce, “we were always talking with Andy about what he was looking for in an overdrive. So, we were working on ideas for at least a few months before getting Andy back into the process. We had learned a lot about his preferences during the HALO development.”
Timmons greatly appreciates what Pierce brought to the undertaking. “I can’t stress enough: Aaron was really the third side in the triangle. It was so important to have his ears in the room. Even if I couldn’t articulate to Robert what I was hearing, Aaron was able to do it, because he could hear it and put it into words in a way that Robert could act on. Aaron was the perfect translator between Robert’s methodology and what I was going for.”
The HALO design journey took two full years, but thankfully the AT MOD’s development was relatively brisk—perhaps three or four months, and three visits from Timmons. On each visit, Keeley would offer hospitality by cooking for the crew. Keeley is well known among his friends as a fantastic cook.
“It took more than three sessions—probably about six meals together,” Keeley says as all three burst into laughter. “The food really does stand out,” adds Timmons. “We didn’t lose any weight during the sessions.”
Ultimately, the Super AT MOD benefited greatly from the spirit of friendship and shared passion. “I was able to be really demanding because they were willing to go down the path with me,” says a grateful Timmons. “Their willingness to be open and do things differently was the key. I’m lucky to find these cohorts in tone. We enjoy the process and hopefully that comes through in the final product.”Lasting Impact for All
Just don’t call them late for supper! The Keeley creative team assembles in Oklahoma City in February 2020 (left to right): Craighton Hale, Robert Keeley, Andy Timmons, Aaron Tackett, and Aaron Pierce.
Asked if the collaboration with Timmons has opened a new approach for future designs, Keeley answers emphatically: “Most certainly. I’m going to use the subtractive process and implement that design philosophy on future pedals. That’s one of the reasons it’s so rewarding working with Andy: developing more and more chops to get nuanced sounds.”
Pierce agrees: “Working with Andy makes us better on the engineering front and the manufacturing front. Every time we collaborate with him it pushes us on our technology, and we discover things that we never would’ve found without him.”
At the end of the process—and a bunch of great meals with the Keeley team—Timmons is thrilled with the results: the Super AT MOD overdrive delivers the tone and versatility he sought. “I haven’t had a pedal feel like this before. It has such a natural thing about it. The dynamic range just coming from the fingers is incredible. It’s the delicate, mild gain that I’ve been seeking for a long time. But if I want to crank it up, it has incredibly powerful full-on gain.”
You can hear Timmons putting the pedal to great use on his brand-new series of singles under the title Bitter Suites: The Outlier Nocturne. Beginning with the first one, “Here Lies The Heart,” the ongoing solo series features Timmons’ playing in a spacious, dynamic setting, inspired by the Super AT MOD’s tonal range. “That AT mode is what I needed. Since that pedal was created, I’ve gotten the next two tracks because this was the sound I was waiting for.” Timmons attests.
To learn more about the Super AT MOD pedal and Keeley Electronics, visit robertkeeley.com.
Timmons tests a prototype of the AT MOD with one of his Ibanez ATZ100 signature model guitars and a Mesa/Boogie Lonestar 2x12 combo at Keeley headquarters in Oklahoma City.
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Overall, they encompass the historic arc of stompbox technology from fuzz and overdrives, to loopers and samplers, to tools that warp the audio end of the space-time continuum. Click on each one to get the full review as well as audio and video demos.
DigiTech JamMan Solo HD Review
Maybe every guitarist’s first pedal should be a looper. There are few more engaging ways to learn than playing along to your own ideas—or programmed rhythms, for that matter, which are a component of the new DigiTech JamMan Solo HD’s makeup. Beyond practicing, though, the Solo HD facilitates creation and fuels the rush that comes from instant composition and arrangement or jamming with a very like-minded partner in a two-man band.
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Walrus Monumental Harmonic Stereo Tremolo Review
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RJM Full English Programmable Overdrive Review
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Strymon BigSky MX Review
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JHS Hard Drive Review
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Cusack Project 34 Selenium Rectifier Pre/Drive
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Vox Real McCoy VRM-1 Review
Some pedals are more fun than others. And on the fun spectrum, a new Vox wah is like getting a bike for Christmas. There’s gleaming chrome. It comes in a cool vinyl pouch that’s hipper than a stocking. Put the pedal on the floor and you feel the freedom of a marauding BMX delinquent off the leash, or a funk dandy cool-stepping through the hot New York City summertime. It’s musical motion. It’s one of the most stylish effects ever built. A good one will be among the coolest-sounding, too.
Or you can check out the Reverend Billy Corgan Drop Z. At a glance, the Drop Z may not look like much of a cure for the 6-string doldrums. But pick it up and you’ll feel the difference fast. The Drop Z is built around a 26 1/4" scale and a 24-fret neck that makes this Reverend feel like a very different instrument. Designed and optimized for use with drop tunings, it opens the doors to whole palace ballrooms full of new musical possibilities.
Beastly Blue and Easy To Use
If the feel of the Drop Z alone doesn’t dislodge you from a guitar rut, there’s a good chance that its pretty profile would compel you to pick it up and play. It’s a handsome instrument. The conservatively chambered alder body (it’s routed at the bass and treble horns) is clad in a very pretty twilight-blue-meets-ocean-turquoise glossy finish, which is complimented perfectly by the brushed-aluminum pickguard. The chambered body definitely helps with the weight; the Drop Z is a little less than eight pounds. It also helps the guitar feel very balanced. There’s not a hint of neck dive. And if it weren’t for the discernibly longer stretch you make to reach the first fret, it would feel as familiar and comfortable as a nice Stratocaster.
The medium-oval neck, which is satin-finished maple with a maple fretboard, is a pleasure. It feels substantial and fast, and getting around its expanse is facilitated by a perfect setup. The 12" fretboard radius and jumbo frets also add to the Drop Z’s easy-breezy feel. Big bends require little more effort than they would on a normal scale, and I never felt the urge to squeeze a note to compensate for the weird intonation issues big frets and long scales can cause. From first fret to 24th, playing the Drop Z is an easy glide.
The Drop-Z pickups are a modified version of the Railhammer Billy Corgan Z-One pickups in his other Billy Corgan signature Reverends. The pickups’ impedance is rated at 14.5 ohms, which suggests a pretty hot unit. In this incarnation, the Z-One pickups are tuned for even more output and smoother treble. That’s a good idea for a pickup designed with heavy musical settings in mind.
Fangs on Cue, but Mellon Collie, Too
Though the Drop Z is easy to play in a getting-around-the-fretboard sense, plugging and turning up may take adjustments in approach and attitude. As the pickups’ impedance rating suggests, the Railhammer Z-Ones have a lot of hop, and as the expansive lengths of string resonate impressively, you’ll hear a lot of very present treble overtones. I spent most of my time with the instrument in a C# modal tuning or C–G–D–G–B–B, and in each tuning the Drop Z rumbled impressively (particularly through a late-’60s Fender Bassman head, which is a beautiful, burly match for this instrument). But unless I wanted to linger among the peaky resonances of the highest two strings (and I often did), I needed to attenuate both tone controls.
The good thing is that each of these controls has a very nice range. And while the guitar can start to feel stripped of its essence with too much tone or volume attenuation, there is wiggle room for softening transients and taming unwanted overtone blooms. These pronounced peaks are easy to hear in both the neck and bridge pickup, depending on your approach. I worked a lot more with open strings and drones than Billy Corgan might on songs like “Zero,” which the guitar was tailored for. But for those keen to explore the mellower side of the Drop Z’s personality, the combined pickup setting is a magic bullet. It’s airy, open, and makes it easy and rewarding to navigate slow-moving chord changes with strong bass foundations. It’s also fun to take advantage of the fretboard’s whole expanse in this setting—darting and dashing from toppy treble-note clusters to growling bass harmony notes—and enjoying the detail and string-to-string balance. By the way, the Drop Z, as you might guess, sounds positively massive with distortion, though you should be careful to choose your gain device carefully. The pickup’s midrange emphasis will make a similarly mid-heavy distortion sound harsh. A Sovtek-style Big Muff, with its scooped midrange and round low-end resonance, is an ideal fit if you want to get extra large.
The Verdict
The Korea-made Drop Z is a beautifully crafted instrument and a silky, easy, balanced player that will make you forget, in moments, about the expansive fretboard and extra scale length. It feels completely natural and effortless. How you relate to the tones here will depend on your musical mission. The hot pickups make it a perfect fit for outsized, aggressive tones. I, for one, would prefer to explore the wealth of overtones this well-constructed instrument generates via less aggressive pickups. But players like me will still find much to love in the combined pickup settings and the pickups’ impressive capacity for detail, which, depending on the tuning you use, can highlight harmonic interplay between notes and chords that would be much less prominent and less fun to explore in a more conventional guitar.
Reverend Billy Corgan Drop Z Signature Electric Guitar - Pearl White
Loopers can be complex enough to make beginners cry. They are fun if you have time to venture for whole weeks down a rabbit hole. But a looper that bridges the functionality and ease-of-use gap between the simplest and most maniacal ones can be a sweet spot for newbies and seasoned performers both. The JamMan Solo HD lives squarely in that zone. It also offers super-high sound quality and storage options, and capacity that would fit the needs of most pros—all in a stomp just millimeters larger than a Boss pedal.
Fast Out of the Blocks
Assuming you’ve used some kind of rudimentary looper before, there’s pretty decent odds you’ll sort out the basic functionality of this one with a couple of exploratory clicks of the footswitch. That’s unless you’ve failed to turn down the rhythm-level knob, in which case you’ll be scrambling for the quick start guide to figure out why there is a drum machine blaring from your amp. The Solo HD comes loaded with rhythm tracks that are actually really fun to use and invaluable for practice. In the course of casually exploring these, I found them engaging and vibey enough to be lured into crafting expansive dub reggae jams, thrashing punk riffs, and lo-fi cumbias. Removing these tracks from a given loop is just a matter of turning the rhythm volume to zero. You can also create your own guide rhythms with various percussion sounds.
Backing tracks aside, creating loops on the Solo HD involves a common single-click-to-record, double-click-to-stop footswitch sequence. Recording an overdub takes another single click, and you hold the footswitch down to erase a loop. Storing a loop requires a simple press-and-hold of the store switch. The sizable latching footswitch, which looks and feels quite like those on Boss pedals, is forgiving and accurate. This has always been a strength of JamMan loopers, and though I’m not completely certain why, it means I screw up the timing of my loops a lot less.
Many players will be satisfied with how easy this functionality is and explore little more of the Solo HD’s capabilities. And why not? The storage capacity—up to 35 minutes of loops and 10 minutes for individual loops—is enough that you can craft a minor prog-rock suite from these humble beginnings. Depending on how economical your loops are, you can use all or most of the 200 available memory locations built into the Solo HD. But you can also add another 200 with an SD/SDHC card.Deeper into Dubs
Loopers have always been more than performance and practice tools for me. I have old multitrack demos that still live in the memory banks of my oldest loopers. And just as with any demos, the sounds you create with the Solo HD may be tough to top or duplicate, which can mean a loop becomes the foundation of a whole recorded song. The Solo HD’s tempo and reverse features, which can completely mutate a loop, make this situation even more likely. The tempo function raises or lowers the BPM without changing the pitch of the loop. As a practice tool, this is invaluable for learning a solo at a slower clip. But drastically altered tempos can also help create entirely new moods for a musical passage without altering a favorite key to sing or play in. Some of these alterations reveal riffs and hooks within riffs and hooks, from which I would happily build a whole finished work. The reverse function is similarly inspiring and a source of unusual textures that can be the foundation for a more complex piece.
HD, of course, stands for high definition. And the Solo HD’s capacity for accurate, dense, and detail-rich stacks of loops means you can build complex musical weaves highlighting the interaction between overtones or timbre differences among other effects in your chain. I can’t remember the last time I felt like a looper’s audio resolution was really lacking. But the improved quality here lends itself to using the Solo HD as a song-arranging tool—and, again, as a recording asset, if you want a looped idea to form the backbone of a recording.
The Verdict
With a looper, smooth workflow is everything. And though it takes practice and some concentration in the early going to extract the most from the Solo HD’s substantial feature set, it is, ultimately, a very intuitive instrument that will not just smooth the use of loops in performance, but extend and enhance its ability as a right-brain-oriented driver of composition and creation.
