Running two effects of the same kind concurrently can yield amazing results. Stacked fuzzes or RATs? I’m in heaven. Other effects work less reliably well in pairs. Two reverbs, for instance, can sound killer but can turn an otherwise carefully crafted signal to smog. Twin phasers, in my experience, can be counted among the effects that are delicious together. It takes just two simple one-knob phasers to get very weird. Build two phasers into one, though, and add a few extra tone shaping controls, and the weird gets weirder fast.
Keeley’s new U.S.-made, digital Oaxa twin phaser can feel nearly as simple and straight ahead as two Small Stones running side by side, and honors the elegance and ease of that solution in many ways. There’s just three knobs—for rate, feedback, and depth. A small 3-position toggle switches between 10-stage phase, 4-stage phase, and a Uni-Vibe-style mode. Two footswitches select between the individual phaser or a combination of the two. If you want to keep things simple, you can dive in no further than that and have a great time. But Oaxa bears many secrets for deeper diggers.
Working the Waves
The phase effect is fun to use intuitively. And adding it in and out can be low stakes. Feeling that a riff sounds lifeless? Add a phaser and twist the rate. Maybe it’ll be exactly what a song needs. Maybe it will sit like rotten mayonnaise. But it won’t have taken much effort to try, and you’ll probably have fun along the way. The Oaxa is deeply satisfying in this manner.
The brilliant, big rate knob can be adjusted with precision using just a toe (provided you have the right shoes). And while the depth and feedback controls might be an affront to Phase 90 and Small Stone users, Oaxa’s controls open up useful phase possibilities without leaving you feeling doomed to get lost in the weeds. The depth control, for instance, has so much range it can render the phaser all but subliminal—making it a killer always-on sweetener that can be nudged in and out of prominence via the depth knob. Those just-barely-there depth settings can also be subtly re-shaped by the similarly rangey feedback control, which acts like a filter, adding wah-like focus at mild depth. At more intense depths, the feedback adds appreciably more vowelly “wow” tonalities that give Oaxa more than a hint of a Mu-Tron’s beautiful vintage essence. This variation—and interactivity—among depth and feedback colors alone makes Oaxa a great production, arrangement, and guitar layering tool, particularly in spacious arrangements.
Bear in mind that all the phase phenomena I’ve described here were observed in the 4-stage phaser voice—my most natural and familiar phase space. But the 3-way toggle can also be configured for 10-stage voicing or as a Uni-Vibe-style phase effect. The 10-stage voice is a little more binary than the 4-stage, and can obscure some overtone nuance in the wash. At extreme depth settings it can even sound almost tremolo-like. For a lot of players, the more focused modulation waves in the 10-stage voice will be a perfect fit for rhythmic delays or staccato passages begging for a little extra wobble and a more interesting tail. The Uni-Vibe style setting, meanwhile, is a pretty authentic version of the effect and delivers a recognizable take on the drippy “whoop”-like phase created by a Uni-Vibe’s optical circuit. Like the real deal, it sounds fantastic with fuzz.
Multiplied by Two ... and More
When both phasers are on, Oaxa’s jewel lamp flashes blue and red, and the visual suggestion of a party is apt. There are deep and crazy sounds here that can take you deep into the wee hours. But not all combinations are magic. Certain pairings of modulation rate and harmonic peaks can obscure details that might make a single phase voice pleasing. But the option to run the two phasers in parallel or series enables more or less detailed versions of a compound phaser voice, respectively. And just-right phase-rate relationships combined with contrasting voices, depth, and feedback can yield fantastic results. Fast-throbbing U-Vibe style modulations combined with slow, deep 4-stage phases are extra dimensional—as are just about any two high-contrast rates. Nailing these combinations and hearing them via stereo—the other great force multiplier on Oaxa—can pull you deeper still into the pedal’s capacities.
The Verdict
Do you remember what I said at the top about the Oaxa being simple? It’s true. It’s just that Oaxa’s elegant design also has a lot in store for troublemakers willing to dig a bit. And if the stereo and dual-phase settings aren’t trouble enough, you can use the footswitches and knobs to introduce compression or extra filtering, or reconfigure the toggle to include 2- and 6-stage phaser voices. I’d venture that using the most basic functions will make the $199 price well worth it over time. But you’ll likely celebrate the day you stumble across one of Oaxa’s more complex finds. I suspect such days will be many in number, too.
Vintage Verified founders Jon Roncolato (left) and Zach Ziemer
We don’t often talk about Renaissance high art and ’50s rock ’n’ roll guitars in the same breath, unless we’re forming a new rockabilly-prog band called Hot-Rod Maximus. (You’re welcome.) But in the modern world of art and guitar collecting, items reputed to be the work of either Leonardo Da Vinci or Leo Fender are subject to much the same scrutiny from experts in the field, are known for fetching vast prices from discriminating buyers, and, given the millions of dollars potentially involved in even a single sale, are likewise expected to stand up to the most rigorous high-tech scientific analysis, as well. Right?
Well, almost. While the worlds of high art, medicine, astronomy, police forensics, and environmentalism have all taken that last cue to heart by making data-driven determinations with the latest tools of chemical analysis, the vintage guitar market—and its many rightfully respected authorities—has generally proven resistant to sharing the process of authentication with the likes of spectrometers, microscopes, and 3D imaging, tools that have long proven their worth in identifying the material composition of everything from planets to polyps to paint thinners. Black lights on the backs of headstocks have typically been about the latest “tech" in the room.
Until now. In a story that feels ripped from The Da Vinci Code or Cold Case Files, two remarkably down-to-earth—if undeniably intrepid—guitar-shop guys from Nashville, Jon Roncolato and Zach Ziemer, have quietly upended the vintage-guitar market in a matter of months. Fueled by rotating batches of fresh-ground coffee, an abundance of nerve, and a stomach for study, they’ve tapped some of the most advanced and expensive analytical machines available to capture, catalog, and compare hundreds of thousands of data points from countless vintage and modern instruments—their lacquers, pigments, pots, pegs, pickups, and parts—building the largest dataset for guitar-component and finish comparison in existence.
In the process, they’ve issued a gentle nudge to dealers, appraisers, and collectors—and yes, they’ve even shifted the status of some long-held vintage “treasures.” Although they no longer appraise or sell instruments themselves, they’ve still managed to ruffle a few feathers and attract more than a few legal threats. At the same time, they’ve leveraged their diligence and strong reputations to assemble a trusted advisory team made up of some of the most respected minds in guitars, art, and hard science: icons like repair guru Joe Glaser, cultural-heritage scientist Dr. Tom Tague (who authenticated Da Vinci’s “lost masterpiece” Salvator Mundi), Music City session legend Tom Bukovac, pickup mastermind Ron Ellis, and analytical chemist Dr. Gene Hall, among others.
Vintage Duco reference/research materials
Jon and Zach are guarded about the technology, as you might expect. They don’t post selfies, they don’t have a podcast, and they won’t be starting one. As Ziemer puts it, they’d much rather “keep our heads down and keep hammering away” with laser-based spectrometers, plumb the deepest secrets of Fullerton red Strats, and compare the chemical makeup of Duco paints (ironically, both Pollock and Fender’s mutual go-to.) In their scrupulously clean Nashville HQ—which will expand to offices in L.A. and N.Y.C. in 2026—they seem pretty resigned to their current controversial status, and remain motivated primarily by going after, y'know, the truth.
Okay, that and a good cup of coffee.
What was the genesis of this idea to apply these types of cultural heritage sciences to vintage guitars? Is the problem with inaccuracies, refinishes, and forgeries really that widespread?
Jon Roncolato: We met while I was the GM at Carter Vintage Guitars in Nashville. We initially hired Zach as part of the inspection team. It’s difficult to find people who have logged enough time examining vintage instruments to truly know what they’re looking at, but Zach had spent a couple years at Glaser Instruments—the go-to shop for repairs on high-dollar pieces.
When Zach became Head of Authentication, we began seeing questionable instruments come through with six-figure price tags that other experts had already signed off on. When you have a six-figure instrument and multiple experts all saying different things, you’ve got a problem. That’s when we realized there had to be a better way to do this—something grounded in science, not speculation.
Zach Ziemer: Everybody misses now and again. Most dealers are trying their absolute hardest with their experience, eye, and gut to tell an original from a fake or a refin. There’s simply some things you just can’t know unless you look at them with the kinds of tools that we’re bringing to the table. And it shouldn’t be that controversial: after all, literally every other collectible industry has a third party unassociated service like ours. The most obvious one is PSA with collectible sports cards. PSA is a little different than it used to be, but everybody still sees a sports card and a PSA box and if it says, “PSA 9,” for instance, you know you’re probably in good shape.
“In the art world, scientific validation has long been standard practice—pigment analysis, canvas fiber studies, dimensional scans. Sometimes it changes the story. That’s not an attack on tradition. It’s the pursuit of truth.” —George Gruhn, Gruhn Guitars
Jon Roncolato: In the art world, if you don’t have both iron-clad provenance and scientific analysis, it’s not possible to certify a piece as unequivocally “by the hand” of a given artist. Art dealers are very specific about their language, and there’s a whole hierarchy of degrees of certainty that directly correlate to the price of the piece. In the world of dealing guitars, though, even if you’re not 100% sure, you have to absolutely stake all your credibility on a guitar, even if there’s some doubt. You're not going to sell a $250,000 custom color Fender if you come out and say, “Well, I think it's a custom color. It looks good to me.” So that's just been the structure of the industry. Being in the underbelly of the whole thing, as we were, we realized what a big problem this was.
There must have been a ridiculous learning curve. You guys are guitar dudes, not scientists. Takes a bit of brass to bite off something like that, no?
Jon Roncolato: We have a framed quote in the kitchen from Wilbur Wright: "There are two ways of learning to ride a fractious horse: one is to get on him and learn by actual practice how each motion and trick may be best met. The other is to sit on a fence and watch the beast awhile, and then retire to the house." We chose the former.
That said, we spent the first year and a half offering no services at all—just studying the science. That included week-long training seminars where everyone but us had a doctorate attached to their name, and consulting with the top experts in the cultural heritage field.
We also didn’t get here alone. We caught a major break by connecting with Dr. Tom Tague and Dr. Gene Hall, two of the world’s leading experts in analytical chemistry. They took us under their wing and gave us a crash course in PhD-level material analysis.
Zach Ziemer: I can't even express how difficult it was to make heads or tails of any of this at first. Jon and I were not chemists, and a lot of what we do now is largely analytical chemistry. So the learning curve on that was incredibly steep. We always joked that we were smart enough to have the idea, but dumb enough to think we could do it. And while this process exists in other industries, the finished instrument industry is totally unique. The instruments are so modular, and you have finishes, plastics, hardware, pickups, and so you have to have an answer for all that information.
Jon Roncolato: That’s right. The process is designed to have an answer for anything and everything on the instrument. The headstock decals, the finish, the hardware, the fret wire, the fingerboard inlays—we have a data-driven answer for everything. That was really critical, because we didn't want to give incomplete information. Another absolutely critical principle for us was that anything we put in one of these reports has to be defensible in court. If we get subpoenaed to go to court, which inevitably we will, we need to know that Zach or I can show up and we can defend this and prove this. Our other guiding principle is that we remain completely independent, and not touch the buying and selling of the instruments.
“Vintage Verified is doing what we couldn’t do 20 years ago. They’re bringing in real tools—from forensics, from art conversation, from aerospace—and applying them to guitars. And it’s not about replacing experience. It’s about supporting it.” —Joe Glaser, Glaser Guitars
The workshop
Fair enough. So, what’s the most difficult or highly sensitive area of your analysis?
Jon Roncolato: Finish is easily the most complicated part of what we do, an absolute maze of information, and it’s also where you see the biggest value swings. Traditionally, if a guitar’s been refinished, the rule of thumb is that it cuts the value in half. Nowadays, it probably cuts the value by 40%. But if you start talking about custom colors, like a Fender Sonic Blue Strat, or the Fullerton red we have in our lab right now, this Strat here is probably a $250,000 Strat, assuming the finish is original. If the finish is, in fact, not legitimate, then potentially you’re looking at a $20,000 Strat.
And to determine this, you don’t just need that guitar’s own fingerprint, if you will, but you need to be able to conduct comparative analysis against a bulwark of trustworthy data. Where does that come from?
Jon Roncolato: We’ve been very fortunate to have guys like Joe Glaser and George Gruhn in our corner, who put their own cred on the line to help us scan and analyze literally thousands of vintage guitars, plus Dr. Gene Hall, whose work decoding Jackson Pollock paintings means he has the largest collection and database of period-correct Duco, Ditzler, R-M, Sherwin Williams, etc. paints on the planet, the same paints Fender used in their golden era. That’s just the tip of the iceberg. We now have millions of data points across several different machines, a good $500,000 worth of spectrometers alone. We spent eight hours a day, all day, every day, collecting data as much as we possibly could.
So is it very much a one-to-one comparison? “This finish’s chemical composition is true to the year this guitar purports to be, so we’re good”? Or is it more complex than that?
Zach Ziemer: A little of both. Sure, the data that I just grabbed matches the aggregate of the given model/era pretty well, so therefore we can say with a high degree of certainty that it’s a period-correct material. But what really blew the doors open for us was when we got past that level, and started to have a fundamental understanding of these lacquer formulations, how various formulations over time were degrading, and how the different components in a lacquer formulation—plasticizers, pigments, etc.—all interact and evolve. How did those components morph over time?
If the government set regulations, what was the regulation attached to? If you look at a spectrum of a given lacquer, you’ll have hundreds of chemical compounds. A ton of information in there. What we had to do was figure out which chemical compounds were going to be chief identifiers of who was using what, and when. Building out this timeline for the major manufacturers was the bulk of our work, just as much as developing an understanding of the complexity of the materials. In other words, the data is only valuable if you understand the materials that are producing the data.
You’ve encountered some backlash, and even dealers who later became supporters initially had their lawyers on the phone. What’s your message to dealers, appraisers, collectors, working players, and the business as a whole?
Jon Roncolato: We knew there would be a significant amount of skepticism and backlash early on, just as there always is around a new service or technology. It’s like the wagon wheel salesman in the age of the automobile. Zach and I think they’ll come around eventually. One positive aspect of our service is that it allows buyers who would otherwise not feel comfortable spending large amounts of money on a piece to now buy with confidence. For years, many people at the top of the market wouldn’t buy custom color Fenders, wouldn’t buy Flying Vs. Because they were largely under the impression that many of them are refins or counterfeit pieces. So, already we’ve seen that many of these people who previously were not buying custom colors, bursts, or whatever, are now joining that market again because they have the trust that these are authentic.
Zach Ziemer: Our mission is to make sure that the data and the information we provide is absolutely correct. That’s our lane. We're not the guitar police. We are not policing transactions, and we do not appraise or assign any type of valuation, monetary or otherwise, to any instrument, ever. We’re hoping that we can help dealers begin to understand that this is designed to be an asset. It’s designed to help you protect yourself. And look, as soon as we print out a report, and I hand it to you, you can throw it in the garbage if you want. But it’s an option for you. Ultimately, it’s something that we believe helps give people the confidence to buy and sell high-value instruments, and know exactly what they’re getting.
Most people think of samplers as drum machines with delusions of grandeur—four-bar loops, predictable patterns, and neatly sliced bits living forever in the prison of the grid. But for me, samplers and loopers are something completely different. They’re instruments of disruption. They’re creative accelerants. They’re circuit breakers designed to shock me out of my comfort zone and force my compositions, productions, and performances into strange, exhilarating new shapes.
One of my favorite studio practices—and something I encourage my Recording Dojo readers to experiment with—is to sample your performances. Not a preset library, not a pack from somebody else, but use your own melodic lines, motifs, rhythms, textures, and half-formed ideas. There’s something magical about hearing your own musical DNA come back to you in an unfamiliar, mutated form. It’s like collaborating with a version of yourself from an alternate timeline.
The real thrill isn’t about capturing pristine performances. In fact, it’s often the opposite: I’ll grab a phrase that’s imperfect, or mid-gesture, or harmonically unresolved, and drop it into a sampler purely to see what it becomes. When you do this, your musical habits—your well-worn licks, default rhythms, and predictable choices—don’t stand a chance. The sampler shreds them, recontextualizes them, and hands them back as raw material for re-writing, re-arranging, or composing something that never would have emerged in a linear workflow.
Sometimes the transformation is subtle—a lick becomes a rhythmic ostinato, a sustain becomes a pad, a passing tone becomes a focal point. Other times the sampler just mangles it, spits it out sideways, and you think, ‘Oh… now that’s interesting.’ Either way, it becomes a tool for breaking patterns, both musically and psychologically.
My Process: Mutations, Not Replications
My approach to sampling isn’t any more complicated than anyone else’s. I’m not using some secret, elite technique. I’m simply collecting fragments—little melodic cells, rhythmic quirks, harmonic gestures—and giving them permission to misbehave.
I’ll chop up key licks into uneven slices, or isolate just the back half of a phrase, or extract a rhythmic hiccup that wouldn’t survive in a normal editing session. Then I reassemble these bits with the expectation that they won’t behave. I want mutations. I want the musical equivalent of genetic drift. I’m not trying to color within the lines; I’m trying to see what happens when I throw the coloring book across the room.
Once the sampler gives me something intriguing, I run these new creatures through chains of further processing: glitch delays that stutter and fold the sound into origami-like shapes, micro-loopers feeding into overdrives or fuzz pedals, shimmering reverbs that stretch a 200-millisecond blip into a widescreen texture. The result can be anything from a ghostly sustained pad to a snarling, percussive accent, to a completely alien harmonic bed.
You can use these elements as alternate melodic lines, counterpoint, ambient beds, transitions, ear candy, or even structural material for entire songs. And because the source is you, the end result stays connected to your musical identity—just bent, twisted, and refracted into something fresh.
Outcome Independence: The Spirit Behind the Process
If there’s one thing that makes this approach powerful, it’s letting go of the expectation that what you sample must “work.” This is pure experimentation, not product-driven crafting.
I’m outcome-independent when I do this. I’m not looking for a result so much as engaging in the joy of the unknown. Some days nothing meaningful emerges. Other days I strike gold. But either way, the process sharpens my creative instincts. It keeps me curious.
“There's something magical about hearing your own musical DNA come back to you in an unfamiliar, mutated form.”
I use this same strategy when producing artists or working on film and soundtrack material. Recently, I applied it to pedal steel—an instrument known for its lyrical beauty—and the resulting textures were … well, not beautiful in the traditional sense. They were fractured, shadowy, almost Jekyll-and-Hyde. Perfect for a track built around the duality of personality. The clients absolutely loved the unpredictable, emotive soundscape those mutated pedal steel lines created.
Some Favorite Tools for Sonic Mutation
You don’t need a million pieces of gear to do this. A single sampler and a single effects chain can take you far. But here are a few of my favorite “chaos engines,” all of which I own and use regularly:
• Teenage Engineering OP-1 Field – A sampler, synth, tape machine, and chaos generator disguised as a minimalist art object. Its sampling engine and tape modes are perfect for tonal mutations.
• Teenage Engineering EP-133 K.O. II – A quick, dirty, wonderfully immediate sampler for slicing, punching, and recombining your ideas without overthinking.
• Omnisphere 3 – The granular engine alone is a goldmine for turning simple samples into cinematic, evolving textures.
• NI Maschine – Still one of the fastest environments for grabbing a sound, flipping it, and building an idea around the unexpected.
• …and whatever else you have lying around. The point is exploration, not allegiance to any one workflow.
Final Thoughts
Sampling your own voice as an instrumentalist—and then breaking it—reminds you that creativity doesn’t live in the safe, predictable spaces. It lives in the moments where you lose control just enough to discover something new. Give your sampler permission to surprise you, confuse you, and sometimes even challenge your sense of what you sound like. That’s where the good stuff begins.
Most amp kits are Fender flavored, typically recreating historic 5F1 Champ, 5F2-A Princeton, or 5E3 Deluxe tweed-style circuits. And since an actual late-’50s Princeton, for example, costs about $3,000, at well less than a third of that price a DIY kit is an affordable alternative for any guitarist with soldering skills and the patience to follow instructions. But what if Fender isn’t exclusively the taste you’re looking for? What if Valco, Ampeg, Marshall, or modern takes on classic tones also float your rubber raft?
Enter StewMac’s mighty little Valve Factory 18 head kit, a 12-pound beast that punches above its weight class, offers a variety of classic-inspired sounds, and hints at modern boutique amp voices.
Flexible Fryer
Part of the Valve Factory 18’s versatility is due to the two preamp tube options provided in the kit: a 12AX7 or a 12AY7. But it’s mostly the result of a concise-but-flexible set of controls. On the front panel, there are volume, gain, and tone dials, but the way they shape sound depends on whether your guitar is plugged into the low- or high-input jack. The low input is the clearer of the two and hews close to Fender tweed world. But the high input offers gentle breakup that, to my ears, gets into gnarlier old amp voices. Both channels offer plenty of headroom and work well with pedals, but if your primary sources of tone color are stompboxes, the low input may be best for you. Both also benefit from a clean boost footswitch that pumps up the volume without altering the tones in play too much.
On the back, there’s an impedance switch with 4-, 8-, and 16-ohm settings, so the Valve Factory 18 can be used with most cabinets. There’s a single speaker-out jack, and on/off and standby toggles. And as its name implies, the amp delivers 18 watts, and it’s a loud 18 watts at that—fitting for today’s small-amp sweepstakes.
Brick By Brick
Confession: StewMac sent me an immaculate, pre-assembled review model rather than a kit. But I still settled into a meticulous reading of the highly detailed and lavishly illustrated instruction book. It begins with a menu of the included parts, which are metal film and metal oxide resistors, plus a single wire-wound resistor, two 1N5408 diodes, nine various capacitors, a pair of custom-built Pacific Trans transformers (power and output, naturally), wire, heat-shrink tubing, sockets and tubes (more on the tubes later), the fuse and fuse holder, the pilot lamp, screws and locknuts, input jacks, control pots, front and rear faceplates, the fully assembled footswitch for the boost, and a very solid anodized metal chassis.
Point-to-point assembly begins with the filter cap and works through the sockets on up to populating the circuit board, and so on. It’s advisable to have a digital multimeter handy to check each resistor before installation. Our test Valve Factory 18 arrived ready to go save for installing the tubes, which was easy, since this amp does not have a cabinet, so, it's merely a matter of plugging the tubes into the slots on the top of the chassis. Two JJ 6V6s live atop the amp’s crown next to the filter cap, which is also adjacent to the 18-watt power amp. I inserted the provided 12AT7 phase inverter tube and then decided whether to plug the 12AX7 or 12AY7 into the preamp slot.
Totally Tubular
Those aren't the only tubes that can be swapped in the preamp slot. The amp will function happily with 7025, 5751, 12AT7, and 12AU7 valves. But I stuck to the provided 12AX7 and 12AY7. Both performed true to their tendencies. I used the Valve Factory 18 to power a Sam Hill Custom 1x12 cab with a 50-watt Eminence Private Jack and plugged in a two-humbucker Les Paul, a PRS SE Silver Sky, a Dean electric resonator with a lipstick pickup and a piezo, and a Steinberger Spirit. In all these combinations the 12AY7 yielded a little more headroom than the 12AX7, little breakup when pushed, and a cleaner sound profile overall. That is not to say the 12AX7, my favorite of the two, lacks headroom—especially when I plugged into the low-input jack. But playing through the high-input side, the 12AX7 gave me exactly what I want from an amp: enough clean tone to stay articulate along with a gritty patina that speaks the language of rock and blues.
For me, that sound sings best with the tone between 10 and 2 o’clock and the gain between 10 and 12 o’clock which generates genuine old-school breakup. The tone control has great range. Turned hard to the left, it creates a booming, bass dominated voice; hard right, it’s bright and cutting, but never piercing. I did not find an unsatisfying sound within its scope. Dialing the gain to the top and the tone to about 8 o’clock, visions of doom rock danced in my head. With the tone at noon and higher, and the gain all the way up, I could hear the hard rock and metal applications, though the Valve Factory 18 isn’t a 5150 by any means. The volume dial simply makes things louder without significantly impacting the tone, which is ideal.
The Verdict
Short story: I dig this amp in all its sonic variations. Although the Valve Factory 18 is simple to use—and seems relatively easy to build—it is cleverly designed too. Playing it is a joy. So much so that I am disappointed that it’s not gig-ready. Without a cabinet or some cover to protect the tubes, transformers, and filter cap, it’s easily damaged. That said, the power, versatility, tonal range, and sense of accomplishment in building a point-to-point packed with character seems well worth $599.
An all-analog flange and chorus with a lot of character.
Way back in the 2010s, before starting Mr. Black as his pedal-building outlet, when Jack DeVille was releasing effects under his own name, he created the Mod Zero. This multi-modulation unit covered flanging, chorus, rotary effects, and vibrato, and, with a limited run of 250 units, gained a reputation and is long sold out.
Although Mr. Black’s Mod.One is not that pedal, this all-original unit designed by DeVille follows a similar mission, and its reverential name is surely no accident. The Mod.One is a 100-percent-analog modulator that spans chorus, flange, and high-band flange with a unique control set designed for flexibility, sonic excitement, options and a lot of character.
Controls for the Curious
If you come to the Mod.One a little fuzzy on the differences between chorus and flange, here’s a brief explanation: Chorus is created using a slower set of delay times on a secondary, parallel signal. Flange uses shorter delay times, and high-band flange the shortest. On the Mod.One, a pair of knobs—one for lower limit and one for upper limit—allow users to set that range of delay times. The lower limit knob has a max delay of 31 mS and a minimum delay of 1.9 ms. The upper limit knob ranges from 1.9 ms to .5 ms. Within those ranges, you’ll find the difference between chorus and flanging, and the position of the two knobs, rather than a switch, determines which effect you’re using. Ultimately, I’m a firm believer that we should use our ears and not get hung up on definitions when listening to an effect. The Mod.One is a great example. Determining exact delay times and whether you’re chorusing or flanging is inexact but ultimately it doesn’t matter. What matters is what sounds good.
The lower limit/upper limit controls might frustrate purists that want to toggle between a clearly defined chorus and flange tone. But Mod.One’s controls, and its central premise, are all about sound sculpting and opening up creative options. And options abound: LFO speed, for example, reaches up to 20 seconds long when using the tap-tempo switch. Six waveform options also widen the sonic lane.
Let’s Get Exponential
The Mod.One is powerful in a literal sense. The active volume control provides plenty of juice, and is capable of really pushing whatever comes next in your chain. That lends a gooey vibe to everything that passes through the pedal. Whether you use that power to drive your amp or not, the combo of gain and all-analog circuitry give the Mod.One a warm, thick voice. This is not just another metallic-sounding flange device.
I found myself stomping on the Mod.One to add space and texture to rhythms, riffs, and leads that cover a lot of range. Sometimes, I was looking for subtlety—Andy Summers on “Walking on the Moon,” for example. For that, I kept the enhance knob, which determines the intensity of the effect, toward lower settings, and kept the speed on the slowest part of its range, which generates molasses-like movement. For more obvious results, I nudged the speed and enhance knobs. There’s a lot of play in each control, so it doesn’t take much to get things moving in a different direction. The enhance control can even self-oscillate at the top of its range, where more extreme sounds live.
Each of these controls interacts differently with alternate waveform settings, making the possibilities exponential. If there’s one complaint I have about the Mod.One—and I do think it’s just one—it’s that it’s hard to tell which waveform is selected. When experimenting by ear, that’s not the worst thing, but when searching for specific settings, it can be hard to tell if the single LED lights up in a sine, triangle, or other pattern. Eventually I got better at telling the difference, but I didn’t always nail it.
To get some ’70s pseudo-cosmiche tones for a recording project, I rocked the triangle, sine, and hypertriangle waveforms at varying levels of excess. And all three were useful for thickening up high-fretted chordage rather than just the crystalline kind of flange I tend to associate with Prince. I found true excess with the step wave selected and the enhance cranked to its fullest, and there are many experimental sounds to be heard in these wilder places. With so many variables at play, I know there is a lot to be discovered still, which makes the Mod.One compelling.
The Verdict
The Mod.One is a powerful flange and chorus with a strong, recognizable character and wide range. It’s not a do-it-all kind of modulator meant to compete with digital units. But this all-analog device can deliver texture to your sound at dosages that are easily controlled. The unique sculpting possibilities make it exciting and refreshing, and in my time with the pedal, I was impressed with how much I hadn’t yet discovered. It strikes a difficult balance between a quick learning curve and the kind of depth that’ll keep it in heavy rotation for a long time to come. It simply sounds excellent, too.