Single-coils and humbuckers arenāt the only game in town anymore. From hybrid to hexaphonic, Joe Naylor, Pete Roe, and Chris Mills are thinking outside the bobbin to bring guitarists new sonic possibilities.
Electric guitar pickups werenāt necessarily supposed to turn out the way they did. We know the dominant models of single-coils and humbuckersāfrom P-90s to PAFsāas the natural and correct forms of the technology. But the history of the 6-string pickup tells a different story. They were mostly experiments gone right, executed with whatever materials were cheapest and closest at hand. Wartime embargos had as much influence on the development of the electric guitar pickup as did any ideas of function, tone, or sonic qualityāmaybe more so.
Still, we think we know what pickups should sound and look like. Lucky for us, there have always been plenty of pickup builders who arenāt so convinced. These are the makers who devised the ceramic-magnet pickup, gold-foils, and active, high-gain pickups. In 2025, nearly 100 years after the first pickup bestowed upon a humble lap-steel guitar the power to blast our ears with soundwaves, thereās no shortage of free-thinking, independent wire-winders coming up with new ways to translate vibrating steel strings into thrilling music.
Joe Naylor, Chris Mills, and Pete Roe are three of them. As the creative mind behind Reverend Guitars, Naylor developed the Railhammer pickup, which combines both rail and pole-piece design. Mills, in Pennsylvania, builds his own ZUZU guitars with wildly shaped, custom-designed pickups. And in the U.K., Roe developed his own line of hexaphonic pickups to achieve the ultimate in string separation and note definition. All three of them told us how they created their novel noisemakers.
Joe Naylor - Railhammer Pickups
Joe Naylor, pictured here, started designing Railhammers out of personal necessity: He needed a pickup that could handle both pristine cleans and crushing distortion back to back.
Like virtually all guitar players, Joe Naylor was on a personal tone quest. Based in Troy, Michigan, Naylor helped launch Reverend Guitars in 1996, and in the late ā90s, he was writing and playing music that involved both clean and distorted movements in one song. He liked his neck pickup for the clean parts, but it was too muddy for high-gain playing. He didnāt want to switch pickups, which would change the sound altogether.
He set out to design a neck pickup that could represent both ends of the spectrum with even fidelity. That led him to a unique design concept: a thin, steel rail under the three thicker, low-end strings, and three traditional pole pieces for the higher strings, both working with a bar magnet underneath. At just about a millimeter thick, rails, Naylor explains, only interact with a narrow section of the thicker strings, eliminating excess low-end information. Pole pieces, at about six millimeters in diameter, pick up a much wider and less focused window of the higher strings, which works to keep them fat and full. āIf you go back and look at some of the early rail pickupsāBill Lawrenceās and things like thatāthe low end is very tight,ā says Naylor. āItās almost like your tone is being EQād perfectly, but itās being done by the pickup itself.ā
That idea formed the basis for Railhammer Pickups, which began official operations in 2012. Naylor built the first prototype in his basement, and it sounded great from the start, so he expanded the format to a bridge pickup. That worked out, too. āI decided, āMaybe Iām onto something here,āā says Naylor. Despite the additional engineering, Railhammers have remained passive pickups, with fairly conventional magnetsāincluding alnico 5s and ceramicsāwires, and structures. Naylor says this combines the clarity of active pickups with the āthick, organic toneā of passive pickups.
āItās almost like your tone is being EQād perfectly, but itās being done by the pickup itself.ā āJoe Naylor
The biggest difficulty Naylor faced was in the physical construction of the pickups. He designed and ordered custom molds for the pickupās bobbins, which cost a good chunk of money. But once those were in hand, the Railhammers didnāt need much fiddling. Despite their size differences, the rail and pole pieces produce level volume outputs for balanced response across all six strings.
Naylorās formula has built a significant following among heavy-music players. Smashing Pumpkinsā Billy Corgan is a Railhammer player with several signature models; ditto Reeves Gabrels, the Cure guitarist and David Bowie collaborator. Bob Balch from Fu Manchu and Kyle Shutt from the Sword have signatures, too, and other players include Code Orangeās Reba Meyers, Gogol Bordelloās Boris Pelekh, and Voivodās Dan āChewyā Mongrain.
Chris Mills - ZUZU Pickups
When Chris Mills started building his own electric guitars, he decided to build his own components for them, too. He suspected that in the course of the marketās natural thinning of the product herd, plenty of exciting options had been left unrealized. He started working with non-traditional components and winding in non-traditional ways, which turned him on to the idea that things could be done differently. āI learned early on that there are all kinds of sonic worlds out there to be discovered,ā says Mills.
Eventually, he zeroed in on the particular sound of a 5-way-switch Stratocaster in positions two and four: Something glassy and clear, but fatter and more dimensional. In Millsā practice, ādimensionalā refers to the varying and sometimes simultaneous sound qualities attained from, say, a finger pad versus a fingernail. āI didnāt want just one thing,ā says Mills. āI wanted multiple things happening at once.ā
Mills wanted something that split the difference between a humbuckerās fullness and the Stratās plucky verve, all in clean contexts. But he didnāt want an active pickup; he wanted a passive, drop-in solution to maximize appeal. To achieve the end tone, Mills wired his bobbins in parallel to create āinterposed signal processing,ā a key piece of his patented design. āI found that when I [signal processed] both of them, I got too much of one particular quality, and I wanted that dimensionality that comes with two qualities simultaneously, so that was essential,ā explains Mills.
Mills loved the sound of alnico 5 blade magnets, so he worked with a 3D modeling engineer to design plastic bobbins that could accommodate both the blades and the number of turns of wire he desired. This got granularāa millimeter taller, a millimeter widerāuntil they came out exactly right. Then came the struggle of fitting them into a humbucker cover. Some key advice from experts helped Mills save on space to make the squeeze happen.
Millsā ZUZUbuckers donāt have the traditional pole pieces and screws of most humbuckers, so he uses the screw holes on the cover as āportholesā looking in on a luxe abalone design. And his patented ācurved-coilā pickups feature a unique winding method to mix up the tonal profile while maintaining presence across all frequencies.
āI learned early on that there are all kinds of sonic worlds out there to be discovered.ā āChris Mills
Mills has also patented a single-coil pickup with a curved coil, which he developed to get a different tonal quality by changing the relative location of the poles to one another and to the bridge. Within that design is another patented design feature: reducing the number of turns at the bass end of the coil. āPretty much every pickup maker suggests that you lower the bass end [of the pickup] to compensate for the fact that it's louder than the treble end,ā says Mills. āThat'll work, but doing so alters the quality and clarity of the bass end. My innovation enables you to keep the bass end up high toward the strings.ā
Even Millsā drop-in pickups tend to look fairly distinct, but his more custom designs, like his curved-coil pickup, are downright baroque. Because his designs donāt rely on typical pickup construction, there arenāt the usual visual cues, like screws popping out of a humbucker cover, or pole pieces on a single-coil pickup. (Mills does preserve a whiff of these ideals with āportholesā on his pickup covers that reveal that pickup below.) Currently, heās excited by the abalone-shell finish inserts heās loading on top of his ZUZUbuckers, which peek through the aforementioned portholes.
āIt all comes down to the challenge that we face in this industry of having something thatās original and distinctive, and also knowing that with every choice you make, you risk alienating those who prefer a more traditional and familiar look,ā says Mills.
Pete Roe - Submarine Pickups
Roeās stick-on Submarine pickups give individual strings their own miniature pickup, each with discrete, siloed signals that can be manipulated on their own. Ever wanted to have a fuzz only on the treble strings, or an echo applied just to the low-register strings? Submarine can achieve that.
Pete Roe says that at the start, his limited amount of knowledge about guitar pickups was a kind of superpower. If he had known how hard it would be to get to where he is now, he likely wouldnāt have started. He also wouldāve worked in a totally different way. But hindsight is 20/20.
Roe was working in singer-songwriter territory and looking to add some bass to his sound. He didnāt want to go down the looping path, so he stuck with octave pedals, but even these werenāt satisfactory for him. He started winding his own basic pickups, using drills, spools of wire, and magnets heād bought off the internet. Like most other builders, he wanted to make passive pickupsāhe played lots of acoustic guitar, and his experiences trying to find last-minute replacement batteries for most acoustic pickups left him scarred.
Roe started building a multiphonic pickup: a unit with multiple discrete āpickupsā within one housing. In traditional pickups, the vibration from the strings is converted into a voltage in the 6-string-wide coils of wire within the pickup. In multiphonic pickups, there are individual coils beneath each string. That means theyāre quite tinyāRoe likens each coil to the size of a Tylenol pill. āBecause youāre making stuff small, it actually works better because itās not picking up signals from adjacent strings,ā says Roe. āIf youāve got it set up correctly, thereās very, very little crosstalk.ā
With his Submarine Pickups, Roe began by creating the flagship Submarine: a quick-stick pickup designed to isolate and enhance the signals of two strings. The SubPro and SubSix expanded the concept to true hexaphonic capability. Each string has a designated coil, which on the SubPro combine into four separate switchable outputs; the SubSix counts six outputs. The pickups use two mini output jacks, with triple-band male connectors to carry three signals each. Explains Roe: āIf you had a two-channel output setup, you could have E, A, and D strings going to one side, and G, B, and E to the other. Or you could have E and A going to one, the middle two strings muted, and the B and E going to a different channel.ā Each output has a 3-position switch, which toggles between one of two channels, or mute.
āIām just saying thereās some unexplored territory at the beginning of the signal chain. If you start looking inside your guitar, then it opens up a world of opportunities.ā āPete Roe
This all might seem a little overly complicated, but Roe sees it as a simplification. He says when most people think about their sound, they see its origin in the guitar as fixed, only manipulatable later in the chain via pedals, amp settings, or speaker decisions. āIām not saying thatās wrong,ā says Roe. āIām just saying thereās some unexplored territory at the beginning of the signal chain. If you start looking inside your guitar, then it opens up a world of opportunities which may or may not be useful to you. Our customers tend to be the ones who are curious and looking for something new that they canāt achieve in a different way.
āIf each string has its own channel, you can start to get some really surprising effects by using those six channels as a group,ā continues Roe. āYou could pan the strings across the stereo field, which as an effect is really powerful. You suddenly have this really wide, panoramic guitar sound. But then when you start applying familiar effects to the strings in isolation, you can end up with some really surprising textural sounds that you just canāt achieve in any other way. You can get some very different sounds if youāre applying these distortions to strings in isolation. You can get that kind of lead guitar sound that sort of cuts through everything, this really pure, monophonic sound. That sounds very different because what you donāt get is this thing called intermodulation distortion, which is the muddiness, essentially, that you get from playing chords that are more complex than roots and fifths with a load of distortion.ā And despite the powerful hardware, the pickups donāt require any soldering or labor. Using a ānanosuctionā technology similar to what geckos possess, the pickups simply adhere to the guitarās body. Submarineās manuals provide clear instruction on how to rig up the pickups.
āAn analogy I like to use is: Say youāre remixing a track,ā explains Roe. āIf you get the stems, you can actually do a much better job, because you can dig inside and see how the thing is put together. Essentially, Submarine is doing that to guitars. Itās allowing guitarists and producers to look inside the instrument and rebuild it from its constituent parts in new and exciting ways.ā
Hereās part two of our look under the hood of the funky rhythm guitar masterās signature 6-string.
Hello and welcome back to Mod Garage. In this edition, weāre continuing our journey through the Fender Cory Wong Stratocaster wiring, bringing it all together.In the previous installment, the last feature on the funky 6-stringerās signature axe that we discussed was the master volume pot and the corresponding treble-bleed circuit. Now, letās continue with this guitarās very special configuration of the tone pots.
Tone pot with Fender Greasebucket tone system:
This 250k tone pot is a standard CTS pot with a 90/10 audio taper found in all U.S.-built Fender guitars. The Cory Wong guitar uses the Fender Greasebucket system, which is added to the pot as a ready-to-solder PCB. The Greasebucket PCB is also available individually from Fender (part #7713546000), though you can use conventional electronic parts for this.
Fender introduced this feature in 2005 on some of the Highway One models and some assorted Custom Shop Strats. The Greasebucket name (which is a registered Fender trademark, by the way) is my favorite of Fenderās marketing names, but donāt let it fool you: Your tone will get cleaner with this modification, not greasy and dirty.
According to Fender, the Greasebucket tone circuit reduces high frequencies without adding bass as the tone knob is turned down. Donāt let that description confuse you. A standard Strat tone control does not add any bass frequencies! As you already know, with a passive system you canāt add anything that isnāt already there. You can reshape the tone by deemphasizing certain frequencies and making others more prominent. Removing highs makes lows more apparent and vice versa. In addition, the use of inductors (which is how a passive pickup behaves in a guitar circuit) and capacitors can create resonant peaks and valleys (band-passes and notches), further coloring the overall tone.
Cory Wong bringing the funk onstage.
This type of band-pass filter only allows certain frequencies to pass through, while others are blocked. The standard tone circuit in a Strat is called a variable low-pass filter (or a treble-cut filter), which only allows the low frequencies to pass through while the high frequencies get sent to ground via the tone cap.
The Greasebucketās band-pass filter is a combination of a high-pass and a low-pass filter. This is supposed to cut high frequencies without āaddingā bass, which has mostly to do with the resistor in series with the pot. That resistor means the control will never get to zero. You can get a similar effect by simply not turning the Stratās standard tone control all the way down. (The additional cap on the wiper of the Greasebucket circuit complicates things a bit, though; together with the pickups it forms an RLC circuit, but I really donāt want to get into that here.)
The standard Fender Greasebucket tone system is used in the Cory Wong Strat, which includes a 0.1 Ī¼F cap and a 0.022 uF cap, along with a 4.7k-ohm resistor in series. These are the values used on the PCB, and without the PCB it looks like the illustration at the top of this column.
Push-push tone pot with preset overwriting function:
The lower tone pot assigned to the bridge pickup is a 250k audio push-push pot with a DPDT switch. The switch is used to engage a preset sound by overwriting the 5-way pickup-selector switch, no matter what switching position it is in. The preset functionality has a very long tradition in the house of Fender, dating back to the early ā50s, when Leo Fender designed a preset bass sound on position 3 (where the typical neck position is on a modern guitar) of the Broadcaster (and later the Telecaster) circuit. Wong loves the middle-and-neck-in-parallel pickup combination, so thatās the preset sound his push-push tone pot is wired for.
The neck pickup has a dedicated tone control while the middle pickup doesnāt, which is also another interesting feature. This means that when you hit the push-push switch, you will engage the neck and middle pickup together in parallel, no matter what you have dialed in on the 5-way switch. Hit the push-push switch again, and the 5-way switch is back to its normal functionality. Instead of a push-push pot, you can naturally use a push-pull pot or a DPDT toggle switch in combination with a normal 250k audio pot.
Here we go for the wiring. For a much clearer visualization, I used the international symbol for ground wherever possible instead of drawing another black wire, because we already have a ton of crossing wires in this drawing. I also simplified the treble-bleed circuit to keep things clearer; youāll find the architecture of it with the correct values in the previous column.
Cory Wong Strat wiring
Courtesy of singlecoil.com
Wow, this really is a personalized signature guitar down to the bone, and Wong used his opportunity to create a unique instrument. Often, signature instruments deliver custom colors or very small aesthetic or functional details, so the Cory Wong Stratocaster really stands out.
Thatās it! In our next column, we will continue our Stratocaster journey in the 70th year of this guitar by having a look at the famous Rory Gallagher Stratocaster, so stay tuned!
Until then ... keep on modding!
Ever think of adding EQ to your signal chain? Hereās a brief but definitive guide on how to get started.
Equalization is a powerful sonic-sculpting tool. Almost immediately after we figured out how to convert the music we hear into electronic waveforms, electronic engineers devised circuits to manipulate those signals by attenuating and accentuating different frequency bands. In recording studios, equalization can subtract bass from a boomy kick drum or add sibilance to a breathy vocal. In sound reinforcement, we can equalize the response of a PA in a room with less than ideal resonances.
These resonances add or subtract energy from the PA output and present an uneven response to the audience. Equalization adjusts the PAās frequency response to account for those room dynamics and makes the response even, or equal, across all bands.
Human hearing is usually understood to extend from 20 Hz to 20 kHz. The frequency range of the guitar is much more limited, typically ranging from around 80 Hz to 6 kHz. Interestingly, the human voice shares a great deal of the same bandwidth, meaning the same ears and audio-processing centers that are fine-tuned for distinguishing the differences in voices can readily adapt to distinguish the differences in guitar tones. Accordingly, small adjustments in frequency equalization can have big effects in the ears of the listener, making a world of difference in a guitarās fundamental sound. No amount of EQ will turn a red-knob Fender Twin into a Marshall plexi, but a little EQ might be all that stands between the sound in your head and the gear that you already own.
There are a host of EQ guitar pedal options on the market, from the venerable Boss GE-7 graphic equalizer (which contains preset frequency centers and bandwidths) to the new-fangled Empress ParaEq (which contains fully adjustable frequency centers and bandwidths). If youāre an EQ neophyte, stick with a graphic EQ. The sliders will be spaced evenly, and you can train your ear to hear the difference between frequencies before graduating to the laissez-faire frequency selection of a parametric EQ. As youāre learning what each frequency does for your sound, pull the fader all the way down and listen carefully, then push it all the way up and do the same. Listening to the EQ at these extremes may help you key in on the change at a more tasteful setting. Make a habit of turning the effect on and off to sample what it is doing relative to your unaffected signal.
It may be helpful to think of EQ as a flavoring agent. Like a little salt enhances a dishās existing flavors, EQ can make for some tasty tones. If you have an overdrive that youād like to make a little more āscreamer,ā add a bit of 800 Hz. If your sound has got a little too much of that green pedal honk, cut 800 Hz just a hair. If your chunky rhythm sound lacks clarity, cut from 200ā250 Hz. This is where the low-midrange mud lives.
āIf the unobtanium overdrive du jour is a Ferrari, then an EQ is like a Honda Accord.ā
Almost every move has a practical reciprocal. You can add clarity by cutting low mids or boosting high mids by a commensurate amount. I normally recommend cutting first as a rule of thumb, as excessive boost can make things squirrelly, due to increased overall gain. That said, boosting around 500 Hz can add midrange body; around 2 kHz can help a neck pickup cut through the mix; and around 5 kHz can add airy click to your sound.
As you tweak, remember the upper-frequency bands will have more of an effect when placed after overdrive and distortion in your signal chain, as those processes generate harmonics that add energy to higher frequencies. But, there are no hard and fast rules. Adjust with listening ears! Your sound is like a ball of clay, and EQ can help you shape it just how youād like.
Experiment with EQ placement as well. Apply EQ after dirt in order to carve your signal like the channel strip on a mixing console. Apply EQ before overdrives to cause them to saturate sooner at specific frequencies. This can greatly affect a pedalās feel as well as sound.
If the unobtanium overdrive du jour is a Ferrari, then an EQ is like a Honda Accord. Itās practical, modest, and functional, but most people donāt dream about owning one. However, with the ability to subtly sculpt and cut or boost in the extreme, EQ can get you where you want to go.