Style numbers indicate the construction materials and appointments of the guitar, and this system allows for several combinations between body shapes and styles.
Iāve recently received a few requests for information about the differences amongst the various Martin style types. So this month, Iāll briefly cover what those two digits next to the letter or numbers inside your Martin guitar represent.
C.F. Martin & Co. has most certainly been a pioneer in many ways when it comes to building guitars. But in my opinion, one of their most important innovations was how they began naming their guitars, a system that is still in use today. Martin started building guitars in 1833, and by 1898, they were using a standardized system to number their instruments by body shape and style. The first letters or numbers indicate the body shape (0, 00, OM, D, etc.) that are followed by a style number (15, 18, 28, 45, etc.), and separated by a dash. These style numbers indicate the construction materials and appointments of the guitar, and this system allows for several combinations between body shapes and styles. The following are the main style-classifications for Martin guitars.
Martin style types (left to right): Style 0-15, Style 0-21, Style 00-17, and Style D-28.
Style 15: All-mahogany body, no binding, rosewood fretboard and bridge, dot inlays, single grouping of soundhole rings. For many years, the Style 15 was Martinās least-expensive guitar and considered a workhorse.
Style 18: Spruce top, mahogany back and sides, multi-ply binding (5-ply since 1932), rosewood fretboard and bridge, dot inlays, multi-ring soundhole ring. The Style 18 originally featured rosewood for the back and sides, but was changed to mahogany in 1917. Style 18 appointments have appeared on virtually every Martin model and it is their most common style.
Style 21: Spruce top, rosewood back and sides, single-ply black or tortoiseshell binding, rosewood or ebony fretboard and bridge (depending on the model). The Style 21 was traditionally Martinās least-expensive model that used rosewood.
Style 28: Spruce top, rosewood back and sides, multi-ply binding with a white outer layer, ebony fretboard and bridge, dot inlays, a back stripe, and 5/9/5 grouping of soundhole rings. Style 28 instruments are often regarded as the best-playing, best-sounding Martins.
Style 35: Spruce top, 3-piece rosewood back, a bound fretboard, and additional blackand- white lines inlaid beneath the bindings. Otherwise, Style 35 is very similar to the Style 28. The 3-piece back was introduced because large enough pieces of Brazilian rosewood for 2-piece backs were becoming increasingly difficult to obtain in the 1960s.
Style 42: Spruce top, rosewood back and sides, ivory/ ivoroid binding, abalone top-border going around the fretboard, bound-ebony fretboard with snowflake inlays, and an abalone soundhole ring.
Style 45: Similar to the Style 42, except for the additional, abalone-pearl inlays around the sides, back, neck heel, and endpiece. For standard production, the Style 45 represents top-of-the-line appointments for Martin, and many Style 45 instrumentsā including the D-45 and OM-45āare some of the most valuable guitars on the vintage guitar market today.
Other common styles include the Style 16, which was first used on classical guitars in the 1960s, but is now represented on Martinās modern, production instruments. The Style 17āvery similar to the Style 15āwas phased out as a regular production model by 1960 because of their similarities. There is also the Style 41, similar to the Style 42, but without abalone pearl around the fretboard. In fact, there are style classifications for just about every number between 1 and 45āsome only produced in the 1800s, others more modern, and some in very small quantities.
This was and still is a well-devised system. Most Martin instruments can be identified and correctly classified by the number stamped inside the guitar. Of course there are exceptionsāsome minor and some majorāas Martinās styles have changed and evolved over time. Major changes include the switch from Brazilian rosewood to Indian rosewood in 1969 and ivory binding to ivoroid in the early 1900s. But for the most part, this is an enduring classification system.
Martin produces acoustic guitars for just about every price point and there are several books available that explain Martinās styles in detail. With a little research, you can find out if your Martin is indeed a treasure!
A live editor and browser for customizing Tone Models and presets.
IK Multimedia is pleased to release the TONEX Editor, a free update for TONEX Pedal and TONEX ONE users, available today through the IK Product Manager. This standalone application organizes the hardware library and enables real-time edits to Tone Models and presets with a connected TONEX pedal.
You can access your complete TONEX library, including Tone Models, presets and ToneNET, quickly load favorites to audition, and save to a designated hardware slot on IK hardware pedals. This easy-to-use application simplifies workflow, providing a streamlined experience for preparing TONEX pedals for the stage.
Fine-tune and organize your pedal presets in real time for playing live. Fully compatible with all your previous TONEX library settings and presets. Complete control over all pedal preset parameters, including Global setups. Access all Tone Models/IRs in the hardware memory, computer library, and ToneNET Export/Import entire libraries at once to back up and prepare for gigs Redesigned GUI with adaptive resize saves time and screen space Instantly audition any computer Tone Model or preset through the pedal.
Studio to Stage
Edit any onboard Tone Model or preset while hearing changes instantly through the pedal. Save new settings directly to the pedal, including global setup and performance modes (TONEX ONE), making it easy to fine-tune and customize your sound. The updated editor features a new floating window design for better screen organization and seamless browsing of Tone Models, amps, cabs, custom IRs and VIR. You can directly access Tone Models and IRs stored in the hardware memory and computer library, streamlining workflow.
A straightforward drop-down menu provides quick access to hardware-stored Tone Models conveniently sorted by type and character. Additionally, the editor offers complete control over all key parameters, including FX, Tone Model Amps, Tone Model Cabs/IR/VIR, and tempo and global setup options, delivering comprehensive, real-time control over all settings.
A Seamless Ecosystem of Tones
TONEX Editor automatically syncs with the entire TONEX user library within the Librarian tab. It provides quick access to all Tone Models, presets and ToneNET, with advanced filtering and folder organization for easy navigation. At the same time, a dedicated auto-load button lets you preview any Tone Model or preset in a designated hardware slot before committing changes.This streamlined workflow ensures quick edits, precise adjustments and the ultimate flexibility in sculpting your tone.
Get Started Today
TONEX Editor is included with TONEX 1.9.0, which was released today. Download or update the TONEX Mac/PC software from the IK Product Manager to install it. Then, launch TONEX Editor from your applications folder or Explorer.
For more information and videos about TONEX Editor, TONEX Pedal, TONEX ONE, and TONEX Cab, visit:
www.ikmultimedia.com/tonexeditor
The luthierās stash.
There is more to a guitar than just the details.
A guitar is not simply a collection of wood, wire, and metalāit is an act of faith. Faith that a slab of lumber can be coaxed to sing, and that magnets and copper wire can capture something as expansive as human emotion. While itās comforting to think that tone can be calculated like a tax return, the truth is far messier. A guitar is a living argument between its componentsāan uneasy alliance of materials and craftsmanship. When it works, itās glorious.
The Uncooperative Nature of Wood
For me it all starts with the wood. Not just the species, but the piece. Despite what spec sheets and tonewood debates would have you believe, no two boards are the same. One piece of ash might have a bright, airy ring, while another from the same tree might sound like it spent a hard winter in a muddy ditch.
Builders know this, which is why youāll occasionally catch one tapping on a rough blank, head cocked like a bird listening. Theyāre not crazy. Theyāre hunting for a lively, responsive quality that makes the wood feel awake in your hands. But wood is less than half the battle. So many guitarists make the mistake of buying the lumber instead of the luthier.
Pickups: Magnetic Hopes and Dreams
The engine of the guitar, pickups are the part that allegedly defines the electric guitarās voice. Sure, swapping pickups will alter the tonality, to use a color metaphor, but they can only translate whatās already there, and thereās little percentage in trying to wake the dead. Yet, pickups do matter. A PAF-style might offer more harmonic complexity, or an overwound single-coil may bring some extra snarl, but hereās the thing: Two pickups made to the same specs can still sound different. The wire tension, the winding pattern, or even the temperature on the assembly line that day all add tiny variables that the spec sheet doesnāt mention. Donāt even get me started about the unrepeatability of āhand-scatter winding,ā unless youāre a compulsive gambler.
āOne piece of ash might have a bright, airy ring, while another from the same tree might sound like it spent a hard winter in a muddy ditch.ā
Wires, Caps, and Wishful Thinking
Inside the control cavity, the pots and capacitors await, quietly shaping your tone whether you notice them or not. A potentiometer swap can make your volume taper feel like an on/off switch or smooth as an aged Tennessee whiskey. A capacitor change can make or break the tone controlās usefulness. Itās subtle, but noticeable. The kind of detail that sends people down the rabbit hole of swapping $3 capacitors for $50 āvintage-specā caps, just to see if they can āfeelā the mojo of the 1950s.
Hardware: The Unsung Saboteur
Bridges, nuts, tuners, and tailpieces are occasionally credited for their sonic contributions, but theyāre quietly running the show. A steel block reflects and resonates differently than a die-cast zinc or aluminum bridge. Sloppy threads on bridge studs can weigh in, just as plate-style bridges can couple firmly to the body. Tuning machines can influence not just tuning stability, but their weight can alter the way the headstock itself vibrates.
Itās All Connected
Then thereās the neck jointāthe place where sustain goes to die. A tight neck pocket allows the energy to transfer efficiently. A sloppy fit? Some credit it for creating the infamous cluck and twang of Fender guitars, so pick your poison. One of the most important specs is scale length. A longer scale not only creates more string tension, it also requires the frets to be further apart. This changes the feel and the sound. A shorter scale seems to diminish bright overtones, accentuating the lows and mids. Scale length has a definite effect on where the neck joins the body and the position of the bridge, where compromises must be made in a guitarās overall design. There are so many choices, and just as many opportunities to miss the mark. Itās like driving without a map unless youāve been there before.
Alchemy, Not Arithmetic
At the end of the day, a guitarās greatness doesnāt come from its spec sheet. Itās not about the wood species or the coil-wire gauge. Itās about how it all conspires to either soar or sink. Two guitars, built to identical specs, can feel like long-lost soulmates or total strangers. All of these factors are why mix-and-match mods are a long game that can eventually pay off. But thatās the mystery of it. You canāt build magic from a parts list. You canāt buy mojo by the pound. A guitar is more than the sum of its partsāitās a sometimes unpredictable collaboration of materials, choices, and human touch. And sometimes, whether in the hands of an experienced builder or a dedicated tinkerer, it just works.
MT 15 and Archon 50 Classic amplifiers offer fresh tones in release alongside a doubled-in-size Archon cabinet
PRS Guitars today released the updated MT 15 and the new Archon Classic amplifiers, along with a larger Archon speaker cabinet. The 15-watt, two-channel Mark Tremonti signature amp MT 15 now features a lead channel overdrive control. An addition to the Archon series, not a replacement, the 50-watt Classic offers a fresh voice by producing retro rock āclassicā tones reminiscent of sound permeating the radio four and five decades ago. Now twice the size of the first Archon cabinet, the Archon 4x12 boasts four Celestion V-Type speakers.
MT 15 Amplifier Head
Balancing aggression and articulation, this 15-watt amp supplies both heavy rhythms and clear lead tones. The MT 15 revision builds off the design of the MT 100, bringing the voice of the 100ās overdrive channel into its smaller-format sibling. Updating the model, the lead channel also features a push/pull overdrive control that removes two gain stages to produce vintage, crunchier āmid gainā tones. The clean channel still features a push/pull boost control that adds a touch of overdrive crunch. A half-power switch takes the MT to 7 watts.
āSeven years ago, we released my signature MT 15 amplifier, a compact powerhouse that quickly became a go-to for players seeking both pristine cleans and crushing high-gain tones. In 2023, we took things even further with the MT 100, delivering a full-scale amplifier that carried my signature sound to the next level. That inspired us to find a way to fit the 100's third channel into the 15's lunchbox size,ā said Mark Tremonti.
āToday, Iām beyond excited to introduce the next evolution of the MT15, now featuring a push/pull overdrive control on the Lead channel and a half-power switch, giving players even more tonal flexibility to shape their sound with a compact amp. Canāt wait for you all to plug in and experience it!ā
Archon Classic Amplifier Head
With a refined gain structure from the original Archon, the Archon Classicās lead channel offers a wider range of tones colored with gain, especially in the midrange. The clean channel goes from pristine all the way to the edge of breakup. This additional Archon version was developed to be a go-to tool for playing classic rock or pushing the envelope into modern territory. The Archon Classic still features the originalās bright switch, presence and depth controls. PRS continues to stock the Archon in retailers worldwide.
āThe Archon Classic is not a re-issue of the original Archon, but a newly voiced circuit with the lead channel excelling in '70s and '80s rock tones and a hotter clean channel able to go into breakup. This is the answer for those wanting an Archon with a hotrod vintage lead channel gain structure without changing preamp tube types, and a juiced- up clean channel without having to use a boost pedal, all wrapped up in a retro-inspired cabinet design,ā said PRS Amp Designer Doug Sewell.
Archon 4x12 Cabinet
As in the Archon 1x12 and 2x12, the mega-sized PRS Archon 4x12 speaker cabinet features Celestion V-Type speakers and a closed-back design, delivering power, punch, and tight low end. Also like its smaller brethren, the 4x12 is wrapped in durable black vinyl and adorned with a British-style black knitted-weave grill cloth. The Archon 4x12 is only the second four-speaker cabinet in the PRS lineup, next to the HDRX 4x12.
PRS Guitars continues its schedule of launching new products each month in 2025. Stay tuned to see new gear and 40 th Anniversary limited-edition guitars throughout the year. For all of the latest news, click www.prsguitars.com/40 and follow @prsguitars on Instagram, Tik Tok, Facebook, X, and YouTube.
The Austin-based guitarist sticks with a tried-and-true combo of American guitars and British amps.
If youāve been on the path of this springās Rhett Schull/Zach Person tour, youāve been treated to one of the coolest rock ānā roll double bills criss-crossing North America this year. Person, who is based in Austin, put out his second full-length record, Letās Get Loud, in March 2024, and it was packed with alt-, blues-, and psychedelic-rock anthems built around his take-no-prisoners playing.
This year, Person is road-dogginā it around the United States as a two-piece unit with just a drummer, and PGās Chris Kies caught up with him before he and Shull played the Eastside Bowl in Madison, Tennessee, to see what goods Person is bringing for this springās shows.
Brought to you by DāAddario
Customized Custom
This Gibson Jimi Hendrix 1967 Custom SG came from Gibsonās custom shop, and for Person, an SG with humbuckers is a hard combination to beat. He removed the Maestro trem system and had a tailpiece installed for tuning stability on the road, and he subjected the neck humbucker to a āJimmy Page mod,ā which entails removing the pole pieces to get closer to single-coil tones. This SG stays in standard tuning, with Ernie Ball or DāAddario strings (usually .010ā.046s). Person digs Dunlop Flow Grip .88 mm picks.
Brown Sound
Person brought this 1967 Gibson SG Special back to life with a list of modifications and upgrades, including new pickups and a refinish, but its wood, neck shape, and original frets all made it worth it to him. The neck shape is narrow but chunky in Personās hands, landing somewhere near the feel of Tyler Bryantās 1962 Stratocaster. The pickups now are OX4 P-90s, and like the Custom, this oneās had its Maestro system amputated.
Jeannie Comes Alive
One Thanksgiving at his in-lawsā home in Dallas, Person mentioned how badly he wanted a Gibson LG-2 acoustic. As it happened, his father-in-law suspected his mother had one, which had been relegated to storage in a shed. Person and his wifeās father ventured through rain to dig it out, and sure enough, a very beat up LG-1 was withering away in its case. No local techs in Austin thought it was worth saving, except for Elaine Filion, who was used to taking on bigger restoration projects. Filion succeeded, taking the top off and installing an X-bracing system to turn the LG-1 into an LG-2-style guitar. Now, itās got an L.R. Baggs pickup and bears the nameplate āJeannieā on its headstock to commemorate his wifeās grandma, the original owner. Jeannie usually stays home, but Person brought her out specially for the Rundown.
Marshall Muscle
This Marshall JTM45 MkII is Personās usual go-to. It runs just at breakup volume and gets pushed with some variation of a Pro Co RAT, his favorite dirt box.
Supro Signature
This Super Black Magick Reverb, Tyler Bryantās signature, is along for the ride as a backup to the Marshall.
Zach Personās Pedalboard
Person has done tours with just an overdrive pedal and nothing else, so by comparison, this two-tiered Vertex board is luxurious. Still, itās compact and carries all he needs at the moment. The JHS Pack Rat is the core sound, set fairly heavy and dirty. The rest includes a Boss TU-3, EarthQuaker Devices Double Hoof, Vox Clyde McCoy wah, Boss BF-2, DigiTech Drop, Strymon El Capistan, and an Interstellar Audio Machines Marsling Octafuzzdrive. A TC Helicon Mic Mechanic rides along as a vocal effect so Person can keep control over his voice from night to night.