
Welcome to the tube zoo, where you’ll get to know about the nature and habits of output and preamp tubes. And how they perform in the wilds of amplification—and in your own amp.
Of all the tonally tweakable elements in the extensive chain of components that define your sound as a guitarist, the tubes tucked into your amplifier might be the most enigmatic. Working symbiotically with the circuits and transformers housed alongside them, these tubes help to determine the way your playing is translated, from the signal produced at the guitar’s pickups to the sound waves ultimately pumped into the air by the speaker and broadcast to listeners’ ears. Given their role in the signal chain, tubes can greatly influence the feel of your playing, as well as the sound.
Alternative guitar amp options have threatened to bury tubes for six decades—since the arrival of solid-state amps in the 1960s to the proliferation for modeling amps in recent years. Yet the rumors of the tube amp’s death have been greatly exaggerated, and they continue to be used by more pro and hobby players around the world than any other type of amplifier. Even the sounds of modeling rigs are based on the tone and playing feel of myriad classic tube circuits.
Didacts will occasionally argue that tubes themselves don’t have a sound. Certainly, that’s true as far as the silence you’ll hear if you unplug a tube and hold it up to your ear. So, sure, the design and circuit of the amp in which any tube is used sets the foundation of its overall tone. But tubes do very much enhance or define certain sonic characteristics of amps, which is something you discover pretty quickly when you swap one tube type for another (in amps that allow this)—only to discover a distinct shift in your amp’s tonal personality.
“A survey of many classic and boutique amps usually reveals specific tube types enhancing distinct sonic characteristics time and again.”
It’s probably best, therefore, to think of many classic amps and traditional tube types as working hand-in-hand to present familiar sonic templates. For that reason, throughout this guide we’ll nod to a handful of familiar amplifier makes and models when referencing many tubes—and output tubes in particular, since the most common preamp tubes are often interchangeable between drastically different amp designs.
Also, while it might be true that a good amp designer can coax nearly any tone out of any conventional type of output tube, a survey of many classic and boutique amps usually reveals specific tube types enhancing distinct sonic characteristics time and again. For example, Dick Denney might have built the most famous iterations of the Vox AC15 and AC30 around EL84s, because they were plentiful and affordable, but now that those sounds have been blueprinted, we know which tubes to turn to for consistently achieving them.
Let’s start our guide with a look at the main output tube types used in guitar amps, then we’ll move on to common preamp tubes. Per-tube prices quoted are for current or recently manufactured examples made in Russia, Eastern Europe, and China, as surveyed at reputable dealers such as Mojotone, Antique Electronic Supply, Sweetwater, Telefunken, the Tube Doctor, EHX, and the Tube Store. Tags for special or limited versions of tubes are typically a little higher.
Output Tubes
Output tubes (also called power tubes) are the larger of the tube types within your amp and are usually found toward the opposite end of the chassis from the amp’s input. These tubes receive the guitar signal that the preamp tubes have already amplified slightly and amplify it much more, into a signal that can be pumped through a speaker via an output transformer. Let’s take a family-by-family look at these tubes
6L6 Types
Tone Template: Big American
Price: $25 to $50 street
Courtesy of The Tube Doctor
Used in pairs for 35 to 50 watts or quads for 80 to 100 watts, 6L6s are the classic big American tube, probably best defined by the sound of the larger, legendary Fender amps of the ’50s and ’60s: the tweed Bassman, the black-panel Twin Reverb, the Super Reverb, and more. This tube has a bold, solid voice with firm lows and prominent highs. The sound can almost be strident in loud, clean amps that were designed for maximum headroom, or silkier and more rounded in smaller amps—like many of the tweed era—that allow for easier and earlier clipping.
Different 6L6s offer varying types of tonal performance. The 6L6GB and 6L6GC, for example, are a little softer/rounder and firmer/bolder, respectively, while the latter is also capable of handling higher voltages and delivers later breakup with increased headroom. (Note: These aren’t better/best distinctions. Either tube may be preferable according to your sonic needs, or might be required by your amp’s specifications.) A “W” designation on either of these denotes a more rugged tube originally intended for military use.
“6L6s are the classic big American tube, probably best defined by the sound of the larger, legendary Fender amps of the ’50s and ’60s.”
The original 5881 tubes manufactured in the U.S. in the ’50s and ’60s are a tougher sibling of the 6L6. They put out a little less power and break up a little earlier than the 6L6GC. Currently manufactured 5881s, however, are usually 6L6 types that have been relabeled, and therefore don’t vary greatly in their characteristics. If you’re lucky, you might find some new old stock (NOS) originals (see sidebar at bottom of page).
In many amps, all of the tubes mentioned in this 6L6 section can be swapped for each other, with some caveats. Always refer to your amp manufacturer’s instructions before doing so, and be aware that higher-powered amps designed with 6L6GCs in mind might run at voltages too high for 6L6GBs or 5881s.
For a further sonic reference point, 6L6 types also appear in many vintage Gibson, Silvertone, Danelectro, and Valco amps, plus early Marshall JTM45s, many Mesa/Boogie Mark Series models, Dumbles, many powerful Soldano and Bogner amps, and boutique favorites like the Carr Rambler and Dr. Z Z-28 MkII.
EL34s
Tone Template: British Stack
Price: $23 to $50 street
Photo courtesy of Telefunken
EL34s, used in pairs for 45 to 60 watts or quads for 100 to 120 watts, are responsible for the archetypal 50- and 100-watt tone from across the Atlantic, as delivered by the classic Marshall plexi variations. It is characteristically thick and mid-forward, with round lows, crispy highs, and a slightly granular texture overall—and smoothly compressed and aggressive when driven hard. The EL34 can also deliver tighter and bone-crunchingly punchy sounds to arena-rock stages in amps that can be pushed up to 120 watts with sets of four tubes, such as the Hiwatt DR103. That’s thanks to this tube’s ability to handle very high plate voltages.
The EL34 is featured in post-1967 Marshalls like the JMP50 and JMP100 plexi and metal-panel amps, later Master Model 2203s and 2204s, JCM800s, and the majority of modern models. These tubes are also used by (as mentioned) Hiwatt, Orange, and Sound City, and in Vox’s AC50 and AC100, as well as several amps from Selmer and Traynor. Contemporary makers seeking that Brit-stack kerrang! at full volume usually turn to EL34s, so they are also part of the formulation of high-gain-design builds from Rivera, Bogner, Friedman, and Mesa/Boogie, as well as the Matchless Clubman, TopHat Emplexador, and Komet K60.
KT66s
Tone Template: Bold British
Price: $45 to $70 street
Courtesy of The Tube Doctor
This large, imposing Coke-bottle of a tube was Britain’s response to the American 6L6. As such, it has broadly similar characteristics and produces roughly the same wattage in pairs and quads, although it can handle higher voltages and adds its own sonic personality to the brew. Given this, the KT66 can be used in place of 6L6GCs in many amps, although you should check your manufacturer’s guidelines just to be safe.
The KT66 is probably best known, in vintage amps, for its use in many Marshall JTM45s of the early ’60s, which started with 6L6s and 5881s (following their inspiration of Fender’s tweed Bassman circuit) before moving to the British-made tube when the American “valves,” as the Brits call tubes, became scarce in the U.K. In recent decades, the KT66 has been rediscovered by many boutique amp makers. It’s the tube of choice for the Dr. Z Route 66 and the original single-ended Carr Mercury, among others. Along with its good balance and clarity throughout the frequency range, the KT66 generally offers a slightly bolder low end than the 6L6, and what some players hear as a sweeter, juicier midrange response—making it something of a good blend of the 6L6GC and the EL34.
6550s and KT88s
Tone Template: Punchy, Powerful, and Surprisingly Versatile
Price: $50 to $80 street
Courtesy of Telefunken
A big, powerful tube capable of producing massive wattage in the right circuit, the 6550 has also been used somewhat against type by a surprising number of creative boutique amp makers. In the late ’60s and ’70s, the 6550 was more likely to be found in bass amps—six of them created the original Ampeg SVT’s stadium-rumbling tones—but was also used, for a time, in Marshall guitar amps exported to the U.S. because its ruggedness and greater availability eased servicing issues.
Sonically, the 6550 is bold, clear, tight, and well-composed, with very little compression when pushed, but an aggressive, muscular crunch when it does begin to break up. Some makers—George Alessandro, for one—have cleverly used it to achieve more nuanced tones, but usually it’s a tube that’s employed when massive wattage is the ultimate goal.
Courtesy of The Tube Doctor
Although not identical to the 6550, the KT88 is a common substitute that presents many of the same characteristics. Sonically, it leans somewhere between the 6550 and EL34, but with the tighter low end and massive output of the former. It can usually be swapped directly for a 6550, and often for an EL34, with some slight modifications (as ever, consult your manufacturer or a good amp tech). The mighty 200-watt Marshall Major is the best vintage reference point for this output tube, but it has also been used more recently in the RedPlate BluesMachine and Fryette Sig:X, among others—generally amps seeking either high headroom or a greater proportion of preamp-tube overdrive to output-tube distortion.
“If you’re curious about the sonic effects of variations in 12AX7s that can be used in your amp, it’s worth trying a few to check out the phenomenon for yourself.”
6V6GTs
Tone Template: Juicy, Smaller American
Price: $22 to $55 per tube
Courtesy of Telefunken
Originally an American-made tube (though later produced elsewhere), the 6V6 is often thought of as the little brother of the 6L6. But, despite its use in the smaller- to medium-sized amps made by golden-age American companies of the ’50s and ’60s—who used 6L6s in their larger amps, it really has a sonic signature all its own. A pair will generate around 15 to 18 watts in a cathode-biased amp (think tweed Deluxe) or upwards of 22 watts in a fixed-bias circuit (Deluxe Reverb), and they were also sometimes used in quads to produce 30 to 50 watts. Their sonic personality? Round, rich cleans and a juicy, relatively mid-forward sound when pushed into distortion, with notable compression and a hint of granularity at the core.
In addition to the notable Fender models the 6V6 appeared in, these tubes were also deployed in the most popular Gibson amps of the ’50s and have been used in near-countless reissue and boutique models over the past couple of decades. The Tone King Imperial, Bogner Goldfinger 45, Carr Mercury V and Skylark, Divided By 13 CJ 11, and Victoria Silver Sonic all used 6V6s in their output stages.
EL84
Tone Template: British Chime
Price: $17 to $38 per tube
Courtesy of Electro-Harmonix
In something of a parallel to the American 6V6, the EL84 (originally a British and European tube) is often talked of as a “junior EL34,” although, again, it has a personality very much its own. This tube is notable for being the only 9-pin (noval) tube in our selection (most tubes are octal, having 8 pins), and it can look much like a taller preamp tube. The EL84 delivers around 15 to 18 watts in pairs, or from 30 to 36 watts in quads.
Far and away most famous for its use in the Vox AC15 and AC30, the EL84 is known for its sweet, bright, chimey clean tones and succulent, textured, harmonically saturated overdrive. “Shimmer” and “bloom” are among the adjectives players use to describe EL84s in the sweet spot, just at the edge of breakup. In addition to the archetypal original Vox amps and later reissues, the EL84 has been popular with a long list of other companies, including boutique builders who clearly take their inspiration from the British classics.
Popular amps like the Matchless Lightning, Spitfire and DC-30; Dr. Z Carmen Ghia and Maz (the latter has two equivalent 6N14Ns power tubes); 65amps London and Soho; TopHat Club Royale; Friedman JJ Junior; Mesa/Boogie Mark Five: 25 and 35; and Fender Blues Junior and Pro Junior all use this tube.
Preamp Tubes
Generally speaking, preamp tubes are less likely to define the foundational sound of any given amplifier, although swapping one for another—even of the same type, but a variation or a tube from a different maker—can still impose a noticeable change on your tone. One reason we think of preamp tubes as less of a defining element in most guitar amps is because the vast majority of amps use the same preamp tube types. The 12AX7 is far and away the most common preamp tube and has been since the early ’50s. Again, variations on makes of 12AX7s can still stamp elements of their own personality on the sound of any amp, and swapping one manufacturer’s 12AX7 for another might produce dramatic sonic changes, but not the same sort of tectonic shift in the basic characteristics of any given amp as output tubes.
If you’re curious about the sonic effects of variations in 12AX7s that can be used in your amp, it’s worth trying a few to check out the phenomenon for yourself, in order to select a favorite. Otherwise, it’s probably more informative to discuss their different levels of gain available via various preamp tubes. That will alter the sound and feel of most amps, since the proportions of clean and overdriven sound, the point on the volume control at which distortion sets in, and other gain-related factors all play a big part in shaping what we think of as our tone.
Each major type of preamp tube exhibits what we call a “gain factor,” and the relative comparison of this spec gives us some indication of how hard that tube will drive the preamp stage of any amp. To that end, despite the 12AX7’s domination of the market, let’s also look at a few other tubes, too. (Note: We’re only discussing common 9-pin (noval) preamp tubes here, but the lesser-used, octal-based preamp tubes, more common up until the early to mid-’50s, are still enjoyed by some players.)
Dual-Triode Preamp Tubes
12AX7s (aka ECC83s), 5751s, 12AT7s, 12AY7s
Price: $18 to $35
Each of these tube types contains two triode gain stages within one bottle—hence, the “dual-triode” name—and they can perform their duties in two parts of the preamp circuit simultaneously using each triode. [Each triode gain stage consists of three electrodes: a cathode filament, anode plate, and control grid. For more background, check out Dan Formosa’s article “Tube-Amp Basics for Beginners,” in the June 2021 issue, or at premierguitar.com.] In theory, any one of these tubes—listed above in descending gain levels—can be substituted for each other with little chance of damage to your amplifier. Technically, the 12AT7 is usually biased differently than the others, so might not perform optimally in a circuit set up for a 12AX7, but you’re unlikely to damage your amp by trying it out. (If you’re curious, swap it in for a short period of time, and if you like the results, check with your amp’s manufacturer or a good tech before using it full-time.)
By the way, here are the specific gain factor ratings—the measures for how much a tube amplifies the input signal—for these tubes:
12AX7: 100
Courtesy of the Tube Doctor
5751: 70
Courtesy of Electro-Harmonix
12AT7: 60
Courtesy of Electro-Harmonix
12AY7: 40
Courtesy of The Tube Doctor
The main effect of swapping between these tubes of descending gain factors will be increased headroom and a later onset of distortion as you run down through the ranks. Each comes with its own nuanced sonic characteristics, too, which are difficult to define when divorced from the specific circuit in which they are used. Note, however, that many players find the 12AT7 (most commonly seen in reverb and phase-inverter positions) to be a little dull or cold-sounding, even as compared to the lower-gain 12AY7.
The 12AY7 is notable for its use in the first gain stage of most tweed Fender amps of around 1952 to ’60. Over the years, many players have swapped these for more common 12AX7s, which delivers earlier breakup and is desirable for some playing styles. This hotter tube can lead to a somewhat “fizzier” distortion when pushed hard in this type of circuit, though, and the 12AY7 is still considered to deliver the proper tone of classics like the 5E3 Deluxe, 5F4 Super, and 5F6-A Bassman.
Pentode Preamp Tubes
EF86, 5879
Price: $35 to $200
Courtesy of The Tube Doctor
Seen far less often but still beloved by some players, the pentode preamp tube houses a single pentode gain stage within a glass envelope that’s otherwise identical to the 12AX7 and the others above. As you might guess, pentode tubes have five electrodes, with screen and suppressor grids added to the 12AX7 family’s three. These are not, however, interchangeable for dual-triode tubes, so don’t even try it!
The most common pentode preamp tube is the EF86 (aka 6267), found in the classic iteration of the early ’60s Vox AC15. This tube reputedly has an even higher gain factor than the 12AX7—although the exact number is debated—and is characterized by a fat, rich sound. It’s prone to less self-distortion than the dual-triodes, too, meaning it passes a full-frequency signal along to the next stage in the amp without adding much of its own fizz or sizzle, although it can certainly contribute to tube overdrive. It also resists collapsing into mush when hit by an overdrive pedal in front of the amp. Boutique amps that employ the EF86 include the Matchless DC-30 (in channel 2, for high gain), the Dr. Z Z-28, and the Matchless DC-30.
Another pentode tube is the American-made 5879, which has similar characteristics to the EF86, although it also has different internal pin connections and therefore cannot be used in place of it. Probably best known for its use in the Gibson GA-40 Les Paul amp of the late ’50s, this one has most notably been employed in several current models from Divided By 13.
The Skinny
Okay, now you know all the basics about tubes. Use it as you will—to experiment, to hold your own in debates with fellow gear nerds, or as another stepping stone on your path to becoming a tone sensei.
Follow Your NOS
Courtesy of the Tube Store
Courtesy of the Tube Store
Courtesy of the Tube Store
As you get deeper into the world of replacement tubes for guitar amplifiers, and particularly if you fuel your knowledge by perusing online forums, you’re likely to come across the term “NOS” again and again, along with the recommendation that those are the tubes you need to buy. Short for “new old stock,” NOS tubes are those that were manufactured many years ago—usually during the golden age of American and European tube production—but have never been used. They are old stock, but are essentially new because they have never been installed in an amplifier.
The demise of the vacuum tube industry in the U.S. and Europe began in the late 1960s and early ’70s, when transistors took the reins for just about all amplification duties other than those of guitar amps. Production dwindled through the ’70s and all but disappeared after, although a few tubes were made in the U.S. (the 6550, in particular) in relatively small numbers right up until 1993. More to our point, though, since the early ’80s all new tubes have been manufactured in Eastern Europe and China, particularly because these regions still needed them for use in military equipment that was slower to update to new tech. It’s worth remembering that once the technology in military and consumer electronics moved forward, the guitar-amp and audiophile markets weren’t enough to sustain the tube industry.
Guitarists have been plundering whatever stocks of NOS tubes they could find for a good three decades or more. So, there aren’t a whole lot of genuine NOS tubes left, and those that remain are very expensive. Beyond this, the bigger issue with acquiring NOS tubes today revolves around quality and verification: a lot of sub-par tubes that were rejected during testing over the years have ended up being recycled as NOS, as have a lot of used tubes pulled from old amps and polished up. Buying NOS from a reputable dealer can help mitigate these issues, but, once again, you will pay a premium. For example, we recently spotted an Amperex Bugle Boy 12AX7 for sale at $349.95. Is it that much better than a JJ Electronic 12AX7 for 20 bucks?
No matter how much chat-room pundits rave that you must use NOS tubes, current (or at least recent) tubes provide good tone and excellent reliability in the vast majority of guitar amps in use today. It’s also worth considering the fact that contemporary amp makers are usually designing and fine-tuning their circuits with current-manufacture tubes in mind, so while a rare and expensive NOS substitute might get a little more out of them, that is by no means guaranteed.
A rig meant to inspire! That’s Jerry Garcia with his Doug Irwin-built Tiger guitar, in front of his Twin Reverb + McIntosh + JBL amp rig.
Three decades after the final Grateful Dead performance, Jerry Garcia’s sound continues to cast a long shadow. Guitarists Jeff Mattson of Dark Star Orchestra, Tom Hamilton of JRAD, and Bella Rayne explain how they interpret Garcia’s legacy musically and with their gear.
“I met Jerry Garcia once, in 1992, at the bar at the Ritz Carlton in New York,” Dark Star Orchestra guitarist Jeff Mattson tells me over the phone. Nearly sixty-seven years old, Mattson is one of the longest-running members of the Grateful Dead tribute band scene, which encompasses hundreds of groups worldwide. The guitarist is old enough to have lived through most of the arc ofthe actual Grateful Dead’s career. As a young teen, he first absorbed their music by borrowing their seminal records, American Beauty and Workingman’s Dead, brand new then, from his local library to spin on his turntable. Around that same moment, he started studying jazz guitar. Between 1973 and 1995, Mattson saw the Dead play live hundreds of times, formed the landmark jam bandZen Tricksters, and later stepped into theJerry Garcia lead guitarist role with the Dark Star Orchestra (DSO), one of the leading Dead tribute acts.
“At the bar, I didn’t even tellGarcia I was a guitar player,” Mattson explains. “I had just heard him play the new song ‘Days Between’ and I told him how excited I was by it, and he told me he was excited too. It wasn’t that long of a conversation, but I got to shake his hand and tell him how much his music meant to me. It’s a very sweet memory.”
The Grateful Dead’s final studio album was 1989’sBuilt to Last, and that title was prophetic. From 1965 to 1995, the band combined psychedelic rock with folk, blues, country, jazz, and even touches of prog rock and funk, placing a premium on improvisation and pushing into their own unique musical spaces. Along the way, they earned a reputation that placed them among the greatest American bands in rock ’n’ roll history—to many, the ultimate. Although no one member was more important than another, the heart and soul of the ensemble was Garcia. After his death in 1995, the surviving members retired the name the Grateful Dead.
“I think Jerry Garcia was the most creative guitarist of the 20th century because he had the widest ears and the sharpest instincts,” opines historian, author, and official Grateful Dead biographer Dennis McNally, over the phone. “What we see after his death are the Deadheads coming to terms with his passing but indicating that it’s the music that was most important to them. And who plays the music now becomes simply a matter of taste.”
Dark Star Orchestra guitarist Jeff Mattson, seen here with Garcia’s Alligator Stratocaster (yes, the real one).
Photo by Susana Millman
This year marks 30 years since Garcia’s passing and 60 years since the band formed in the San Francisco Bay Area. Today, the guitarist’s musical vocabulary and unique, personal tone manifests in new generations of players. Perhaps the most visible of these musicians is John Mayer, anointed as Garcia’s “replacement” in Dead and Co. But dozens of others, like Mattson, Tom Hamilton Jr., and a young new artist named Bella Rayne, strive to keep the Dead alive.
The first few Grateful Dead tribute bands began emerging in local dive bars by the late ’70s. More than mere cover bands, these groups devoted themselves entirely to playing the Dead. A few of these early groups eventually toured the country, playing in college towns, ski resorts, and small theatres across the United States. Mattson started one on Long Island, New York. He tells me, “The first band I was in that played exclusively Grateful Dead was Wild Oats. It was 1977, and we played local bars. Then, in 1979, I joined a band called the Volunteers. We also played almost exclusively the Grateful Dead, and that was a much more professional outfit—we had a good PA and lights and a truck, the whole nine yards.” The Volunteers eventually morphed into the Zen Tricksters.
Garcia’s death turbocharged the Dead tribute band landscape. Fanbases grew, and some bands reached the point where big-time agents booked them into blue-chip venues like Red Rocks and the Beacon Theatre. Summer festivals devoted to these bands evolved.
“The first band I was in that played exclusively Grateful Dead was Wild Oats. It was 1977, and we played local bars.” —Jeff Mattson
Dark Star Orchestra launched in 1997, and they do something particular, taking an individual show from somewhere out of Grateful Dead history and recreating that evening’s setlist. It’s musically and sonically challenging. They try to use era-specific gear, so on any given night, they may be playing through recreations of the Grateful Dead’s backline from 1971 or 1981, for example. It all depends on the show they choose to present. Mattson joined DSO as its lead guitar player in 2009.
Something else significant happened after Jerry died: The remaining living members of the Grateful Dead and other musicians from Garcia’s inner circle embraced the tribute scene, inviting musicians steeped in their music to step up and sit in with them. For Mattson, it’s meant playing over the years with all the core members of the band, Phil Lesh, Bob Weir, Bill Kreutzmann, and Mickey Hart, plus former members Donna Jean Godchaux, who sang in the band from 1971 to 1979, and Tom Constanten, who played keyboards with the Dead from 1968 to 1970.
Tom Hamilton’s Lotto custom built had a Doug Irwin-inspired upper horn.
In the newest post-Garcia tribute bands, many guitar players aren’t old enough to have seen Garcia perform live—or if they did, it was towards the end of his life and career. One of those guys sitting today at the top of the Garcia pyramid, along with Mattson, is Tom Hamilton Jr. Growing up in a musical family in Philadelphia, Hamilton saw Garcia play live only three times. Early on, he was influenced by Stevie Ray Vaughan, but Hamilton’s older brother, who was also a guitar player, loved the Dead and Garcia. “My brother wanted to play like Jerry,” he recalls, “so he roped me in because he needed me to play ‘Bob Weir’ and be his rhythm guitar sidekick.” Eventually, Hamilton leaned more into the Jerry role himself. “Then I spent my entire twenties trying to develop my own voice as a songwriter and as a guitar player. And I did,” Hamilton says. “And during that time, I met Joe Russo. He was not so much into the Dead then, but he knew I was.”
A drummer from Brooklyn, by about 2006, Russo found himself collaborating on projects with members of Phish and Ween. That put him on the radar of Lesh and Weir, who invited Russo to be a part of their post-Dead project Furthur in 2009. (And on guitar, they chose DSO founding member John Kadlecik, opening that role up for Mattson.)
“When Joe played in Furthur, he got under the hood of the Grateful Dead’s music and started to understand how special it was,” Hamilton points out. “After Furthur wound down, we decided to form JRAD. We weren’t trying to do something academic, not some note-for-note recreation. We were coming at it through the pure joy of the songs, and the fact that the five of us in JRAD were improvisers ourselves.”
“We were coming at it through the pure joy of the songs, and the fact that the five of us in JRAD were improvisers ourselves.” —Tom Hamilton Jr.
Today, Joe Russo’s Almost Dead (JRAD) is considered to be one of the premier Grateful Dead tribute bands. They formed in 2013, with Hamilton and Scott Metzger as the band’s guitar frontline, with Hamilton handling Garcia’s vocal roles. Eventually, Hamilton, too, found himself jamming onstage with the ever-evolving Phil Lesh and Friends. That, of course, further enmeshed him in the scene, and in 2015, he started a band with Dead drummer Bill Kreutzmann calledBilly and the Kids.
Now, there’s a new kid on the block, literally. Bella Rayne recently turned 18 and grew up in Mendocino, California. Her parents were into the Dead, but even they were too young to have really followed the original band around the country. At her age, they were big into Phish. By the pandemic, Bella started embracing the guitar out of boredom, woodshedding while social distancing in quarantine. She explains, “Like any other teen, I was bored out of my mind looking for anything to do.” Rummaging through her garage, she came across her mom’s old Strat. “At the time, I was really into ’90s Seattle grunge. I put new strings on the Strat, and then I tried to teach myself Pearl Jam songs, and I learned how to play them by watching YouTube videos. Then, I started posting videos of my journey online as I became more serious about it. I hit a point where I knew it would be my thing. The next thing I knew, one of the Bay Area Dead bands [China Dolls] reached out to me and asked me to sit in. I thought, ‘no way.’“My parents are huge Deadheads,” she continues. “That’s theirthing. I grew up with the Dead being pushed on me my whole life. But I ended up going, and it’s just been this awesome spiral ever since.” Bella calls her current Dead-related project Bella Rayne and Friends, and she, too, has been recognized not only by the new generation of Garcia players in the Dead tribute bands, but also by Melvin Seals, the Hammond organist who played for years in theJerry Garcia Band. “I was hired to just sit-in for a couple of numbers withMelvin and his JGB band,” she recalls, “and we were having so much fun he said to me, ‘Why don’t you just sit in for the whole second set.’ It was an amazing night.”Bella Rayne with her Alligator-inspired Strat, with a JGB Cats Under the Starssticker on the body.
Photo by Sean Reiter
Jerry Garcia played many different guitars. But for those guitarists wanting to emulate Garcia’s tone, the focus is on four instruments in particular. One is a1955 Fender Stratocaster known as “Alligator,” which Garcia had heavily modified and began playing in 1971. The other three guitars were hand built in Northern California by luthier Doug Irwin: Wolf, Tiger, and Rosebud. Garcia introduced them in 1973, 1979, and 1989, respectively. Sometimes, in a jam-band version of being knighted by the Excalibur sword, a chosen member of this next generation of Dead players is handed one of Garcia’s personal guitars to play onstage for a few songs or even an entire set.
Although they started their journeys at different times and in separate ways, Mattson, Hamilton, and Rayne all have “knighthood” in common. Rayne remembers, “In March of 2024, I was sitting in one night with anall-girl Dead tribute band called the China Dolls, and no one had told me that Jerry’s actual 1955 Strat, Alligator, was there that evening. My friend [roots musician] Alex Jordan handed me the guitar unannounced. It’s something I’ll never forget.”What’s it like to strap on one of Jerry Garcia’s iconic instruments? Tom Hamilton recalls, “It wasRed Rocks in 2017, and I played with Bob Weir, Melvin Seals, and JGB at a tribute show for Jerry’s 75th birthday. I got to play both Wolf and Tiger that night. I was in my head with it for about one song, but then you sort of have a job to do. But I do recall that we were playing the song ‘Deal.’ I have a [DigiTech] Whammy pedal that has a two-octave pitch raise on it, real high gain that gives me a lot of sustain, and it’s a trick I use that really peaks a jam. That night, while I am doing it, I had the thought of, ‘Wow, I can’t believe I am doing this trick of mine on Garcia’s guitar.’ Jerry would have thought what I was doing was the greatest thing in the world or the absolute worst, but either way, I’m cool with it!”
“I was sitting in one night with an all-girl Dead tribute band called the China Dolls, and no one had told me that Jerry’s actual 1955 Strat, Alligator, was there that evening. My friend [roots musician] Alex Jordan handed me the guitar unannounced. It’s something I’ll never forget.” —Bella Rayne
Jeff Mattson has played Alligator, Wolf, Garcia’s Travis Bean 500, and his Martin D-28. He sums it up this way: “I used to have posters up in my childhood bedroom of Garcia playing his Alligator guitar. I would stare at those images all the time. And sowhen I got a chance to play it and plug it in, suddenly there were those distinctive tones. Those guitars of his all have a certain mojo. It’s so great to play those guitars that you have to stop in the moment and remind yourself to take a mental picture, so it doesn’t just fly by. It’s just a tremendous pleasure and an honor. I never imagined I would get to play four of Jerry Garcia’s guitars.”
With young people like Bella Rayne dedicating herself at the tender age of 18 to keeping the Dead’s music going, it feels like what the band called their “long strange trip” will keep rolling down the tracks and far over the horizon. “People will be listening to the Grateful Dead in one hundred years the same way they will be listening to John Coltrane, too,” predicts McNally. “Improvisational music is like jumping off a cliff. Sometimes you fly, and sometimes you land on the rocks. When you take that risk, there’s an opportunity for magic to happen. And that will always appeal to a certain segment of people who don’t want predictability in the music they listen to. The Grateful Dead is for people who want complete craziness in their music—sometimes leading to disaster and oftentimes leading to something wonderful. It’s music for people who want to be surprised.”
Lloyd Baggs made his first acoustic guitar when he was a fine-art lithographer and soon found himself building instruments for Ry Cooder, Jackson Brown, Janis Ian, and other stars. Today he is an innovator in acoustic guitar pickup design.
The master guitar builder and pickup maker explains how our favorite unplugged 6-strings do their thing, for the strumming layperson and aspiring luthier alike.
It’s utterly amazing that a satisfying acoustic guitar can be assembled from a few pieces of wood. That’s magic. And the mystery, magic, and quest to create the perfect guitar tone is what I think drives most luthiers.
If you have made your first few guitars but somehow they didn’t sound like pre-war D-28s, you may have a few questions about why and how to get closer. If you’re brave enough to continue and are committed to bridging the gap from just being able to assemble a guitar to knowing how to build great-sounding instruments predictably and consistently, you’ve just entered The Twilight Zone.
When I started building acoustics in the 1970s, there was no literature on how they work—let alone how to manipulate tone. Luckily, there was a wealth of information on this in violin-making literature. There were discussions about how mass and stiffness interact, top and back tuning, air resonances, standing waves, etc. Pioneers discovered that a top does not move in and out at once like a perfect speaker, but, as the frequencies get higher, it keeps dividing into smaller and smaller vibrating parts, like a bunch of mini speakers. Each of these mini speakers has a place where it’ll be the loudest, called a resonant frequency. (More recently, laser interferometry has been used to reveal or “freeze” body vibration patterns to see how the various resonances in the body behave and at what frequencies.)
Thinking that some science would be a shortcut to becoming a better builder, I crudely adapted some of the violin makers’ tests. My “laser” was a cheap guitar speaker, power amp, and frequency sweeper. Sprinkling some salt or pepper on the top or back of a guitar and playing a loud frequency sweep into the nearby speaker would excite the wood, and the salt would dance around until, at some frequency, it would congeal into a shape to reveal the vibrating patterns of its resonant frequency. It was like having X-ray glasses—to observe the resonances and see the effects of shaving braces, adding or subtracting some mass, thinning the top here or there. Once one could see under the hood, a luthier could then deliberately alter some part, move a brace, or make some other change to alter or move some resonance.
This 1937 Martin D-18 is an example of steel-string perfection for many acoustic guitar aficionados.
“From the loudspeaker standpoint, the guitar is a lousy speaker because not only does the top move, but the back, sides, and neck are moving with every note, too.”
The Glittering Present
Fortunately for aspiring luthiers today, we are living in a golden age. There is a wealth of information available about every aspect of building and more tools to study vibration in apps for our phones than what was available collectively back in the day. There are also a number of individuals who have more deeply studied the physics of the acoustic guitar and have made immense strides to quantify material characteristics and predict acoustic behavior. Bryan Galloup, Giuliano Nicoletti, Andy Powers, Richard Hoover, and Tom Bedell come to mind as builders who have embraced science to enhance predictable outcomes. Giuliano has published an excellent book called Mastering the Sound of the Acoustic Guitar. There are also a number of excellent lutherie schools that use and teach students the scientific methods.
So, on a deeper and eye-watering level, how does the acoustic guitar actually work? If you think of an acoustic guitar like a loudspeaker, the sides and the back are the box, and the top is the speaker. The strings, connected to the top via a saddle and a bridge, are the energy source. The best loudspeaker manufacturers go to extreme lengths to be sure the box is rigid, with minimal vibration, and that only the speaker cone moves. The guitar is a lousy speaker because not only does the top move, but the back, sides, and neck are moving with every note, too. Every piece has multiple resonances that interact with each other. The way these resonances interact is a big factor in how the guitar sounds.
Unlike a typical 3-way speaker, where each individual speaker acts as a perfect piston to cover a range of sound, a guitar top converts energy into sound at all frequencies and only behaves as a pure piston or “good speaker” in the lower frequencies. Above those low frequencies where the top moves in and out as one, called the primary resonance or piston mode, the vibration of the top is chaos orchestrated largely by the position, stiffness, size, and weight of the bracing plus the mass, stiffness, and curvature of the top. About an octave above the primary resonance, roughly half the top will actually be going up while half of the top will be going down simultaneously. Then, moving up still further in frequency, one third of the top may be going up and down while the other two thirds are moving down and up. As the frequencies get higher, smaller and smaller pieces of the top move simultaneously and sometimes in opposition to each other.
It would be helpful to think of the guitar top as a string where only the fundamental moves the entire string as one piece. After that, the string divides into higher and higher frequencies. In a guitar, the top divides into smaller and smaller “mini speakers” as the frequencies get higher. The big difference between a guitar top and a string vibration is that strings divide evenly into resonant modes or harmonics in halves, quarters, eighths, and so on, while the places where the guitar top divides into individual resonances are seemingly random. The places where these resonances occur are often where the string energy will be translated into the loudest acoustic output. Most of the resonances are active at the same time, influencing and interacting with each other and determining what of the strings’ energy pool will be heard. The most important concept to understand is that the available string energy is lost or absorbed by the structure in ways largely determined by the resonances. The way string energy is lost into the structure of the guitar and converted or traded for acoustic energy is largely responsible for why a particular guitar sounds like it does.
“Add to this the wide variations in strength, mass, and tonal characteristics of various woods and how the neck is attached (yes, even the neck has its own resonances), and the acoustic guitar is a crazy complex soup of interacting parts.”
Baggs built this eye-catching acoustic for Ry Cooder, a demanding expert on tone, in 1977. He built another for the artist two years later.`
With his book, Mastering the Sound of the Acoustic Guitar, Giuliano Nicoletti has created a manual for organic lutherie that applies scientific principles to building steel- and nylon-string acoustic guitars.
Aim Low?
For a great-sounding guitar, the first trick is to make the top flexible enough so that its primary resonance is low enough to absorb enough string energy at low frequencies for a rich, warm response, while not exploding under string pressure. And, while you’re at it, to deliberately tune the remaining resonances so they work together in some sort of harmony. If you think of the guitar’s resonances as notes in a chord, a major third will sound warmer and more pleasing than a minor seventh with an augmented ninth. The top bracing in conjunction with the top radius, thickness, mass, and stiffness will determine the frequencies and character of the multiple resonant modes. If you’ve ever heard of a luthier “tuning the top” or “tap tuning,” this is what’s going on here.
Add to this the wide variations in strength, mass, and tonal characteristics of various woods and how the neck is attached (yes, even the neck has its own resonances), and the acoustic guitar is a crazy complex soup of interacting parts. But then, with a little shave here, a slight readjustment of bracing position there, a change in the bridge height, reduction or addition of some mass, some adjustment of top thickness here or there, altering the doming radius of the top or back, and hundreds of other variables, the modes can be adjusted in frequencies so the major resonances will work together in greater harmony and the tone of the guitar will be pleasing. Sounds easy enough, right?
It’s common knowledge that a larger guitar will usually have better low frequencies, but what the heck is the air inside the box and soundhole doing? If you blow sideways across the soundhole, you’ll hear what’s called the pop-bottle or air resonance of the guitar. Air is springy, and as the top vibrates up and down, “plugs” of air are forced in and out of that hole at the air resonance frequency, which then reinforces the lower frequencies. The size of the hole can also influence where this resonance occurs. In practice, the air resonance of a typical guitar is about an octave lower than its top resonance.
L.R. Baggs’ popular Element pickup system is centered on an undersaddle transducer designed to follow the movement of a guitar’s top.
And just what does the back do? Besides enclosing the box and playing along with the top, a major structural purpose of the back is to hold the neck from collapsing into the top. Because of this function, backs tend to be stiffer than tops and resonate at higher frequencies. Of course, the back also has multiple resonances that interact with those of the top. How exactly is still a mystery to me, but for sure the back plays a big role in the sound of the guitar.
One question I hear a lot is, “How does the saddle affect tone?” In the whole scheme of things, not too much, really, but it is important. All materials act as a filter to pass certain frequencies and block others, so the material choice of the saddle will color a guitar’s tone. Bone has generally garnered the most affection as a saddle material as it seems to transmit harmonics well while not being screechy, providing a nice, full-balanced tone. Many have, with moderate success, attempted to duplicate its qualities in synthetic material.
How does all of this influence pickup design? Amplification is just that, and one hopes that what comes out of the speaker faithfully resembles the guitar, but only louder. Going back to the X-ray glasses, an intimate knowledge of how the guitar works has certainly been very helpful to recognize and capitalize on the unobvious modal stuff in the vibration of the instrument to create more faithful pickup systems.
Finally, I get a lot of questions about pickup choice. The best pickup largely depends on what sort of music you play, where you play, and how loud it is. For instance, a studio miked sound would not be appropriate for a loud heavy metal band as the guitar would be lost. What works on a loud electric-guitar-oriented stage would be an unfortunate choice for a singer-songwriter or a bluegrass musician. And while there are lots of great choices nowadays, there is still no such thing as a perfect pickup. Ultimately, you are always going to sound like you.
Taylor Guitars, one of the world’s leading acoustic guitar brands, has teamed up with Sony Pictures Consumer Products and HBO®to unveil a replica of the acoustic guitar featured in the award-winning HBO Original series The Last of Us, which is now streaming its second season on Max. This collaboration brings fans and musicians alike an exact replica of the guitar Joel gives Ellie in the critically acclaimed show.
Taylor’s The Last of Us Replica 314c guitar is based on its best-selling 300 Series and features Taylor’s most popular body style, the Grand Auditorium. Crafted with Taylor’s hallmark playability, pro-level sound and refined workmanship, the guitar showcases a visual aesthetic that matches the guitar featured in the series.
For fans of the show, the guitar’s most recognizable design element is a custom moth inlay at the third fret. The guitar also features a Tobacco Sunburst top finish and grained ivoroid accents, along with a satin-finish body and neck, creating a vintage, well-worn aesthetic that fits seamlessly into the gritty post-pandemic world Joel and Ellie inhabit.
This acoustic-only model features a solid Sitka spruce top and solid sapele back and sides, delivering a clear, warm, balanced voice with appealing midrange presence — an ideal sonic tool for storytelling through song. Additional appointments include grained ivoroid body binding, grained ivoroid fretboard inlays that include the moth and large dot position markers, and a custom double-ring rosette also in grained ivoroid. The Grand Auditorium body features a Venetian cutaway for easy access to upper-register notes. Each guitar comes with a Taylor-built deluxe hardshell case to ensure safe transport, whether across the country or across the quarantine zone.
Built for the Journey Ahead
“The Last of Us is a story of resilience, connection and finding beauty amid harsh realities — themes that resonate with the emotional expression a Taylor guitar offers players,” says Tim O’Brien, Vice President of Marketing at Taylor Guitars. “We’re honored to collaborate with HBO and Sony Pictures Consumer Products to bring this iconic instrument to fans and players alike.”
Availability and Ordering
The Taylor x The Last of Us Replica guitar is available for purchase now via TaylorGuitars.comand select authorized Taylor dealers. Orders are built on demand in Taylor’s Southern California factory, with an expected delivery time of 6–10 weeks. Due to the nature of this release, quantities are limited.
Whether you’re a musician, collector or a devoted fan of the series, this guitar offers a one-of-a kind connection to the legacy of Joel, Ellie and the enduring spirit of survival.
At its core is GTRS’ upgraded G151 intelligent system, offering 128 onboard effects, MNRS amp and cab sims, and even 17 guitar emulations—exclusive to this model. Everything is controlled via the eye-catching Super Knob, which changes color to match your preset, as well as through the Bluetooth-connectible GTRS app.
GTRS’ W902 features select tonewoods and construction: an alder body, poplar burl top, and a sleek bolt-on 5-piece neck made from roasted flame maple and rosewood, with satin natural finish and a rosewood fingerboard. The fanned fret design features 24 white copper frets and a stainless zero fret. A pair of GTRS Alnico V pickups and an HL-II bridge deliver a resonant tone, made particularly versatile thanks to the 5-way tone switch and tone knob.
The W902 offers a truly innovative choice for tech-savvy guitarists. Its features include a wireless transmitter, OTG recording, an 80-second looper, metronomes, and a drum machine, the app-supported guitar boasts up to 12 hours of playtime on a single charge (9 hours with the wireless transmitter in use).
The W902 is an upgraded version of the original W900 Intelligent Guitar, and the W902 most notably features an upgraded GTRS Intelligent Processor System, the G151, which even offers upgrades over the GTRS SL810's recently announced G150 system. The G151 system comes with a staggering 128 effects pre-installed, along with 10 of both MOOER's in-house MNRS amp and cabinet simulation profiles. Exclusive to the W902, the G151 system even includes 17 guitar simulation effects, allowing guitarists to emulate the tonal resonance of some of their favorite guitars.
To activate and browse through presets within the G151 system, which can be connected via Bluetooth 5.0, guitarists can use the guitar's Super Knob, which lights up in different LED colors depending on which preset is activated. Of course, users are able to get stuck into and edit the effects chains of presets through the GTRS app, enabling them to craft their own favorites through their mobile device. The guitar still functions without the G151 system; the Super Knob just needs to be turned off, and the W902 is usable as a regular electric guitar.
Within the GTRS app, there is even an 80-second looper, 10 metronomes, and 40 drum machine grooves built in, providing users with an all-in-one suite for guitar practice and composition. This is especially the case when combined with the W902's OTG-recording support, enabling on-the-go recording without the need for a hardware recording setup.
The W902 comes bundled with a GTRS Deluxe gig bag, three guitar wrenches, a USB 3.0 cable for charging, and a user manual. The guitar even contains a wireless transmitter and an integrated 4000mAh Li-ion battery, providing up to 12 hours of continuous use (9 hours with the transmitter in use), allowing users to enjoy the G151 system through headphones or an amplifier.
Guitarists who want to experiment further with the W902’s technology can connect the intelligent system to the GTRS GWF4 wireless footswitch, which is ideal for switching between presets in live scenarios when control through a mobile device isn't practical.
GTRS W902 Guitar construction features:
- Alder Body, 5-Piece Selected Roasted Flame Maple and Rosewood Neck with Satin Natural Finish (C-Shape)
- Bolt-on neck, 25-1/2" scale length, with dual action steel truss rod
- Rosewood fingerboard, 12” radius, 24 white copper (0 fret stainless) fanned frets
- Built-in wireless transmitter
- Super Knob, Volume Control Knob, and Tone Knob, 3-way tone-selection switch
- GLB-P1 Li-ion Battery (4000mAh, up to 12 hours of continuous use, 9 hours with the wireless transmitter in use)
- USB port for charging and OTG recording
- GTRS Deluxe gig bag, 3 guitar wrenches
GTRS G151 Intelligent Guitar System features:
- GTRS G151 Intelligent Processing System (and GTRS App)
- 128 effects, 10 MNRS amp (GNR) and cabinet (GIR) simulation models
- 17 guitar simulations
- 80-second looper, 40 drum machine grooves, 10 metronomes
- Bluetooth 5.0 connectivity
- GTRS GWF4 wireless footswitch support (sold separately)
The GTRS W902 is now available worldwide. For more information visit www.gtrs.tech.