They’re typically simple affairs, but oh what a difference treble boosters can make.
Greetings, tone junkies! This month, I'd like to shine a spotlight on an effect that I feel is almost criminally overlooked and underrated, an effect that has been an integral part of many a legendary guitarist's tone formula. Yes, the classic treble booster! Some of the most iconic early rock, hard rock, and metal tones were created using one of these babies.
If you're not super familiar with treble boosters, they don't add distortion or clipping of their own, but instead drive guitar amps into overdrive naturally. Treble boosters originated due to necessity, because many early British guitar amps were voiced relatively dark. (Think Vox AC30 pre “top boost" models.) Anything but the brightest-sounding guitars—even Fender Stratocasters—could easily get lost in the mix.
So, a few creative designers set about making boxes that would boost the guitar signal in the mid and treble frequencies. These devices would certainly alter the tone by clarifying the guitar signal, but because they boosted the signal, too, they also caused the amplifiers to overdrive. And the results were legendary. The following are just a few of the impactful players who used the treble booster/dark amp combo to great “effect."
• Ritchie Blackmore. He's known for often using high-power Marshall amps, but so many of Blackmore's iconic recorded tones (Machine Head, anyone?) are allegedly a Hornby Skewes treble booster feeding into a Vox AC30. Blackmore has gone on record stating that he loved the tones he achieved with his Vox setup, and that he was always trying to get his Marshalls to sound similar.
• Brian May. Since the beginning, May's rig has featured a treble booster feeding into a Vox AC30's normal channel. Cranking the normal channel on an AC30, like May, typically creates an unusable, muddy tone. But when hit with the treble booster, it's time to “Tie Your Mother Down!" By using the volume control on his Red Special guitar, May could go from shimmering, edgy not-quite cleans all the way to full-on raunch and blistering overdrive. May started out using a Dallas Rangemaster and went on to use Rangemaster-style boosts built by Pete Cornish, Greg Fryer, and others.
• Tony Iommi. Black Sabbath's guitarist is another legendary player who put the Rangemaster treble booster to good use. Iommi boosted his early Laney amps into a searing, thick distortion, and the results laid the foundations for what would become known as heavy metal.
• K.K. Downing & Glenn Tipton. Both Judas Priest 6-stringers utilized a Rangemaster into the normal channel of four-input Marshall 1959 heads, and created some of the most iconic metal riffs of all time. Once again, a perfect balance was achieved by running a treble-boosted hot guitar tone into the often rather muddy, veiled tone of the normal channel on these amps.
What's in a Name? If you think about it, “treble booster" is almost a misnomer. While these devices do focus the tone in the treble frequencies, they also boost the upper midrange and make a guitar cut through the mix in just the right range. Treble boosters are also sensitive to a guitar's control settings: Rolling back the guitar volume will clean things up quickly and reveal glassy highs that really sparkle.
What I love most about these “primitive" boosts is that seemingly every well-known guitarist who used one forged a unique sonic and musical path. When Brian May played, you knew it was him. The same goes for Iommi and Blackmore. Even though the effect was similar at the core, these guitarists certainly didn't sound the same.
Playing a loud amp with a treble booster is not the same as playing a modern amp with a ton of preamp gain, or even a clean amp with an overdrive or distortion box. There's just something so unique and expressive about sending your tone over the top with a treble boost. It could just be the missing link in your tone quest! If you're a fan of overdriven tube-amp tone and if I've inspired you to explore what a treble booster can do for your rig, the following represent just a few of what's available on the market:
• Cornish TB-83, TB-83 Extra, and TB-83 Extra Duplex. Originally designed and made for Brian May in the early 1970s, these units are considered by many to be the crème de la crème of boosters. Like most Cornish pedals, they are priced at a premium. The Duplex model actually features two TB-83 units in one housing, which allows you to set different boost levels and stack them if you wish.
• BBE Bohemian. Like most treble boosts, this is a re-creation of the classic Rangemaster circuit in a simple pedal format. It's true bypass, and it won't break the bank.
• Electro-Harmonix Screaming Bird. It doesn't get much simpler than this one. You get an on/off switch and a single knob to control the amount of boost. The Screaming Bird is also a good choice for those looking for a treble boost on a budget.
Until next month, I wish you great tone!
The two pedals mark the debut of the company’s new Street Series, aimed at bringing boutique tone to the gigging musician at affordable prices.
The Phat Machine
The Phat Machine is designed to deliver the tone and responsiveness of a vintage germanium fuzz with improved temperature stability with no weird powering issues. Loaded with both a germanium and a silicon transistor, the Phat Machine offers the warmth and cleanup of a germanium fuzz but with the bite of a silicon pedal. It utilizes classic Volume and Fuzz control knobs, as well as a four-position Thickness control to dial-in any guitar and amp combo. Also included is a Bias trim pot and a Kill switch that allows battery lovers to shut off the battery without pulling the input cord.
Silk Worm Deluxe Overdrive
The Silk Worm Deluxe -- along with its standard Volume/Gain/Tone controls -- has a Bottom trim pot to dial in "just the right amount of thud with no mud at all: it’s felt more than heard." It also offers a Studio/Stage diode switch that allows you to select three levels of compression.
Both pedals offer the following features:
- 9-volt operation via standard DC external supply or internal battery compartment
- True bypass switching with LED indicator
- Pedalboard-friendly top mount jacks
- Rugged, tour-ready construction and super durable powder coated finish
- Made in the USA
Static Effectors’ Street Series pedals carry a street price of $149 each. They are available at select retailers and can also be purchased directly from the Static Effectors online store at www.staticeffectors.com.
Computerized processes have given repair techs the power to deliver you a better-playing guitar. But how do they work?
When we need to get our guitars fixed by a professional, a few nagging questions run through our heads: Will the repair specialist be thorough? Will their procedures ensure an optimal sounding and easy-to-play instrument, or will they merely perform cursory work to make the guitar somewhat playable without resolving underlying issues? Have they followed the tested advancements in understanding, tools, and techniques, or are they stuck in the ideas of the ’70s?
Presently, many certified guitar-repair specialists possess the expertise required to deliver an instrument that both sounds and plays wonderfully. The standards set by manufacturers and distributors have significantly risen, safeguarded by rigorous quality protocols to guarantee the best possible acoustic experience for customers. Additionally, lutherie training has raised the bar for critical processes, and one of the most tricky is fretwork.
Traditional fretwork once involved manual labor, with technicians utilizing sandbags or similar supports to steady the neck as they straightened it with a truss rod during the filing process. A notable advancement in this field came in the mid 1970s when Don Teeter, an author and repair expert, imposed a new method: fixing the guitar body to the bench and using blocks to maintain the neck in a playing position. This refinement was one of many in the continued quest to produce superior instruments by standardized methods.
An example of the Plek’s readings from an acoustic guitar.
Photo courtesy of Galloup Guitars
In the late 1970s, another pivotal innovation was introduced by Dan Erlewine. He created an advanced fret jig with a specialized body-holding system and neck supports, adding another layer of precision to the repair process. During my collaboration with Dan in 1985, we developed a rotating neck jig that counterbalanced the forces of gravity, keeping the instrument in its playing orientation while adjusting the neck supports. This step represented a significant leap in establishing control and standardization of fretwork procedures in our industry. By 1986, our approach had evolved into a freestanding workstation coupled with a sophisticated hold-down mechanism and enhanced neck supports, culminating in increased accuracy, efficiency, and consistency. Over the decades, the Erlewine/Galloup rotating neck jig has become a benchmark in numerous shops, enhancing fretwork performance.
"This step represented a significant leap in establishing control and standardization of fretwork procedures in our industry."
By the 1990s, automated and computerized technologies permeated the guitar manufacturing and repair sectors. Initially applied by import companies in the mass production of guitars, the technology, although expediting processes, did not immediately achieve high execution standards. However, the tech dramatically improved over time, with computer-driven systems eventually transforming the industry. Contemporary automated production utilizing such advancements meets exceedingly high standards of precision. Some bespoke guitar manufacturers, such as Steve Andersen, were pioneers in adopting these methods, but it was companies like Taylor that established them in the modern era.
Inevitably, the progression of technology extended beyond the mere production of parts. Around 1995, German engineer Gerd Anke envisioned the integration of computer-assisted technology into enhancing instrument playability, giving rise to Plek technology, which uses computers to precisely measure and analyze the various components of a guitar, like neck relief, fret height, nut and bridge specs, and more. Nashville guitar-repair tech Joe Glaser was among the first to recognize the machine’s value, followed by San Francisco luthier Gary Brawer. When Heritage Guitar Inc. invested in a Plek machine, the guitar industry could no longer disregard the significance of this innovation.
“The machine’s scanning data confirmed that there was one nature of an ideal fret plane, done by hand or machine, and unsurprisingly, it conformed exactly to what physics predicts, not personal mojo.”
In the spring of 2022, Galloup Guitars obtained its first Plek machine. Promptly, our technician Adam Winarski paved the way for the Plek’s integration in our shop. Now, it’s a rarity for an instrument to leave our shop without having undergone Plek analysis and machining. Impressed by the results of our integration, we created “Intro to Plek” as a course for all students enrolled at the Galloup School of Lutherie, offering our students a practical introduction to this technology. We furthered this educational initiative with a comprehensive one-week intensive “Plek Certification Training Course” for both students and the public. This advanced Plek course serves those seeking to boost their knowledge base and employability in this high-precision field.
Plek is rapidly becoming an industry standard for major manufacturers and smaller shops alike. However, this does not mean that those without access to this technology cannot execute proficient fretwork. Personally, I continue to use my Erlewine/Galloup neck jig—not only out of nostalgia, but also because it remains an excellent method for delivering accurate and reliable guitars. Still, it’s undeniable that the process of fretting, fret dressing, and analytics of fretted instruments has undergone significant transformation, resulting in better sounding—and playing—guitars. And ultimately, that’s what it’s all about.
Plenty of excellent musicians work day jobs to put food on the family table. So where do they go to meet their music community?
Being a full-time musician is a dream that rarely comes to pass. I’ve written about music-related jobs that keep you close to the action, and how more and more musicians are working in the music-gear industry, but that’s not for everyone. Casual players and weekend warriors love music as much as the hardcore guitarists who are bent on playing full time, but they may have obligations that require more consistent employment.
I know plenty of excellent musicians who work day jobs not to support their musical dreams, but to put food on the family table. They pay mortgages, put children through school, provide services, and contribute to their community. Music may not be their vocation, but it’s never far from their minds. So where do they go to meet their music community?
A good friend of mine has studied music extensively in L.A. and New York. He’s been mentored by the pros, and he takes his playing very seriously. Like many, he always had day jobs, often in educational situations. While pro gigs were sometimes disappointing, he found that he really enjoyed working with kids and eventually studied and achieved certification as an educator. To remain in touch with his love of music, he plays evenings and weekends with as many as three groups, including a jazz trio and a country band. Not actually worrying about having a music gig that could support him in totality has changed the way he views playing out and recording. He doesn’t have to take gigs that put him in stressful situations; he can pick and choose. He’s not fretting over “making it.” In some way, he’s actually doing what we all want, to play for the music plain and simple.
Another guy I know has played in bands since his teens. He’s toured regionally and made a few records. When the time came to raise a family, he took a corporate job that is as about as far away from the music business as you can get. But it has allowed him to remain active as a player, and he regularly releases albums he records in his home studio. His longstanding presence in the music scene keeps him in touch with some famous musicians who guest on his recordings. He’s all about music head to toe, and when he retires, I’m certain he’ll keep on playing.
“Seek out music people regularly. They’re hiding in plain sight: at work, at the park, in the grocery store. They sell you insurance, they clean your teeth.”
I could go on, and I’m sure you know people in similar situations. Maybe this even describes you. So where do we all find our musical compadres? For me, and the people I’ve mentioned, our history playing in bands and gigging while young has kept us in touch with others of the same ilk, or with those who are full-time musicians. But many come to music later in life as well. How do they find community?
Somehow, we manage to find our tribe. It could be at work or a coffee shop. Some clubs still have an open mic night that isn’t trying to be a conveyor belt to commercial success. Guitarists always go up to the stage between changes to talk shop, which can lead to more connections. I like the idea of the old-school music store. Local guitar shops and music stores are great places to meet other musicians. Many have bulletin boards where you can post or find ads looking for bandmates. When I see someone wearing a band T-shirt, I usually ask if they’re a musician. Those conversations often lead to more connections down the line. Remember, building a network of musicians often requires persistence and putting yourself out there. Don’t be afraid to initiate conversations and express your interest in collaborating with others.
Of course, I’m lucky to have worked in the music sphere since I was a teen. My path led to using my knowledge of music and guitars to involve myself in so many adventures that I can hardly count them. Still, it’s the love of music at the root of everything I do, and it’s the people that make that possible. So whether you’re a pro or a beginner, seek out music people regularly. They’re hiding in plain sight: at work, at the park, in the grocery store. They sell you insurance, they clean your teeth. Maybe they’re your kid’s teacher. Musicians are everywhere, and that’s a good thing for all of us.
An amp-in-the-box pedal designed to deliver tones reminiscent of 1950s Fender Tweed amps.
Designed as an all-in-one DI amp-in-a-box solution, the ZAMP eliminates the need to lug around a traditional amplifier. You’ll get the sounds of rock legends – everything from sweet cleans to exploding overdrive – for the same cost as a set of tubes.
The ZAMP’s versatility makes it an ideal tool for a variety of uses…
- As your main amp: Plug directly into a PA or DAW for full-bodied sound with Jensen speaker emulation.
- In front of your existing amp: Use it as an overdrive/distortion pedal to impart tweed grit and grind.
- Straight into your recording setup: Achieve studio-quality sound with ease—no need to mic an amp.
- 12dB clean boost: Enhance your tone with a powerful clean boost.
- Versatile instrument compatibility: Works beautifully with harmonica, violin, mandolin, keyboards, and even vocals.
- Tube preamp for recording: Use it as an insert or on your bus for added warmth.
- Clean DI box functionality: Can be used as a reliable direct input box for live or recording applications.
See the ZAMP demo video here: https://www.youtube.com/watch?v=xJp0jE6zzS8
Key ZAMP features include:
- True analog circuitry: Faithfully emulates two 12AX7 preamp tubes, one 12AX7 driver tube, and two 6V6 output tubes.
- Simple gain and output controls make it easy to dial in the perfect tone.
- At home, on stage, or in the studio, the ZAMP delivers cranked tube amp tones at any volume.
- No need to mic your cab: Just plug in and play into a PA or your DAW.
- Operates on a standard external 9-volt power supply or up to 40 hours with a single 9-volt battery.
The ZAMP pedal is available for a street price of $199 USD and can be purchased at zashabuti.com.