
A rare interview with the engineer who created the Tube Screamer circuit.
In an effort to slow the growing percentage of retired citizens among its population, Japan passed legislation last April raising the mandatory retirement age from 60 to 65. Workers on the cusp who would have retired this year were grandfathered into the earlier age limit, with the caveat that their former employers offer them contract work if desired.
What does this have to do with guitar pedals? Iāll explain.
In April, Susumu Tamura of Matsumoto, Japan, turned 60 and opted for early retirement from the Nisshin Onpa Company. Readers familiar with Tube Screamer lore may recognize these names as, respectively, the designer and manufacturer of the original OD808 circuitāan OEM project for Ibanez went on to be branded as the TS808 Tube Screamer.
Thatās right, Susumu Tamura (who did not attend college but studied electronics at Shinshu industrial high school) is the engineer who invented the legendary 808 circuit thatās been used by countless artists and copied by more companies than you can shake a stick at.
Mr. Tamuraās retirement holds special significance for me, as I have worked closely with him since 1999 developing many of Maxonās current guitar effects. I felt it would be a fitting sendoff to interview Mr. Tamura about some highlights of his illustrious career, one that has affected (and effected) literally hundreds of thousands of musicians.
How did you become interested in electronics? I liked working on electronics from the time I was a boy. My earliest memory of this was working on a 1/24-scale model of an electric racing car. I made the circuit course for the car when I was still in grade school. When I was a junior high school student, I acquired an amateur radio engineer's license and used a transceiver that I made to communicate with overseas countries.
When did you start working for Nisshin Onpa (Maxon)? I was first hired in 1974. I have worked continuously and exclusively for them for the past 40 years.
When and why did Nisshin Onpa begin manufacturing guitar effects? Nisshin Onpa was originally established as an electric guitar pickup company. They initially began manufacturing pedals as OEM projects for other companies and then, from 1971, under their own Maxon brand.
ā Susumu Tamura, creator of the Tube Screamer circuit
What was the first pedal you designed for Nisshin Onpa? My first complete design was the Phase Tone PT999. Before that I had only redesigned PC boards for their booster and wah pedals.
What was the concept behind the 808 overdrive? We were looking to make a pedal that was not hard clipping like fuzz or distortion, but more like the overdrive obtained from tube amps. I think we settled on that āboxyā tone, with the midrange emphasized, because it worked well with a wide variety of guitars and guitar amplifiers, including both LP-style and the Stratocaster-type guitars.
So the 808ās famous āmid humpā was a conscious effort to make the circuit compatible with a variety of amplifiers and guitars? Yes. By controlling the wild bass volumes of standard fuzz and distortion, as well as the jarring overtones, of the upper register, a more versatile pedal was developed.
The 808 circuit was the first of its kind. Did you realize you had created something special? Many journalists have asked us this. From our view, we simply had to come up with a pedal to compete with the BOSS OD-1 Overdrive and MXR Distortion+. It was similar to how one record company commercializes a sound, and then other companies follow that trend with similar music. So the initial product concept was not viewed as āspecial.ā But of course, I wanted a lot of people to love it! Between the promotional sales power of Godlyke and Hoshino and the super-famous musicians whoāve used the pedal, we were able to ship 350,000 units of the various 808 models over the years.
This rackmountable junction box for the Maxon PE3248 was custom-built for guitarist Masayoshi Takanaka.
Of all the signal processors you designed for Maxon and Ibanez, which project was the most memorable and challenging? We designed a programmable switching system, the PE3248. This was custom-made for Masayoshi Takanaka, a famous Japanese musician. From this came the basic idea for multi-pedal/multi-effect products such as the UE400 and DUE400. Iām also proud of the analog delays that used BBD ICs, such as AD80 and AD9. These originated with the AD230 analog delay series, whose sound is still unparalleled. Another is the DCP (Digitally Controlled Processor) analog programmable effect pedal series, which includes the PDS1.
What was superior about the AD230 delay? When it came out there were no high-quality, rackmountable, maintenance-free delays using BBDs. Most high-end delays used magnetic tape. The AD230 suppresses jarring upper-register overtones for a very smooth, realistic delay sound. Also, the AD230 was an all-in-one multi-delay unit with modulation and short delay for flanging and chorusing, as well as long delays.
What are your favorite pastimes outside of audio engineering?
I enjoy listening to jazz and going to jazz concerts. I do system construction related to personal computers. I enjoy movies, U.S. TV dramas, and documentaries. I also enjoy sea fishing.
Are there any products youād still like to develop?
I hope to redesign the programmable analog effect DCP. It was discontinued, but Iād like to revive those designs.
Any final thoughts?
Digital is extremely close to the real thing, but it is not the real thing. The real thing is analog. Digitalās primary advantage is that there is no deterioration in storage and transmission. However, the musician and the audienceāthe ears, eyes, mouths, and fingers that make and appreciate musicāare all analog.
Thanks to Mr. Susumu Tamura for agreeing to this interview and for creating so many useful music-making tools!
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.
Two Iconic Titans of Rock & Metal Join Forces for a Canāt-Miss North American Trek
Tickets Available Starting Wednesday, April 16 with Artist Presales
General On Sale Begins Friday, April 18 at 10AM Local on LiveNation.com
This fall, shock rock legend Alice Cooper and heavy metal trailblazers Judas Priest will share the stage for an epic co-headlining tour across North America. Produced by Live Nation, the 22-city run kicks off September 16 at Mississippi Coast Coliseum in Biloxi, MS, and stops in Toronto, Phoenix, Los Angeles, and more before wrapping October 26 at The Cynthia Woods Mitchell Pavilion in The Woodlands, TX.
Coming off the second leg of their Invincible Shield Tour and the release of their celebrated 19th studio album, Judas Priest remains a dominant force in metal. Meanwhile, Alice Cooper, the godfather of theatrical rock, wraps up his "Too Close For Comfort" tour this summer, promoting his most recent "Road" album, and will have an as-yet-unnamed all-new show for this tour. Corrosion of Conformity will join as support on select dates.
Tickets will be available starting Wednesday, April 16 at 10AM local time with Artist Presales. Additional presales will run throughout the week ahead of the general onsale beginning Friday, April 18 at 10AM local time at LiveNation.comTOUR DATES:
Tue Sep 16 ā Biloxi, MS ā Mississippi Coast Coliseum
Thu Sep 18 ā Alpharetta, GA ā Ameris Bank Amphitheatre*
Sat Sep 20 ā Charlotte, NC ā PNC Music Pavilion
Sun Sep 21 ā Franklin, TN ā FirstBank Amphitheater
Wed Sep 24 ā Virginia Beach, VA ā Veterans United Home Loans Amphitheater
Fri Sep 26 ā Holmdel, NJ ā PNC Bank Arts Center
Sat Sep 27 ā Saratoga Springs, NY ā Broadview Stage at SPAC
Mon Sep 29 ā Toronto, ON ā Budweiser Stage
Wed Oct 01 ā Burgettstown, PA ā The Pavilion at Star Lake
Thu Oct 02 ā Clarkston, MI ā Pine Knob Music Theatre
Sat Oct 04 ā Cincinnati, OH ā Riverbend Music Center
Sun Oct 05 ā Tinley Park, IL ā Credit Union 1 Amphitheatre
Fri Oct 10 ā Colorado Springs, CO ā Broadmoor World Arena
Sun Oct 12 ā Salt Lake City, UT ā Utah First Credit Union Amphitheatre
Tue Oct 14 ā Mountain View, CA ā Shoreline Amphitheatre
Wed Oct 15 ā Wheatland, CA ā Toyota Amphitheatre
Sat Oct 18 ā Chula Vista, CA ā North Island Credit Union Amphitheatre
Sun Oct 19 ā Los Angeles, CA ā Kia Forum
Wed Oct 22 ā Phoenix, AZ ā Talking Stick Resort Amphitheatre
Thu Oct 23 ā Albuquerque, NM ā Isleta Amphitheater
Sat Oct 25 ā Austin, TX ā Germania Insurance Amphitheater
Sun Oct 26 ā Houston, TX ā The Cynthia Woods Mitchell Pavilion
*Without support from Corrosion of Conformity
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.