A smart, potent boost that’s much more than meets the eye.
A well-built and truly great-sounding boost/line-driver pedal boasting a handful of clever bonus functions.
Some buyers might find it a little pricey.
Source Audio ZIO
Source Audio nicknamed the new ZIO pedal “the Better Box,” which is a fair summation of what this thing will do for your tone. Purists may rant endlessly about the virtues of plugging straight into an amp. But many legendary players understood that a little extra “hot” between guitar and amp can add up to magic. From Jimmy Page’s Echoplex preamp to Brian May’s Rangemaster to Angus Young’s Schaffer-Vega wireless system, a lot of signature sounds have been shaped with a little extra kick—and often from unexpected sources that are something other than simple boosts. Source Audio’s first all-analog pedal is more than a conventional booster, too. And, to some degree, it celebrates these alternate paths to boosting tone.
Designed in collaboration with Christopher Ventner of SHOE Pedals, ZIO is short for Impedance (“Z” in electro-speak), Input, and Output, which hints at the front-to-back thinking behind the design. The pedal’s input impedance is calculated to optimize the signal from a traditional high-impedance guitar pickup and send it down the line as a sweetened low-impedance version of itself. In doing so, ZIO helps your signal survive long chains of pedals and cable runs. Four selectable modes each offer up to +20 dB of gain and three levels of cable-mimicking capacitance to subtly brighten or darken your tone as desired.
- 0:00 – ZIO pedal off.
- 0:08 – ZIO on, JFET setting.
- 0:44 – Change to Sudio setting.
- 1:04 – Change to E-Plex setting.
- 1:24 – Pedal off again.
Got Some Front
Though its methods for tone shaping might seem slightly esoteric on the surface, ZIO is easy to use. The knobs are a single control for output level and a 4-position rotary switch, dubbed circuit, which selects the preamp voicing. The JFET mode uses Burr-Brown op amps to generate a transparent, low-distortion boost, mimicking the response of a clean tube amp input. Low-cut mode reduces frequencies that can cause mud and rumble, lending more presence. Studio mode successfully replicates the effect of using a Pultec compressor to cut muddy lower-mids and enhance presence. The E-Plex mode, meanwhile, replicates the rich, clear, and just slightly colored sound of a vintage Echoplex preamp.
Source Audio is mindful of the fact that a long cable’s capacitance is an essential part of some players’ overall sonic brew, and that a booster/line-driver in front of the chain can negate the capacitance effect. So ZIO includes a tone toggle that offers three levels of cable-capacitance emulation. Bright represents a low-capacitance load and the brightest tone—as you might hear from a very short, high-quality cable. Med approximates a 15-foot cable and softens highs just a bit. Dark achieves the mellowing effect of longer or coiled cables.
A 2-position mini-toggle to the right is specifically tailored for players that will keep ZIO on at all times and allows the user to configure the footswitch as a mute function in place of the traditional off setting. That means one of the two outputs on the left side of the pedal can feed a tuner running independent of the signal chain or deliver a line-level signal to any amp, console, interface, or input that you want to keep live while muting the main output. Nine-volt DC power feeds the ZIO, with a center-negative input on the crown. It’s all housed in a rugged brushed-aluminum enclosure that’s not quite mini-pedal small but compact at 4" x 2.3" x 2.2" tall (including the knobs).
I fast fell I love with ZIO’s variety of boost tones and easy integration into my pedalboard.
All Lined Up
I fast fell in love with ZIO’s variety of boost tones and easy integration into my pedalboard. It flat-out sounds fantastic. Some players will no doubt consider ZIO pricey for a booster pedal with a few extra bells and whistles. But the enhanced tones will be well worth it for many guitarists, even if they only ever use one circuit mode.
That said, switching between the circuits is half the fun. And at times I fantasized about a rig based on two ZIO pedals: One that I could use as a transparent always-on line driver and tone juicer, and another as a proper boost. Used in the latter application, ZIO made my tweed-style combo bite and break up a lot more readily. It was also secret sauce for a Friedman Mini Dirty Shirley, making its Plexi-style crunch and lead tones extra delectable. While all four preamp-emulating modes proved effective—and I could certainly find many useful applications for each—I really fell for the Pultec-inspired studio mode. It’s sweet, juicy, clear, and articulate, and it simply makes everything more luscious. It can also offer a playful dose of extra drive when you crank the output past 11 o’clock. It sounds fantastic as an amp-input driver in this setting. The tone switch settings are pretty subtle, but that’s the idea: You use it to fine tune the feel and character of the signal once you’ve dialed in the other functions to near-perfection.
Boosts are often one-trick ponies. But Source Audio and Christopher Ventner’s sly and very smart selection of features make ZIO a whale of a tone enhancing machine—and a sneakily versatile one at that. Yes, the ZIO is a simple device in principle, but it does what it does exceptionally well. And while many players will regard the tone switch and switch modes as minor bonus features, I suspect they will prove invaluable to many exacting tone crafters and super-functional in some rigs. For me, at least, they help make ZIO one of the tastiest boost pedals I’ve tried in quite some time.
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Jazz virtuoso Lionel Loueke joins us in contemplating who we’d put at the helm while making the album of a lifetime. Plus, musical obsessions!
Q: If you could make an album with any producer, alive or dead, who would it be?
Lionel Loueke — Guest Picker
Photo by Elan Mehler
A: Quincy Jones. He’s done so much. He’s someone I’d love to work with just to get a different experience. I love his work but the main one for me is Michael Jackson’s Thriller. I know him personally: I went to Morocco with him when he was presenting the Global Gumbo All Stars, and I also worked with him in the studio when I was playing with Herbie Hancock on his new project. Quincy wasn’t producing, Terrace Martin was the producer, but it was so good to be in the studio with all those great musicians.
Photo by Sam Santos
What I really like about Quincy is how he detects talent. Producing is one thing, but he finds the right musicians who have something unique or different to say. I mean, Ray Charles … he’s produced so many greats in all genres.
Lionel Loueke's Current Obsession:
Right now, my obsession is all about the drums. I feel like I present myself as being a frustrated drummer, because I play a lot of percussion on the guitar and I started as a percussion player, so it’s always been part of what I do. I’m not looking to be a drummer, I just feel really connected to any percussion instrument, and I feel drums will help me go even deeper in my musical multitasking.
I think it was Miles Davis who said that every musician should try to play drums. And I truly believe that because with the drums you have four parts of your body to synchronize: legs, arms, feet, hands. When it comes to rhythmically thinking, drums are something every musician should try.
I just talked to my friend, drummer Ferenc Nemeth, who has been playing in my band for 20 years, about buying a drum kit because I don’t have one. Right now, I have drumsticks and I’m beating on everything [laughing].
Matt Dunn — Reader of the Month
A: I would probably pick Brian Eno/Daniel Lanois specifically because of their work on The Unforgettable Fire album with U2. While I’m mostly into punk/garage rock, I was always so blown away by early U2 records and their approach to songwriting. I would do anything to write my own versions of “Bad” or “A Sort of Homecoming” with their guidance and production.
U̲2 - The Unforgettable Fire CD2 Deluxe (Full Album)
Matt Dunn's Current Obsession:
Bad Religion. Despite being a punk fan my whole life, I was always more into English and East Coast bands. I recently tried to expand my world to include those SoCal punk bands and I cannot find anyone better than them. “Streets of America,” “American Jesus,” and “We’re Only Gonna Die” are on repeat.
Ted Drozdowski — Senior Editor
A: It’s a toss between T Bone Burnett and Daniel Lanois.
I love the low sound T Bone perfected with his own The True False Identity and Alison Krauss/Robert Plant’s Raising Sand. But I’m crazy about how Lanois brings the ambient playbook to roots music, producing great albums for Dylan, Emmylou Harris, the Nevilles, and more.
Ted Drozdowski's Current Obsession:
I’m in the early stages of working on a feature-length film incorporating songs, storytelling, psychedelic lighting, original artwork, and aerial dance. How could I not be obsessed about it?
Nick Millevoi — Associate Editor
A: The Flaming Lips and Dave Fridmann. I can’t begin to predict how my music and their vision would really come together, and that’s what I love about the idea of working with those guys. Every Lips album and side project is completely immersive and multidimensional. It would be a dream to tap into their whole technicolor vibe and see how they’d handle sounds, arrangements, and writing firsthand.
Flaming Lips - See the Leaves
Nick Millevoi's Current Obsession:
Eighties drum machines. I’m deep in the throes of an obsession: I recently bought an Alesis HR-16 and the sounds are so sick—and so ’80s! —but it has opened up a potential gear wormhole.
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May 11, 2022
Megadeth founder teams up with Gibson for his first acoustic guitar in the Dave Mustaine Collection.
For the new acoustic guitar, Gibson acoustic luthiers in Bozeman, Montana collaborated with Dave Mustaine the legendary guitarist, vocalist, songwriter, and founder of the multi-platinum selling and Grammy Award-winning band, Megadeth. The Gibson Dave Mustaine Songwriter in Ebony is available in a both a standard version and a limited edition model, signed by the artist. Part of the Dave Mustaine Collection, the new Dave Mustaine Songwriter in Ebony is the first 24-fret neck ever installed on a Gibson acoustic guitar. With a slightly thinner walnut body, the Dave Mustaine Songwriter guitar features a cutaway for easy access to the upper frets.
Megadeth has gone on to sell more than 50 million albums worldwide, earning many accolades along the way, including a Grammy Award for the title track from their most recent album Dystopia, along with 12 additional Grammy nominations, as well as five consecutive platinum/multi-platinum albums. Megadeth has headlined many of the biggest stages in the world and recently played their most successful tour ever, closing every night on the North American amphitheater “Metal Tour of the Year”. Also, a New York Times bestselling author and sought after speaker, host, and commentator, Mustaine has remained a standard bearer for metal and heavy guitar rock, combining a musical and technical standard with the punk and rock n’ roll ethos and attitude.
Icons: Dave Mustaine of Megadeth
Explore the new Dave Mustaine Songwriter in Ebony, www.gibson.com.
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