By splitting your signal into low- and high-frequency bands, and feeding them to separate effects loops, the XO lends a new, expansive vocabulary to the effects you already have.
Smart, intuitive controls. Exponentially widens the tone potential of just a few effects. High quality construction
Players with limited use for such effects will consider it expensive.
$279
Great Eastern FX
greateasternfx.com
Though some musicians consider it a chore, I relish the creative possibilities associated with mixing a song or record. Working with the Great Eastern FX XO Variable Crossover feels a lot like the process of experimental mixing using EQ and outboard effects. The concept is simple: The XO splits the low and high frequencies from your input into two separate bands, which are routed via corresponding send and return jacks to different effects or series of them.
Depending on how you set the crossover frequency, the return balance, dry blend, and phase, you can fluidly shape, blend, and move between sounds that are subtly different or radically deconstructed. On the surface, it might look and sound like a cumbersome process. In reality, it’s intuitive, fun, and full of surprises
Fear Not the Frequency Shift
The XO’s control set will probably look alien to most guitarists. The largest knob controls the crossover frequency, which determines the point at which the full frequency band is divided and sent to the low and high send and return. The range button just to its right selects two frequency ranges: 50 to 600 Hz, or 300 Hz to 3.4 kHz. The first is recommended for use with bass, the second for guitar, but you can experiment with either setting for any instrument. The return balance knob sets the relative levels of the two effects returns and the dry blend knob performs its namesake task. The phase button can be used to either correct phase issues when the two bands are out of phase or applied creatively to fashion out-of-phase variations on a sound. A very useful send button, meanwhile, switches the high and low sends, enabling instantaneous selection of mirror-image frequency and effects mixes.
Mutating Tone Tangles
My first experiments with the XO were simple: sending the low band to a delay with long repeats and the high band to another delay with fast repeats, lurking just at the brink of oscillation. The ways I could blend these divided and reconstituted tone composites were often unexpected, surprising, and totally inspiring. I could set up signals that found trebly repeats hovering at the edge of feedback, while low and low-mid frequencies (which can overwhelm a self-oscillating signal) provided a fat foundation for the resonant, ringing top end—a totally cool sound that responded in really interesting ways to picking dynamics and different rhythmic patterns. In a modification of that formula, I routed an intensely throbbing Vox Repeat Percussion clone, slow-sweeping phaser, and long-repeat delay to the low band and assigned a clean, heavily compressed, slapback to the high frequencies. In this configuration, simple folk-rock chords and melodic lead lines took on complex, alien alter egos, sometimes sounding like two players—one handling a bubbling bass synth, and a guitarist carrying the tune via the clear detailed high end. When the pulsing low end got tiresome, it was easy to dial in more dry signal via the dry-blend knob or dial in a mix favoring the tighter, chiming high band.
“Simple folk-rock chords and melodic lead lines took on complex, alien alter egos, sometimes sounding like two players.”
The spins you can put on these recipes are endless. Situating an octave-down pedal amid the tremolo and phaser made the two bands even more distinctive and heightened the illusion of a guitarist and synth player working together. You can mix fuzzy, thumping low end with ringing and heavily chorused top-end output. Or you can blend two similar but distinct effects to create oddly chorused and powerful widescreen tonalities.
The cool part of all this potential is that it can be realized with a single amp and just a few pedals. Some of my most radical sounds came via just four or five pedals including the XO, which adds up to a very modest and portable array, all things considered. Players that work with pedalboards that count stomps in the double digits could disappear in labyrinths of sound that are as immersive as those afforded by synthesis. And while XO is, after some practice, easy to control, the new, chaotic molecular reactions provoked by unorthodox stimulation of your pedals all but guarantees unique results. You will definitely find new sounds and new ways to play and compose here.
The Verdict
The XO Variable Crossover is more likely to see service as a studio tool than become a staple of live setups, though plenty of courageous musicians will find it practical in that environment. Although the mechanics and principles behind its workings can seem complex at first, it can be used effectively and dramatically with just a few stompboxes. The sounds and voices it can extract from, say, a phaser and a delay are exponentially greater in number than what you’d get by simply using two such effects in series, even if some of them are subtle. And the ability to manipulate and warp these sounds on the fly with the XO’s elegant, simple control interface could bring out your inner Lee “Scratch” Perry or DJ Shadow—creating new moods, scenes, and tapestries that can turn a simple song or riff into a moving, mutable, and flowing tone story.
The Welsh musician brings along his trusty Yamaha and a double-decker pedalboard for his first U.S. shows.
It didn’t take too long for Welsh guitarist Chris Buck to go from making YouTube videos to playing the legendary Royal Albert Hall. Earlier this year, he brought his band Cardinal Black to the U.S. for a short tour that included a stop at Nashville’s Basement East. That’s where PG’s John Bohlinger caught up with Buck before the gig for a look at what’s powering his blues-rock sound these days.
Buck’s trademark goldtop Yamaha Revstar is out for the rip, and he spared little space on his double-tiered pedalboard, but a special loaner Gibson and a modded Fender amp added some extra flair to the Nashville show.
Brought to you by D’Addario.Rev the Engine
Built by Yamaha’s custom shop in Calabasas, California, this goldtop Revstar came to Buck during NAMM 2020. He likes that the newer style doesn’t have the “baggage” attached to it that a Strat or Les Paul does. This one was built mostly to typical RS502 specs, with two P-90 pickups, a 3-way selector switch, wraparound bridge, and a chambered body. Buck fits this one with Ernie Ball Mega Slinky strings (.0105-.048) and strikes it with Jim Dunlop Tortex 1.14mm picks—a choice he copped from his guitar hero Slash.
Black Bird
Buck was inspired by Rival Sons’ guitarist Scott Holiday to snag this Firebird-style Firehawk by French builder Springer, complete with a Vibrola system. It’s fitted with Sunbear Handwound pickups.
Loaner Les Paul
On his way into Nashville, Buck worried that he didn’t have a Revstar-style backup should his main axe go down, so he hit up Gibson’s Mark Agnesi for a suitable option. Agnesi came through with this 1958 Les Paul Junior Double Cut Reissue, a no-frills rock machine equipped with a single P-90 pickup.
Sweet Victory
Victory has helped Buck out on his American run by hooking him up with V40 Deluxe combos where they can. In Nashville, Buck ran the V40 in a dual-mono setup with a Fender Deluxe Reverb, which had been modded and loaned by Mythos Pedals’ Zach Broyles. The first channel emulates a Bassman sound, while channel two is classic Deluxe Reverb.
Two-Tier Tone Temple
Buck might’ve left his amps back home, but he made up for the absence with a shop’s worth of tone-sculpting tools. This stomp station houses two levels of pedals, with first in the chain being a classic Dunlop Cry Baby. Next is a ThorpyFX Electric Lightning, Buck’s signature drive pedal, then a 29 Pedals EUNA, Mythos Golden Fleece, Mythos Mjolnir, Mythos Air Lane Drive, Snouse BlackBox Overdrive 2, Great Eastern FX Co. Small SPeaker Overdrive, Analog Man King of Tone, Origin Effects Cali76, Universal Audio Golden Reverberator, and Keeley Katana.
Then comes Buck’s modulation section, starting with a Mooer Trelicopter and a Catalinbread Echorec. A Line 6 HX Stomp XL handles some more delay and reverb sounds, plus some chorus. A Universal Audio Starlight Echo Station and Boss RE-202 Space Echo finish off the chain. A GigRig G3 helps Buck switch things up without breaking a sweat. Bucks rests it all on a pair of Schmidt Array pedalboards.
Shop Chris Buck's Rig
Gibson 1958 Les Paul Junior Double Cut Reissue
Ernie Ball Mega Slinky Strings
Fender Deluxe Reverb
Dunlop Cry Baby
Origin Effects Cali76
Universal Audio Golden Reverberator
Keeley Katana
Catalinbread Echorec
Line 6 HX Stomp XL
Universal Audio Starlight Echo Station
Boss RE-202 Space Echo
A flexible fuzz conjures a unique voice with a vintage accent, with a helping of delectable overdrive sounds on top.
Inhabits a unique tone space on the Brit-fuzz spectrum. Rich low- and mid-gain overdrive, boost, and distortion sounds. Top quality. Thoughtful design.
Highest gain fuzz sounds can be toppy.
$285
Great Eastern FX Co. Focus Fuzz
greateasternfx.com
Fuzz boxes don’t get much prettier than the Focus Fuzz from Great Eastern FX Co. And if you’re into mid-to-late-’60s fuzz, you may well find they don’t come much cooler sounding either. Great Eastern founder David Greeves describes the sound of the Focus Fuzz as something between a Tone Bender, a Fuzz Face, and a Dallas Rangemaster. Citing those touchstones is not unusual when reaching for a way to describe a new vintage-style fuzz. But in the case of the Focus Fuzz, Greeves isn’t making offhanded claims. The Focus Fuzz truly seems to thread a line between the open, bassier qualities of a germanium Fuzz Face and the fierce, metallic, buzzy compression of a Tone Bender. At lower gain settings, it approximates the performance of a Rangemaster in many respects. It’s responsive to playing guitar volume and tone dynamics. And it’s even tempered at both ends of the gain spectrum, too. Moderate gain settings dish bushels of killer overdrive sounds and jangly near-clean tones. If you can’t find a cool dirt sound here, you might consider frog farming instead.
Beautifully Constructed Deconstruction
Great Eastern hails from Cambridge, England—birthplace of the great Pink Floyd. And like the Floyd of old, Great Eastern has a clear affinity for provocative sounds. The company’s roster of effects is small but heavy on quality and substance and includes the much-too-modestly-named Small Speaker Overdrive and Design-A-Drive. The Focus Fuzz is built with the same sense of inventiveness and practicality that distinguishes those devices. Circuit construction is immaculately executed on through-hole board. And apart from a few hard-to-source parts, which we’ll get into later, the circuit looks easy to service if it fails. I suspect such incidents will be rare.
“The distortion is remarkable. It’s articulate and communicates individual string detail clearly, even at high-gain settings.”
The Focus Fuzz is more than well-built. It’s a clever effect that considers a lot of musical approaches and makes expression within different realms of gain and aggression easy. Apart from the cool fundamental fuzz voice—which so keenly splits the difference between Fuzz Face and Tone Bender—the real highlight of the Focus Fuzz circuit is the fuzz control, which also reduces bias voltage as gain is increased. The concurrent adjustment of the two tone ingredients is a huge part of what makes the Focus Fuzz sound so rich at lower fuzz volumes. And that’s a key difference between the Focus Fuzz and many classic circuits, which tend to get spitty and fractured at lower gain levels.
These boosted, overdriven, and sweetly distorted low- and mid-gain sounds are some of the Focus Fuzz’s finest voices. And within various, even slight adjustments of the gain and the focus control (which adds gain as you boost treble), you can find toothy Billy Gibbons tones, high octane jangle settings, punky grind, and many more shades of harmonically charged boost and drive. As for the Focus Fuzz in wide-open mode? Well, it’s a ripper. Lead tones are punky, focused, and white hot. Stooges riffs are explosive. And if you’re desperate to rage, the Focus Fuzz is beautiful therapy.
The Verdict
There’s only one bummer about the Focus Fuzz. It’s hard to find. Greeves initially limited production to 250 units—largely because the Russian invasion of Ukraine complicated sourcing the NOS transistors at the heart of the pedal. Greeves plans additional runs when he can obtain additional transistors. In the meantime, he's planning a silicon version that he can reliably keep in production.
However scarce the Focus Fuzz becomes, it’s worth seeking, buying, or borrowing. Because if you go into a session or a gig with unfamiliar backline or in new surroundings, the Focus Fuzz can be a source of much comfort and reassurance. If you’re patient enough to master the simple but complex relationships that can exist between the Focus Fuzz control array and the controls on your guitar, you can conjure scores of colorful treble-boosted, overdriven, distorted, and freak-fuzzed tones that can situate themselves boldly in a live or recorded setting. At around $285 at the time of this writing, the Focus Fuzz has a luxurious price tag, but its range and utility make the price seem relatively modest.