Aguilar designed the H.A.L.O. to get natural amp overdrive but with more touch sensitivity and response than you typically get from a stompbox.
Whether you’re a high-profile artist or a guitar hobbyist, there’s a good chance you’ve had reason to pay attention to the work of Alex Aguilar. From his time building bass amps at Aguilar Amplification to his work as a guitar columnist, Aguilar has been chasing great tone for more than 40 years.
His newest company, Alairex, is thus far a fairly small outfit, with the H.A.L.O. overdrive reviewed here being the company’s first and only product so far. But what the Alairex line may lack in quantity, it makes up for in terms of thoughtful design and engineering, because the H.A.L.O. is hardly another run-of-the-mill overdrive. Aguilar designed the H.A.L.O. to get natural amp overdrive but with more touch sensitivity and response than you typically get from a stompbox. Impressively, the unit achieves many of those aims, giving you tone-crafting power that you don’t often get from an overdrive.
Heaven Sent
The robust little H.A.L.O. weighs in at
almost 1 1/2 pounds, and you’ll definitely
notice how sturdy and stage ready it feels.
But you’re more likely to be struck by the
myriad ways you can tweak its tones. The
all-analog circuit controls two footswitchable
gain modes, each with its own dedicated
gain and master volume controls. Three
smaller knobs at the top edge let you boost
or cut sub frequencies, midrange response,
and upper mids. There’s also a master tone
control that sweeps through a range of voicings
from super bright to dark and mellow.
You can also power the pedal with an 18V
power supply to increase headroom if the
tone is too congested for your liking.
The pedal’s 3-way shape toggle enables you to switch between two diode-clipping modes or a clean boost mode in the middle position. Most analog overdrives use either symmetrical (Ibanez Tube Screamerstyle) or asymmetrical (Boss SD-1 Super Overdrive-style) diode clipping, but the H.A.L.O. attempts to give you the best of both worlds by opening up access to the smooth, natural response of even-order harmonic distortion that’s a hallmark of power-tube overdrive, or the more fluid and compressed odd-order harmonic distortion that’s common in gained-out preamp overdrive. Its 3-way saturation toggle adds the option of piling even more distortion and compression on both gain modes, or on the second gain mode exclusively.
Tone Evolution
The H.A.L.O.’s control layout looks daunting
at first, but it’s actually very intuitive
and responsive once you’ve done a little
homework.. There are a lot of different
tones on tap, and really the only hurdle
you’ll face is deciding which of the many
flavors works best.
With a Vox AC30 and a Stratocaster, I set the H.A.L.O. for asymmetrical clipping and the gain and tone-shaping controls at noon. Even at these relatively conservative levels, there was a very obvious jump in volume. Turn the asymmetrical mode’s gain control up to about 1 o’clock, and you get even more volume, in addition to a thicker midrange and more robust low end—perfect for Zeppelin riffs and crunchy ’70s-rock staples. It’s not unusual for a good overdrive to send an AC30 to Page-ian heights, but with the H.A.L.O., you also notice how much detail remains intact within the snarl and grind. And the bass, contour, and presence knobs are all very effective for fine-tuning the distortion and tailoring output to your guitar and amplifier.
At extreme levels, the gain control will drive most amps into Van Halen-heavy raunch that works as well for clear chords as legato leads. But you can also use your guitar’s volume to take advantage of the pedal’s exceptional sensitivity—it cleans up without obscuring picking dynamics.
Ratings
Pros:
Outstanding sensitivity. Great flexibility. Bulletproof
build. lots of gain on tap.
Cons:
Tone gets muddy with hot pickups and extreme gain
settings. Expensive.
Tones:
Ease of Use:
Build:
Value:
Street:
$399
Alairex
alairex.com
Alairex doesn’t bill the H.A.L.O. as a pedal for metal guitarists, but it works beautifully for heavy rock in the second gain mode, especially when you put highoutput humbuckers at the front of the signal chain. You’ll hear a lot of aggressive mids, though the bass can lose some of its stand-and-deliver tightness under barrages of staccato picking or palm-muted triplets. Backing off of the bass control brings back some low-end foundation and a little more softness in the bass attack, illustrating just how vital the tone controls are to getting the most out of the H.A.L.O.
Engaging the saturation switch makes the second gain mode monstrous—capable of grind that would turn the head of any metal fanatic, as well as a broad range of high-gain colors that you can transform subtly or radically with your guitar’s volume knob. You’ll also hear and feel a little sag at this point, which is great for lower-gain rhythm tones. Paired with the AC30, this mode yielded a voice reminiscent of a 50-watt Marshall JCM800.
The Verdict
Alairex’s Alex Aguilar is a tone-shaping
veteran, and his new H.A.L.O. lives up
to the lofty expectations that come with
a resume like his. It’s a multifaceted overdrive
machine capable of everything from
velvety drive to raging distortion. But
what’s even cooler is the extent to which
the H.A.L.O. enables you to do much of
that work yourself with pick attack and
your guitar’s controls. This is the rare
pedal that can move between a strong personality
and a natural, near transparency,
depending on how you set it up. And that
makes it one of the most musical overdrives
you’ll find anywhere.
Join PG contributor Tom Butwin as he explores all-new versions of the Framus Hootenanny 12-string and 6-string acoustics—made famous by John Lennon and now available with modern upgrades. From vintage-inspired tone to unique features, these guitars are built to spark creativity.
Neil Young’s ’70s hits are some of the most recognizable radio rock jams of all time. But Neil’s guitar playing continued to grow over the ensuing decades, as he traversed styles from blues to country to electronic to rockabilly and beyond, eventually developing one of the most tonally decadent, fully formed improvisational voices in the entire guitar universe.
Neil Young’s ’70s hits are some of the most recognizable radio rock jams of all time. But Neil’s guitar playing continued to grow over the ensuing decades, as he traversed styles from blues to country to electronic to rockabilly and beyond, eventually developing one of the most tonally decadent, fully formed improvisational voices in the entire guitar universe.
Like any discography that’s been growing over the course of more than half a century, it can be hard to decode Young’s work. And with such an adventurous spirit, it could be easy to make some missteps and miss out on his best guitar works. In this episode, Nick guides Jason through some of his hero’s finest moments.
More news from Neil always seems to be on the horizon, so here’s your chance to catch up.
This episode is sponsored by Gibson.
This Japan-made Guyatone brings back memories of hitchin’ rides around the U.S.
This oddball vintage Guyatone has a streak of Jack Kerouac’s adventurous, thumbing spirit.
The other day, I saw something I hadn’t noticed in quite some time. Driving home from work, I saw an interesting-looking fellow hitchhiking. When I was a kid, “hitchers” seemed much more common, but, then again, the world didn’t seem as dangerous as today. Heck, I can remember hitching to my uncle’s cabin in Bradford, Pennsylvania—home of Zippo lighters—and riding almost 200 miles while I sat in a spare tire in the open bed of a pickup truck! Yes, safety wasn’t a big concern for kids back in the day.
So, as I’m prone to do, I started digging around hitchhiking culture and stories. Surprisingly, there are organized groups that embrace the hitching life, but the practice remains on the fringe in the U.S. Back in the 1950s, writer Jack Kerouac wrote the novel On the Road, which celebrated hitchhiking and exposed readers to the thrill of maverick travel. Heck, even Mike Dugan (the guitarist in all my videos) hitched his way to California in the 1960s. But seeing that fellow on the side of the road also sparked another image in my brain: Yep, it always comes back to guitars.
Let me present to you a guitar that’s ready to go hitching: the Guyatone LG-180T, hailing from 1966. The “thumbs-up” headstock and the big “thumb” on the upper bout always made me think of thumbing a ride, and I bought and sold this guitar so long ago that I had forgotten about it, until I saw that hitchhiking dude. Guyatone was an interesting Japanese company because they were primarily an electronics company, and most of their guitars had their wooden parts produced by other factories. In the case of the LG-180T, the bodies were made by Yamaha in Hamamatsu, Japan. At that time, Yamaha was arguably making the finest Japanese guitars, and the wood on this Guyatone model is outstanding. We don’t often see Guyatone-branded guitars here in the U.S., but a lot of players recognize the early ’60s label Kent—a brand name used by an American importer for Guyatone guitars.
With a bit of imagination, the LG-180T’s “thumbs up” headstock seems to be looking for a roadside ride.
Kent guitars were extremely popular from the early ’60s until around 1966. The U.S. importer B&J fed the American need for electric guitars with several nice Kent models, but when the Guyatone contract ended, so did most of the Kent guitars. After that, Guyatone primarily sold guitars in Japan, so this example is a rare model in the U.S.
“Unless you are a master at guitar setups, this would be a difficult player.”
This headstock is either the ugliest or the coolest of the Guyatone designs. I can’t decide which. I will say, no other Japanese guitar company ever put out anything like this. You have to give the Guyatone designers a thumbs up for trying to stand out in the crowd! Guyatone decided to forgo an adjustable truss rod in this model, opting instead for a light alloy non-adjustable core to reinforce the neck. Speaking of the neck, this instrument features the most odd-feeling neck. It’s very thin but has a deep shoulder (if that makes any sense). Totally strange!
Another strange feature is the bridge, which offers very little adjustment because of the three large saddles, which sort of rock back and forth with the tremolo. It’s a shame because these pickups sound great! They’re very crisp and have plenty of zing, but unless you are a master at guitar set-ups, this would be a difficult player.
This could be why the LG-180T only appeared in the 1966 and 1967 catalogs. After that, it disappeared along with all the other Yamaha-made Guyatone electrics. By 1969, Guyatone had gone bankrupt for the first time, and thus ended guitar production for a few decades. At least we were blessed with some wacky guitar designs we can marvel at while remembering the days when you could play in the back end of an explosive 1973 AMC Gremlin while your mom raced around town. Two thumbs up for surviving our childhoods! PG
There's a lot of musical gold inside the scales.
Intermediate
Intermediate
• Develop a deeper improvisational vocabulary.
• Combine pentatonic scales to create new colors.
• Understand the beauty of diatonic harmony.Improvising over one chord for long stretches of time can be a musician's best friend or worst nightmare. With no harmonic variation, we are left to generate interest through our lines, phrasing, and creativity. When I started learning to improvise, a minor 7 chord and a Dorian mode were the only sounds that I wanted to hear at the time. I found it tremendously helpful to have the harmony stay in one spot while I mined for new ideas to play. Playing over a static chord was crucial in developing my sense of time and phrasing.
The following is the first improvisational device I ever came across. I want to say I got it from a Frank Gambale book. The idea is that there are three minor pentatonic scales "hiding" in any given major scale. If we're in the key of C (C–D–E–F–G–A–B) we can pluck out the D, E, and A minor pentatonic scales. If we frame them over a Dm7 chord, they give us different five-note combinations of the D Dorian mode. In short, we are building minor pentatonic scales off the 2, 3, and 6 of the C major scale.
Viewing this through the lens of D minor (a sibling of C major and the tonal center for this lesson), D minor pentatonic gives us the 1–b3–4–5–b7, E minor pentatonic gives us 2–4–5–6–1, and A minor pentatonic gives us 5–b7–1–2–4. This means you can use your favorite pentatonic licks in three different locations and there are three different sounds we can tap into from the same structure.
If you smashed all of them together, you would get the D Dorian scale (D–E–F–G–A–B–C) with notes in common between the D, E, and A minor pentatonic scales. Ex. 1 uses all three scales, so you can hear the different colors each one creates over the chord.
Ex. 1
Ex. 2 is how I improvise with them, usually weaving in and out using different positional shapes.
Ex. 2
The next idea is one I stole from a guitarist who often came into a music store I worked at. On the surface, it's very easy: Just take two triads (in our example it will be Dm and C) and ping-pong between them. The D minor triad (D–F–A) gives us 1–b3–5, which is very much rooted in the chord, and the C major triad (C–E–G) gives us the b7–9–4, which is much floatier. Also, if you smash these two triads together, you get 1–2–b3–4–5–b7, which is a minor pentatonic scale with an added 2 (or 9). Eric Johnson uses this sound all the time. Ex. 3 is the lick I stole years ago.
Ex. 3
Ex. 4 is how I would improvise with this concept. Many different fingerings work with these, so experiment until you find a layout that's comfortable for your own playing.
Ex. 4
If two triads work, why not seven? This next approach will take all the triads in the key of C (C–Dm–Em–F–G–Am–Bdim) and use them over a Dm7 chord (Ex. 5). Each triad highlights different three-note combinations from the Dorian scale, and all of them sound different. Triads are clear structures that sound strong to our ears, and they can generate nice linear interest when played over one chord. Once again, all of this is 100% inside the scale. Ex. 5 is how each triad sounds over the track, and Ex. 6 is my attempt to improvise with them.
Ex. 5
Ex. 6
If we could find all these possibilities with triads, it's logical to make the structure a little bigger and take a similar approach with 7 chords, or in this case, arpeggios. Naturally, all the diatonic chords will work, but I'll limit this next idea to just Dm7, Fmaj7, Am7, and Cmaj7. I love this approach because as you move further away from the Dm7 shape, each new structure takes out a chord tone and replaces it with an extension. I notice that I usually come up with different lines when I'm thinking about different chord shapes, and this approach is a decent way to facilitate that. Ex. 7 is a good way to get these under your fingers. Just ascend one shape, shift into the next shape on the highest string, then descend and shift to the next on the lowest string.
Ex. 7
Ex. 8 is my improvisation using all four shapes and sounds, but I lean pretty heavily on the Am7.
Ex. 8
This last concept has kept me busy on the fretboard for the last five years or so. Check it out: You can take any idea that works over Dm7 and move the other diatonic chords. The result is six variations of your original lick. In Ex. 9 I play a line that is 4–1–b3–5 over Dm7 and then walk it through the other chords in the key. These notes are still in the key of C, but it sounds drastically different from playing a scale.
Ex. 9
In Ex. 10, I try to think about the shapes from the previous example, but I break up the note order in a random but fun way. The ending line is random but felt good, so I left it in.
Ex. 10
While all these concepts have been presented over a minor chord, you can just as easily apply them to any chord quality, and they work just as well in harmonic or melodic minor. Rewarding sounds are available right inside the harmony, and I am still discovering new ideas through these concepts after many years.
Though the above ideas won't necessarily be appropriate for every style or situation, they will work in quite a few. Developing any approach to the point that it becomes a natural extension of your playing takes considerable work and patience, so just enjoy the process, experiment, and let your ear guide you to the sounds you like. Even over just one chord, there is always something new to find.