SplitEQ | Transient / Tonal Equalizer VST Plugin | Eventide Audio

More than a Great-Sounding EQ

SplitEQ™ is a groundbreaking EQ that offers a fundamentally new approach to corrective and creative audio equalization. It excels at Repairing, Rebalancing, Enhancing, and Widening any musical source or audio signal. SplitEQ is both a surgical tool for fixing particularly nasty problems and a creative tool as it opens up exciting new musical possibilities. More than just an EQ — It’s a new and better tool.

Own Physion?

We’re happy to offer Physion owners discounted crossgrade pricing on SplitEQ.

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Now it’s in every new mix.
SplitEQ has shown me a new brilliant
way to shape sounds beyond the common equalization assumptions.
Antonio Escobar
Educator, Producer, Composer
(John Legend, Zara Larsson)
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SplitEQ is a radical new tool.
I’ve been using it to transparently correct
problems or creatively warp tones. Eventide
have taken equalization to an atomic level.
John O’Mahony
Producer, Mixer
(Coldplay, Vance Joy, Sara Bareilles)
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Not just another plug-in.
It’s a new approach to equalization.
SplitEQ is a step forward in surgical precision
with a ton of artistic potential as well.
Paul “Willie Green” Womack
Engineer, Producer
(Wiz Khalifa, The Alchemist, The Roots)
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EQ becomes truly dynamic.
SplitEQ allows endless possibilities
to the shaping of any audio signal.
I wouldn’t work without it.
Jack Joseph Puig
Engineer, Producer
(Green Day, Lady Gaga, John Mayer)
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I love what it does on vocals.
Both in terms of giving them air and
openness, but it’s easy to reduce harshness
or sibilants as well. Really well thought out.
Joe Chiccarelli
Engineer, Producer
(U2, Beck, The Killers)
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I am using it 5-6 times a mix.
Eventide has had many game-changers since
the 910 Harmonizer®. SplitEQ is truly following
in the same path. Just go buy it!
Dave Pensado
Mixer, Engineer
(Michael Jackson, Mariah Carey, Beyoncé)
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SplitEQ is the ultimate problem solver!
I’m able to rescue just about any problematic
recording. I wish I could go back and use this
on every mix I’ve ever done!
Erin Tonkon
Musician, Producer, Mixer, Engineer
(David Bowie, Richard Hell, Esperanza Spalding)
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SplitEQ has unique abilities
that nothing else does.
A new tool that has enabled me to
very quickly adjust Transient/Tonal
elements in a sound.
Roy Hendrickson
Recording Engineer, Mixer, Producer
(Empire of the Sun, Miles Davis, Paul McCartney)
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This EQ is awesome.
To change the attack and or the sustain on sounds, instruments and whole mixes makes this an invaluable tool for any audio professional.
Rod O’Brien
Engineer, Sound Designer
(Grace & Frankie, Eastbound & Down)
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Why did we have to wait so long?
From fixing unwanted artifacts to fabricating wholly new sounds, the ability to process Transients one way and Tonal elements another way is a mind-blowing game-changer.
Alex Case
FX Author, Educator, Explorer
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A revolutionary product.
I absolutely love it. Being able to manipulate
the Transient and Tonal elements of my various
percussion instruments is empowering.
Germaine Franco
Composer, Producer, Songwriter
(Encanto, Dora and the Lost City of Gold, Tag, Little, Coco)
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Problem Solver/Magic Creator!
I really thought that there wasn’t anything
to improve when it comes to EQ’s, but SplitEQ
really gives us access to a new dimension.
Wytse Gerichhausen
Music Producer, Mix Engineer
(White Sea Studio)
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An innovative brilliant creation.
This tool combines what I love about Dynamic EQ, Transient Designers and high-end
Passive EQs seamlessly.
Sebastian Arocha Morton
Film Composer, Engineer
(Iron Man 2, Mr. Robot, Young Sheldon)
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My go-to for surgical EQing.
My favorite thing to do is reshape
drums and remove plosives, replacing a
multiband compressor for me.
Christopher “Czar” Smith
Film Composer, Engineer
(Czar, Faders Up Podcast)
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Precision of a surgeon.
In less than a minute, SplitEQ successfully tamed vocals in a mix, offering depth and clarity, yet letting them still roam free.
Robin Rimbaud
Composer, Producer, Experimental Artist
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Nothing like this exists yet.
It takes me at least three plug-ins to
achieve what SplitEQ is doing!
Ryland Blackinton
Guitarist, Producer
(Cobra Starship)
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It’s magical.
A tool that rethinks how we EQ and
shape sounds. An EQ that allows us to
change the tone of a sound across time,
rather than a static adjustment.
Joel Hamilton
Producer, Engineer
(Highly Suspect, Tom Waits, The Black Keys)
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Percussion secret weapon.
Whether I’m using it surgically or
creatively, SplitEQ’s signature is
incomparable to anything else.
Matt Lange
Producer, Composer, Sound Designer
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I love the way I can dissect vocals.
Cutting the Transients in the 3k area with the
Tonal still there, is an amazing way of getting rid
of what I hate while keeping what I love.
Matty Harris
Mixer, Mastering Engineer
(Kelly Clarkson, A$AP Rocky)
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A really great tool.
I loaded some old 8 tracks demos… and was able to instantly fix most of them just with one tool.
JC Concato
Creative Director
(Point Blank Music School)
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A game-changer.
One of the most original EQ design concepts
that I’ve seen in years. The amount of control
that SplitEQ provides is mind-blowing.
Charles Hoffman
(Black Ghost Audio)
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SplitEQ is really useful.
It’s absolutely brilliant, but even leaving all
of that under-the-hood cleverness aside,
it’s just an exceptional EQ.
Bill Wittman
Producer, Engineer
(Cyndi Lauper, Joan Osborne, The Outfield)
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SplitEQ lets me get surgical
in a way no other plug-in can.
It has been a lifesaver. I can both control and
enhance tracks in ways I never thought possible.
Daniel Rowland
Mastering/Atmos Engineer, Educator
(Nina Simone, John Wick, The Fast and the Furious)
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SplitEQ is the plug-in you never
knew you couldn’t live without.
Why take two plug-ins into the
studio when you can take one!
Drew Bang
Engineer, Producer
(U2, Royal Blood, Don Broco)
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We all can hear the tonal and transient parts of sound; shouldn’t our EQs?

Eventide SplitEQ VST Equalizer Plugin

By Musicians For Musicians

SplitEQ reduces the distance between what you want to do and how you actually do it, and with fewer tradeoffs than other EQs. On a normal EQ, a low-shelf boost on a kick drum will yield muddiness rather than delicious oomph. A low cut on a low male vocal removes plosives but at the expense of low-end richness. SplitEQ gives you the surgical control to address the problematic part of a sound without losing the magic and without the need for additional tools.

SplitEQ is not just a corrective tool, it is also a new type of creative tool for taking your mixes to new heights through its independent L/R and Mid/Side panning. With SplitEQ every source is split into a pair of sonically distinct elements offering your music, mixes, and audio signals an extraordinary new level of musicality. 

Structural Split

The beating heart of SplitEQ analyzes the incoming audio and separates it into two separate streams:

  • Transient (noise, pops, mic plosives, vocal sibilance, attacks)
  • Tonal (sustained notes, harmonics, tone, ambiance)

8-Band Parametric EQ

SplitEQ’s filters are state-of-the-art, precise, and musical. The User Interface has been designed to streamline workflow. Add sheen to vocals without boosting sibilance or harshness. Enhance acoustic guitar harmonics while reducing string buzz. 

Stereo Imaging

Continuous L/R or Mid/Side panning of the Transient and Tonal components for each of the eight bands. The plug-in can be used to spatialize mono sources.

Graphical Display

High-res, real-time, spectrum analysis of audio components with multiple options for monitoring or comparison. SplitEQ also features Peak and RMS metering. 

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SplitEQ is my new go-to.
First, it sounds great as an EQ. Then, there’s the Transient/Tonal revolution that’s blowing my mind. It’s the swiss army knife of equalizers.
Stewart Lerman
Producer, Recording Engineer
(Patti Smith, David Byrne, St. Vincent)
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SplitEQ is remarkable!
With SplitEQ, I can now sculpt a sound that is much closer to the one I have in my head.
Jacob Shea
(Planet Earth II, Through the Wormhole, Gears of War: Judgement)
Tim K
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Mix and sound design gold.
Whoa – an honest-to-goodness innovation
in EQ! This helps play with the Transient
and the rest separately.
Tim K
Composer, Producer, Keyboardist
(I am Michale, King Cobra)
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SplitEQ is out of this world!
You can really get crazy with bringing
out those Transients you need to
sustain an amazing mix.
Albert “Lamont Sincere” Brown
Producer, Mix Engineer
(Motown Records, Cam Wallace, Wiz Khalifa)
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I love SplitEQ!
Much like my favorite hot sauce,
I’m gonna use this sh*t on everything.
John Agnello
Engineer, Producer
(Dinosaur Jr., Kurt Vile, Sonic Youth)
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A new way of shaping sound.
This isn’t just an EQ… it helps create
textures around my tracks.
ill Factor
Producer, Educator
(Beat Academy)
DJ Zardonic
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I expect SplitEQ to be part of all
my future projects permanently.
Eventide managed to pull something revolutionary in the world of software plug-ins.
DJ Zardonic
DJ, Producer, Sound Designer
(Bullet For My Valentine, All Elite Wrestling, Superhot Team)
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Eventide crushes it again!
I haven’t scratched the surface of what this
can do, but it is clearly going to be my
new go-to equalizer.
Chris Allen
Mix Engineer
(Sear Sound, Yoko Ono, Paul Simon)
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It’s kind of groundbreaking isn’t it?
I’ve been using it on just about everything I find it particularly useful with guitar… just pulls out either body or clarity… Brilliant.
Saul Zonana
Musician, multi-instrumentalist, Producer, Engineer
(Adrien Belew, Ace Frehley, Crash Test Dummies)
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It’s easy to isolate transients.
I’ve been able to transform sounds by using the strongest fundamental energy to reveal hidden character and depth.
Dweezil Zappa
Guitarist, Composer
(Steve Vai, Winger, Frank Zappa)
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Definitely a game-changer.
I feel like it produces results that I’d ordinarily use analog outboard gear to accomplish, but in a different, very intuitive, way.
Blake Harden
Engineer, Mixer
(Kendrick Lamar, Katy Perry, SZA)
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SplitEQ opens the door to entirely new
mixing and processing possibilities.
We’ll be discovering new uses for this
plug-in for years to come.
Damian Taylor
Producer, Mixer
(Bjork, Arcade Fire, The Killers)
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Great update to my workflow.
I often have too many tracks and nothing lets me fit all the elements like SplitEQ. I was able to focus the messiest speed metal guitars in a second.
Lars Deutsch
Composer, Producer, Mix Engineer
(Amiena, Paloma Rush, Built to Last Music)
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This EQ is awesome.
Not only for mastering but also for
individual sounds… it is extremely quick
to get just what you want.
Steven Williams
Producer, Songwriter
(Sting, Britney Spears, Rolling Stones)
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The more I dive in, the more
I discover the power of this tool!
Fantastic for studio recording, game
audio, sound design, and field recording.
Dennis Bestafka
Game Sound Designer
(Horizon, God of War, Ratchet & Clank)
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An amazing sound design tool.
As well as a fantastic mix plug-in.
It’s truly a game-changer to combine EQ
and Transient design in such a flexible and
accurate implementation.
Ronit Kirchman
Composer, Songwriter Musician
(The Sinner, Evil Eye, Limetown)
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SplitEQ is badass!
I can now control Transient and Tonal material
like a surgeon. I see this living on my drum
bus and tons of other applications!
John Nathaniel
Producer, Songwriter, Mixer
(OneRepublic, Madison Beer, Gwen Stefani)
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A truly original approach.
It allows for example to work on aggressiveness
and brightness without damaging the
dynamics of the original sources.
Leon Rousseau
Audio Restoration
(Lobster Films, L.E. Diapason)
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The possibilities!!!!
Being able to EQ Transients separately from the
Tonal portion of the sounds, and effect them
separately opens up a whole new way of thinking.
Scott Gershin
Sound Designer, Mixer
(Night Crawler, Maya & the Three, Pacific Rim)
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It’s really fun to work with.
I feel like EQ’s need to be versatile in order to
maintain the creative energy when doing such
basic things and the SplitEQ definitely does that.
Kjartan Holm
(The Minister, Without Remorse, Sigur Rós)
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It’s been a life saver.
I’ve found it useful when I’m working with
old tapes, SplitEQ has become my go-to
for really bringing these recordings to life.
Michael Graves
Engineer, Audio Restoration, Preservation
(Blondie, Wilco, Nina Simone)
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SplitEQ just took the crown.
It’s the King of all EQs.
Pat Hundley
Grammy Award-Winning Producer, Mixer, Engineer
(Kanye West, Lil Wayne, Marilyn Manson)
Ocicat Ruan
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A new and better invention.
Not just an EQ, SplitEQ is as much a scalpel tool for solving tricky problems as it is a creative tool as it opens up exciting new musical possibilities.
Ocicat Ruan 阮祥博
Atmos Mixing/Mastering Engineer
(L+R SoundSystem Studio)
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SplitEQ Applications


With independent control of the Tonal and Transient elements of an instrument, SplitEQ can be used to deliver punch, detail, sheen, breathiness, diction, tightness, thump, and pluck.


A unique audio repair and restoration tool, SplitEQ allows you to surgically tune the Transient and Tonal response independently. Remove a kick drum’s boom without losing its thump. 


SplitEQ allows versatile track placement in a mix. Easily perform multiple tasks not possible with any other EQ, like softening electric guitar strums while boosting cab reverb. 


SplitEQ allows for precise multi-band stereo image manipulation of the Tonal and Transient elements of each frequency band. L/R and Mid/Side panning are supported. Spatialize a beat like never before. 

X-Ray Vision

With SplitEQ you can hear and even see your sound in new ways. Our Structural approach mimics the way in which we interpret sound and our spectrum display offers an inside look into what you’re hearing. Solo only the transients, or a single band, or only the transients on a single band. Use the real-time spectrum analyzer to track down problematic resonances or transients by displaying the tonal and transient streams separately. SplitEQ adds a new dimension to your trouble-shooting toolkit.

Prepared for Repair

Our team took all the knowledge they had about recording, threw it out the window, then headed down to the studio to lay down some badly recorded tracks. Double-headed kick drum with no port? Check. Ill-advised mic placement on snare? Check. Why? To prove that SplitEQ works well on a wide range of sonically challenged material. We’ve created an entire folder of presets for those less-than-perfect recordings.

Batteries Included

SplitEQ comes with a Factory Library of over 150 presets to solve many of today’s standard corrective and complex mixing problems in a cleaner and faster way. The presets are designed to Enhance, Repair, Rebalance, and Widen various instruments including drums, vocals, guitar, and more. A/B comparison and Undo/Redo make it easy to explore ideas without losing where you started. 

Whether you’re working on individual tracks, a full mix, or cleaning up a two-track loop, you’ll find SplitEQ to be an inspiring and powerful tool that allows you to approach material in a new, musically, and sonically meaningful way. 


  • World-class 8-band parametric EQ with pristine musical filters 
  • EQ Transient and Tonal parts of a sound separately using Eventide’s patented Structural Split™ technology
  • Control Transient and Tonal Output levels 
  • Enhance the stereo-field with continuous Transient and Tonal panning controls (L/R and Mid/Side modes)
  • Control the underlying Split technology for fine tuning and experimentation
  • Globally scale the EQ curves together or independently 
  • Peak, Notch, Bandpass, High Shelf, Low Shelf, Tilt Shelf, High Pass, and Low Pass filter types with slopes from 6 to 96 dB/octave
  • Innovative real-time spectrum analyzer displays the Transient and Tonal streams independently 
  • Comprehensive Presets Library includes 150+ presets
  • A/B buttons allow quick auditioning of two presets or settings plus Undo/ Redo functionality
  • Resizable GUI with zoom options
  • Three Color Schemes: Original, Dark and Colorblind Accessible


A groundbreaking solution.

SplitEQ introduces a revolutionary transient-based approach to EQ’ing. It’s going to fast become a staple tool in a mastering engineer’s toolbox. It’s a groundbreaking solution for adding punch, weight, and width to a mix.

SplitEQ is immensely versatile.

SplitEQ is immensely versatile, with a range of application as wide as any full-fledged modern parametric equalizer (as it can be used as such) but it reaches out much further with Structural Effects to deliver unprecedented results. Individual instruments, groups or busses can all benefit when mixing, and it’s an excellent option for designing unique sounds with samples or synthesizers.

Greater than you think.

SplitEQ offers the user separate control over the transient and sustain aspects of a signal, and the potential uses, both corrective and creative, are probably greater than you think.

An excellent high-end mastering tool.

To try to emulate what this plugin does in one instance you might need to employ a pretty high quality EQ and possibly a number of instances of a good transient designer. While it’s clearly an excellent high-end mastering tool, its range of presets and the inclusion of selectable algorithms for transient detection would suggest this is far from being a one trick pony.

An exciting progression.

All in all, SplitEQ is an exciting progression of Eventide’s Structural Split technology. It may not be as creative as Physion, but it’s arguably a lot more useful, and the preset folders called Enhance, Repair, Rebalance and Widen hint at its versatility. We can see this becoming an important utility for general mixing of individual tracks and fixing difficult problems, even at the mastering stage.

Beyond simple tonal sculpting.

SplitEQ undoubtedly gives you the ability to radically change the tonal character of sounds beyond simple tonal sculpting, and lets you sit sounds in a mix in a new, useful way.

…nothing could have prepared me for the SplitEQ.

This is truly a remarkable achievement in modern audio and I don’t care how they pulled it off, but I’m sure glad they did.

SplitEQ is a revelation, worth every penny.

SplitEQ is a revelation – easily amongst the most versatile and capable EQs out there, and worth every penny of its very reasonable asking price.

Effective and elegant.

SplitEQ has no real equivalent on the market and offers many ways to look at mixing problems in a new light…It’s truly a new tool that can provide effective and elegant answers to classic mixing problems.

You’ll wonder how you lived without it.

With its wide range of filter types and surgical capabilities, SplitEQ would be a desirable plugin even without the Spectral Split technology. When you factor in its ability to separate the transient from the tonal, you realize just how powerful and unique a plug-in it is. You’ll wonder how you lived without it.

Truly a step forward.

This Plugin is as powerful as it is revolutionary, and simple at the same time. Signal management at this level, with this interface, this ease, this constant management of all the work is truly a step forward.

An innovative product worthy of an insta-buy badge.

If you have several software EQs that, when combined, do what SplitEQ does in a single plugin, this one go-to utility EQ can replace them all. Eventide has created an innovative product worthy of an insta-buy badge.

Split open your wallet NOW!

SplitEQ is quite revolutionary. It truly does work in a way that no other plugin on the market currently does. The very fact that you are able to split and listen to transient and tonal information separately makes you see things in a new light. Cons? The price. But remember, it is a great all-in-one tool. For major sources like vocals, it can reduce the number of plugins you introduce in a chain. Split open your wallet NOW!

Where has this been all this time?

SplitEQ is an absolute game-changer, and has us wondering, “where has this been all this time?”

Very different and new. 

Very different and new. The plugin has some of the best features you can find in EQ plugins and works perfectly… You can smooth transients, remove de-ess, reduce snare ring with filters, and more.

Tonal balance and Transient shaping in one plugin.

SplitEQ acts as a 2-in-1 equalizer with a spectrum analyzer, so we get the double benefit. Before SplitEQ I was using separate plugins for transient shaping and tonal balance but this plugin allowed me to do all my EQs in one plugin.

SplitEQ wins the KEYS Product Award 2023

Voted as the number one processing plug-in of 2023 by readers of KEYS Magazin.

Platform Compatibility

Windows 8+
AAX 64-bit, VST2 64-bit, VST3 64-bit
macOS 10.9+, Intel and Apple Silicon
AAX 64-bit, AU 64-bit, VST2 64-bit, VST3 64-bit

An iLok account is required, but no physical dongle is necessary.
We test our desktop plug-ins in Ableton Live, Cubase, FL Studio, Logic Pro, Pro Tools, and Studio One.
Our plug-ins should work with any compatible host, however we recommend you download a 30-day demo to check before buying.
Patented Technology

The SplitEQ product is covered by United States Patent No. 10,430,154.

Further Reading

An Introduction to Structural Effects™
Background Since the dawn of recording, engineers and musicians have been manipulating sound using various mechanical and electrical means. Analog was the only show in town for the first 50 years of electrical-mechanical recording. Back then, all the gear …