Getting a wide stereo sound in mixes or recordings is one of the most desired techniques in music production.
And as there are actual ways you can accomplish this using recording techniques like Blumlein or mid-side techniques, we often find that we need to apply stereo widening to already recorded tracks within our DAW.
One of the best ways to do this is with a dedicated software plugin. Quite likely, your DAW may have something within the lines of a stereo widener, and there are many good quality paid versions out there.
But we decided to take a look at some of the best free stereo widener VST and AU plugins available for download in this guide. Let’s check ’em out!
Best Free VST Plugins 1. Native Instruments. Native Instruments has done a remarkable job by releasing KOMPLETE START. It’s a complete audio-mixing bundle that contains a variety of VST plugins, virtual instruments, thousands of audio effects, and several other free resources for music production. Earlier all these elements were available. Stereo Enhancer is a simple VST effect plug-in for convertingmono to stereo signals as well as for stereo widening. This is possible due to the several techniques such as multi-band frequency splitting. If you’re looking for a free limiter that sounds like Wave’s L1 limiter W1 limiter is the perfect choice for you. W1 Limiter is available for free download in VST, AU, and RTAS plugin formats for both Windows and MAC (32 and 64-bit). Download: W1 Limiter.
Find more great gear here:
VST 4 FREE - Free Audio Plug-ins and Archives Free audio plugins archive - Instruments and effects for audio software. Plugins for Cubase, FL studio, Reaper, Ableton and other VST/AU platforms. Get NS1 by Waves and learn how to use the plugin with Ableton Live, Logic, GarageBand, and FL Studio for free. Stereo Tool is available in native versions, AU, RTAS and VST. No dongle or registration required.” Avid Down Mixer. Another more recent addition to the free Pro Tools collection is the Down Mixer, aimed more at those wanting to get surround mixes back to stereo but it is still able to take a stereo pair and make them mono.
Free Stereo Width Plugins
Here we go over some of the most effective free stereo widening plug-instructor available, all of which can do a great job of making individual tracks bigger and wider.
With simplified control and undeniably great sound, these free plug-ins are excellent alternatives to costly and impractical hardware solutions and esoteric studio techniques.
The List
Plugin Roundup
iZotope’s Ozone Imager is the free standalone plug-in version of the imaging technology found in the company’s own Ozone mastering suite. Although it has a much simpler set of controls than its more fully-featured counterpart, Ozone Imager is nevertheless capable of narrowing or widening the stereo image of your audio to a remarkably precise degree.
Like most of the components of Ozone, Imager provides immediate visual feedback that enables intuitive setting of the parameters. The plug-in even has a vectorscope and a correlation meter that aid in precision sound-staging during mixing and mastering.
Voxengo’s Stereo Touch employs mid/side coding in transforming the most basic mono sources into rich stereophonic tracks. Best suited to mono sources that don’t have a lot of sharp transients, it is especially effective for widening acoustic and electric guitars, synthesizer pads, and vocals. With the spacious and expansive “surround” produced by this plug-in, you no longer have to devote time and channel space to double tracking.
Stereo Touch also works on multi-channel input signals, processing each one independently as separate mono signals. The stereo streams are then combined to produce a single stereo signal at the output.
Whether you are looking for a quick way to add stereo imaging or you want to widen a mono source, Stereo Touch will deliver like a champ.
A1Audio’s A1StereoControl does exactly what it says on the tin: give you precise control over stereo imaging. Even though it is equipped only with a single knob, you can expand or limit your tracks’ stereo width to a remarkable degree.
One of the best things about A1StereoControl is how easily it helps you sidestep a common issue when “stereoizing” bass sounds. The plug-in has a “Safe Bass” algorithm that centers all the low frequencies below a user definable threshold. This keeps bass and other low-end sounds right at the center of the stereo spread, where they won’t cause any phasing issues.
Even without the dedicated mid/side controls found in other imaging plug-ins, A1StereoControl prevents your low end from causing any issues when collapsed to mono.
MeldaProduction’s MAutopan is more of a panning plug-in than a dedicated stereo imager, but it is quite a capable one at that. The plug-in employs a unique modulation system that consists of continuously adjustable oscillators. Each of these oscillators may combine predefined shapes, custom waveforms, and algorithmic post-processing.
The result is a tremendous degree of control by which you can define the stereo placement of your sounds.
MAutopan actually handles more than just mono and stereo sources. The plug-in is also capable of processing up to eight channels of surround audio, making it a useful tool for game and film audio production.
QuickQuak Audio’s UpStereo is a sort of classic in stereo imaging circles, with a set of simple controls that can make short work of stereoizing any mono source. It employs a fixed frequency EQ, a stereo widening unit, and a loud switch, all of which result in bigger, wider, and louder tracks.
Unlike most other stereo widening plug-ins, UpStereo comes with an option to push the sound into overdrive. Combined with the stereo widening capabilities of the unit, this makes it possible to produce individual sounds that stand out without the need for extensive processing.
Brainworx’s bx_solo is a free stereo imaging plug-in offered for free to everyone who signs up at Plugin Alliance. Employing the infinitely useful m/s processing technique, it gives you a surprising degree of control over the placement of sounds in the stereo spread.
A comprehensive range of solo features are included with the bx_solo, giving you the ability to hear the left, right, middle, and side channels while tweaking. This feature alone adds a lot of functionality to any DAW, very few of which allow for such flexibility.
Xfer Records’ Dimension Expander is a spatial expander modeled after the popular Boss/Roland Dimension D chorus effect. By splitting audio into four parts, flipping the phase of two streams and then delaying them, the plug-in produces rich, lush, and wide textures that retains punch and clarity.
Admittedly, the Dimension Expander is a bit of a one-trick pony. But the trick is a pretty damn impressive one.
And considering the relative rarity and cost of the Dimension D in the vintage market, this free plug-in will make a welcome addition to your suite of stereo imaging plug-ins.
Top Pick
The Ozone Imager is pretty much the one to beat in this roundup. Offering all the flexibility, control, and great sound that iZotope has become known for, it can handle most every stereo widening need you can think of and then some.
That being said, the Voxengo Stereo Touch, the A1StereoControl, and MAutopan all deserve special mention as well. Going well beyond the capabilities offered by most stereo imaging plug-ins, and or all of these three will find a welcome place in any mix engineer’s arsenal.
Article Content
It’s the end of the month, and your bank account is empty…
…again.
Oops.
And as much as you might feel like buying that new Waves plugin…
(You’ve had your eye on it for months, right?)
It’s probably not a good idea.
But if you’re still looking to expand your plugin library, don’t worry.
Sometimes, the best things in life are free…
Here are 7 of my favorite free plugins. Each of them offers something new and unique (no boring EQs or compressors). Download them all to extend your sonic palette and ultimately, craft better-sounding tracks.
And if you’re looking to dive deeper, I also put together a list of five plugins I use on every mix. If you’re wondering which plugins I recommend, download the list below to make sure you’ve got my top tools for the job.
1. iZotope Neutrino
Neutrino is the baby brother of Neutron—iZotope’s newest channel-strip plugin. While Neutron has a number of innovative features, Neutrino spins off the best of them.
Neutrino tames undesirable resonances caused by poor room acoustics, cheap gear, and heavy-handed processing. iZotope calls the effect “spectral shaping,” and it can sound similar to gentle, low-ratio multiband compression. This can make tracks sound smoother and more polished—like sanding the rough edges off a freshly cut piece of wood. I find Neutrino particularly useful on electric guitar tracks, which often have lots of harsh resonances.
2. Voxengo SPAN
People say “don’t mix with your eyes.”
Meh.
The truth?
Tools that provide visual feedback, when used properly, can help you make better mixing decisions.

A spectrum analyzer is one of these tools. It plots the frequencies of sounds out on a graph, which allows you to “see” what tracks are comprised of.
SPAN is my favorite spectrum analyzer. You can control the ballistics and response of its graph, which makes it flexible enough for a wide variety of tasks. You can even route multiple tracks into SPAN and compare their frequency content.
(P.S. Voxengo has a few other free VST plugins. They’re worth checking out too, but SPAN is my favorite.)
3. Brainworx bx_solo
Bx_solo is a no-frills, stereo-imaging plugin. While it’s the least sexy of this bunch, it can still be pretty useful.
I like to add bx_solo to my mix bus. While I rarely push the stereo width past 100%, collapsing it to zero is an easy way to check for mono compatibility. The mid and side solo buttons are also useful. It’s great to have this one around—you never know when you might need it!
4. HOFA 4U Project Time
Mixing is a race against time.
The more time you spend on a mix, the more attached you become to what it sounds like. This makes it progressively harder to make good mixing decisions. Given enough time, even the worst mix will start to sound decent.
This is one reason I recommend mixing quickly and impulsively. You’ll get to the finish line faster, retain more objectivity, and ultimately, craft better mixes.
The first step towards more efficient mixing is to track how much time you spend doing it. Without this information, it’s easy to get lost in a black hole of endless tweaking.
Project Time makes this easy. Add it to a track, and it will start counting. The timer automatically stops when you close the session, and starts when you open it up again.
Keep an eye on Project Time, and you’ll train yourself to mix faster and more efficiently. It’s also an invaluable tool if you bill by the hour!
5. MeldaProduction MFreeFXBundle
MeldaProduction makes some great plugins. They’ve earned the praise of many notable engineers, including mastering guru Ian Shepard.
The MFreeFXBundle contains 30 free VST plugins. They range from workhorse tools like a compressor and EQ, to less common effects like a ring modulator, flanger, and oscilloscope.
If you’re looking to fill some holes in your plugin library, this is a great place to start.
6. Flux BitterSweet
BitterSweet is among the best transient shapers out there. It can produce results on par with studio mainstays like SPL’s Transient Designer and Waves’ Trans-X.

This simple plugin can achieve a wide variety of effects. Turn the knob to the right to add punch to drums, enhance the pluck of an acoustic guitar, or boost the consonants in a vocal performance. Turn the knob to the left to soften tracks and push them back in the soundstage.
7. iZotope Vinyl
Sometimes a little crackle is a good thing.
Vinyl will make tracks sound like they’re being played on a turntable. You can vary the intensity of the effect by controlling the volume of different types of noise, the degree of wear and tear, and the decade your sound is from. The results range from subtle filtering to Edison phonograph.
This plugin is great for special effects, like filtering down a vocal or making an intro sound tiny.
Moving Beyond Free Plugins: My Favorite Plugins
I hope these 7 free plugins help you craft tracks that sound fresh and unique.
If you’re looking to dive deeper, I also put together a list of 5 plugins I use on every mix. If you’re wondering which plugins I recommend, download the list below to make sure you’ve got my top tools for the job.
Free Mono Vst
Before you go—what’s your favorite free VST plugin? Share your pick in the comment section below.
Bonus: 3 More Free Plugins for Mixing
3 Free Plugins I Use in Every Mix
It’s the end of the month, and your bank account is empty… …again. Oops. And as much as you might feel like buying that new Waves plugin… (You’ve had your eye on it for months, right?) It’s probably not a good idea. But if you're still looking to expand your plugin library, don't worry. Sometimes,
Free Mono Vst Plugin
FREE Masterclass: Low-End Mixing Secrets
Downloaded Over 19,455 times!
Mono To Stereo Vst Plugin Free
Discover how to make your kick and bass hit hard by cutting (NOT boosting) the right frequencies! Plus, more counterintuitive ways to get fuller yet controlled low-end in your mix. Download this 40-minute workshop by Matthew Weiss, now for FREE!