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Praise for our plugins
Mix with clarity
Smooth Operator Pro is a state-of-the-art spectral balancing tool that helps you easily remove harshness, mud and masking from any track. Work surgically to fix small imperfections – or work on the full frequency spectrum for fast corrections that sound like lifting a blanket from your speakers.
Instant track optimizer
We’ve engineered the new Pro version without compromising on the fast workflow that made Smooth Operator 1 so popular.
Set your desired target curve with the EQ nodes, then turn the big global threshold knob until the plugin starts rebalancing your audio. That's really all you need to do. Surgical tweaking is optional.
Smooth Operator Pro removes excessive frequency energy only when and where it occurs, making your tracks feel lighter and cleaner.
Resonance suppression 2.0
Where other spectral balancers offer global settings to affect the signal, Smooth Operator Pro lets you set individual configurations for each frequency node. Click 'Override Global' on a node for fine-tuning.
Examples (all within one plugin instance):
✱ Target the left side at 7500 hz to fix a harsh cymbal
✱ Address only the sides at 150 hz to clean up the bass
✱ Tame a vocal at 2.5 kHz with a softer compression profile
Presets by the world’s top engineers
Smooth Operator Pro ships with 184 presets created by some of the world’s most renowned engineers for use in their own sessions.
Preset creators include:
✱ Craig Bauer (Ed Sheeran, Pharrell Williams, Wu-Tang Clan)
✱ Max Jaeger (Major Lazer, Big Sean, Ariana Grande)
✱ Preston Reid (Chief Keef, Alicia Keys, Lil Uzi Vert)
+ Many more.
“Ummm.... holy F*CK. This thing is utterly ridiculous. The clarity it just brought to everything I put it on is mind blowing. Especially the Mix Bus where I don't often put these types of plugins.”
Craig Bauer
Grammy Award-Winning Mixer, Engineer, and Producer - Wu-Tang Clan, Lupe Fiasco, Ed Sheeran, Pharrell Williams
“Smooth Operator Pro is extra smooth - just like I like it! It’s an easy to use plugin to polish out the harsh!”
Ryan "Skinny" Shanahan
Grammy Award-Winning Mixer, Engineer, and Producer - Zedd, Lady Gaga, Katy Perry, Avicii
“Honestly the plugin is super good. Big pro: the solo function and EQ functionality are fantastic. I really like it and I was actually able to make it work well on a lot of different sound sources, while it being also fun and not too surgical.”
Max Jaeger
Grammy-Nominated Engineer, Mixer, and Producer - Major Lazer, Big Sean, Joji, Ariana Grande
“Smooth Operator is INSANE! the amount of time it saves from having to manually find the bad frequencies, especially in bad recordings, is a game changer! Its user friendly interface makes it so easy to use too. Definitely a staple plugin in my chain from here on, especially on vocals!”
ADP
Producer and Mixer - Dua Lipa, M.I.A., ALT-J
“Wow! Just installed it and I'm hooked. Congratulations on another awesome tool! Loooove the node override! I was able to hone in and tweak specific areas in the frequency without affecting the rest. Certain tracks do need such flexibility and it is such an awesome feature to have!”
Eryck Bry
Producer, Engineer, and Mixer - Lana Del Rey, John Legend, Calvin Harris
“Smooth Operator Pro is the surgeon of all surgeons. I've been using it on vocals, drums, music, you name it. This plug-in gives you so much control. It really allows you to address those unwanted resonances, while also giving you the ability to completely reshape any sound.”
Dacota G
Grammy Award-Winning Mixing and Mastering Engineer - Childish Gambino, Usher, Diplo
“The control I now have with this plugin is incredible. Put it on a 2-bus today and it really bridged the gap balance wise between my car, the studio, and even the crappy phone speaker. It became a container of unwanted frequencies in .5 seconds!! I’m a fan already.”
Cesar Sogbe
Grammy Award-Winning Engineer and Mixer - Prince, David Byrne, Jennifer Lopez
“I’d recommend Smooth Operator not just as a utility for smoothing, but as a creative tool. This thing can do just about anything but your taxes for you.”
Preston "Prizzie" Reid
Grammy Award-Winning Mixer and Producer - Chief Keef, 21 Savage, Alicia Keys, Lil Uzi Vert
Track spacing on steroids
Enable Sidechain mode to rebalance your current track based on the frequency profile of another track in your mix. Where the other track is dominant, Smooth Operator will attenuate, creating space for both.
Example: Load Smooth Operator Pro on a guitar track and use the vocal as your sidechain input to dynamically tame the guitar in the frequency areas dominated by the vocal. Or tame a bass when the kick hits by attenuating the most dominant frequencies in the kick drum, avoiding low-end clashes.
If it feels like magic, that's because it is
Smooth Operator's spectral processing manipulates each of the tiny particles that make up a signal individually – instead of the whole signal at once. By splitting a sound into its "DNA components", the plugin can rebalance harmonic material much more effectively than traditional EQ or compression tools.
Fixing problems is only the beginning: Use Smooth Operator Pro to dramatically reshape the tonal balance of your tracks without artifacts.
Explore the features
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More details
Tech specs
✱ Plugin formats: VST, VST3, AU, AAX (64-bit).
✱ Platforms supported: macOS 10.11 and up (including native Apple Silicon M-Chip Compatibility). PC Windows 10 and newer.
✱ DAWs supported: All major DAWs, including Ableton Live, Pro Tools, Logic Pro, FL Studio, Cubase, Studio One, Bitwig, Reaper, Reason, etc.
Shortcuts
✱ Add Node: Double-click anywhere on the spectrum
✱ Remove Node: Double-click on node
✱ Bypass Node: Ctrl+click node
✱ Change Node Width: Hover on node + move scrollwheel
✱ Instant/Click-Free Plugin Bypass: Click Baby Audio Logo
✱ Activation Screen: Click Smooth Operator Pro logo
Intended use cases
Below are a few of our favorite use cases.
✱ Bring clarity to any track
Most signals, whether individual tracks or full mixes, suffer from having too much frequency energy in certain areas. You may not notice fatiguing frequency buildup until you start trimming it away. When you do, you’ll hear your tracks become lighter and clearer. Smooth Operator Pro’s most effective use case is to make this job easy. Because the plugin works dynamically, it'll only target frequencies that surpass the set threshold – and only when they do. Use the plugin as an instant track cleaner by selecting an appropriate preset and moving the global threshold knob. Or go as deep and surgical as you need.
✱ Reduce harsh resonances
Harshness can creep up in any source signal when there’s lots of sonic information present. Notching it out band by band with an EQ can wreak havoc on the sound’s original character and introduce problems like phase shift. Smooth Operator Pro reduces harsh resonances and leaves the rest of your signal untouched.
✱ Low-end control
Smooth Operator Pro works equally well across the entire frequency spectrum. Low-end harmonics can often be a struggle to control, even with sophisticated tools like multi-band compression. When you’re dealing with conflicting kick samples or unruly bass that seems to change with every note, it may be a sign that harmonic resonance is building up in the wrong places. Use Smooth Operator Pro’s shelving filters to zoom in on your low end and carve out harmonic space.
✱ Sculpt the stereo field
Sometimes your source sound is just right, except for one pesky area in the left or right channel. Reducing problematic material between channels rarely works well with traditional tools. Smooth Operator Pro’s powerful imaging controls let you adjust harmonics independently of their location in the stereo field. With per-node L/R or M/S imaging options, Smooth Operator Pro can solve problems in complex stereo signals with ease.
Does Smooth Operator Pro use linear phase processing?
Yes. Smooth Operator Pro utilizes linear phase processing for the highest sound quality.
Are version 1 owners forced to upgrade?
No. Your Smooth Operator v1 license will remain valid and you can continue to download, activate and use Smooth Operator 1 without upgrading. Smooth Operator Pro runs on a separate license key so if you choose to upgrade you will just own licenses for both versions.
Get the free trial
Download a free trial of Smooth Operator Pro here.
Changelog
v1.2 - Released Oct 21, 2025:
✱ Studio One VST3 format only - all settings now correctly copy over when moving a plugin instance across tracks
✱ Bypass clickable area slightly expanded
v1.1 - Released Jun 23rd, 2025:
✱ Auto-Gain compensation feature added (click icon next to Gain control text to instantly match input level)
✱ Lo and Hi Preserve filters can now be adjusted from the frequency display window by clicking and dragging
✱ Visual emphasis added to nodes when Override Global is enabled
✱ Overwrite user preset bug fixed
✱ Various cosmetic and workflow improvements
Smooth Operator Pro
Spectral Signal Balancer
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