We called Baby Audio’s Smooth Operator Pro plugin a “must-try” – it’s now just £59 at Plugin BoutiquePlugin Boutique is running a sale on a range of Baby Audio plugins, including the Pro version of its Smooth Operator spectral signal balancer.
The plugin, which is essentially a souped-up EQ-compressor hybrid, received a glowing review from MusicTech this summer following its April launch, in which we called it a “must-try” for mixing and mastering engineers. It’s one of 11 deals currently active on Baby Audio products via Plugin Boutique.
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Currently down from its list price of £99, you can now get your hands on Smooth Operator Pro for just £59. The original launched back in 2021, but this newer upgraded version introduced a complete overhaul of its features, with a vast number of improvements guided by user feedback.
According to Baby Audio, these changes were implemented without “compromising on the fast workflow that made Smooth Operator 1 so popular”. On the whole, the plugin is made to remove the bloated frequency energy your tracks don’t need by eliminating mud, harsh resonances, and masking.
It helps you to fix specific problem areas with “surgical control”, or you can re-shape the tonal balance of a mix entirely. Users can simply set their desired target curve, then turn the global threshold knob until the plugin starts balancing the audio, or experiment with a range of optional deep settings for further control.

A number of other Baby Audio gems included in Plugin Boutique’s sale are its Crystalline reverb, now just £29, and its Super VHS multi-effects tool, which taps into the lo-fi tones of old synths and tapes (this is down to £23).
If you’d like to go all-out on a feast of Baby Audio goodies, there’s also a Complete Bundle available for £219 with a saving of £100. Inside, you’ll get access to all of its award-winning plugins, including Humanoid, Transit 2, BA-1, Atoms, and plenty more – including Smooth Operator Pro.
To view the full range of Baby Audio deals, head over to Plugin Boutique.
The post We called Baby Audio’s Smooth Operator Pro plugin a “must-try” – it’s now just £59 at Plugin Boutique appeared first on MusicTech.