SMOOTH is a very interesting professional resonance suppressor for macOS and Windows with many usefull functions and a highly intuitive interface with a lot going on under the hood. It's M/S capabilities turned out to be very effective in precisely smoothing out harsh resonances from center-panned sources, a feature I was missing in many other resonance suppressors. Mid and side can be processed fully independent, which makes KERN-SMOOTH an ideal tool for mix & mastering purposes.
Response from kernaudioio from KERN audio on March 27th, 2026
thank you so much for the detailed review. the M/S processing was one of the things i spent the most time on during development, so hearing it's filling a gap for you is really satisfying. mastering use cases like that are exactly what i had in mind.
will keep on updating and improving, thanks mate.
Reviewed By fisherKing [all]
March 5th, 2026
Version reviewed: 1.0 on Mac
just added both 'smooth' and 'warm'(well-named plugins!) to my arsenal; both are excellent tools, great at what they do. my fave is smooth; it has a tasteful, informative GUI, and works well with resonances, the way something like soothe2 does.. but for a fraction of the cost.
it's a no-frills plugin, but that's kinda my preference. and it's stable (logic pro 12). both plugins are highly-recommended.
Response from kernaudioio from KERN audio on March 27th, 2026
really appreciate the kind words on both plugins. and glad SMOOTH holds up well next to soothe2 in your workflow. stable on Logic 12 is good to hear too, that's useful feedback mate.
Latest 2 reviews from a total of 2
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