Soothe2 — Why use it? An example with Angelic Harp.
Low end "mud"? An example with Harp. https://oeksound.com/plugins/soothe2/ Maybe others refer to "mud" differently. But whatever you want to call low end resonances, Soothe2 was designed to pinpoint resonances and remove them surgically. This might be more effective and transparent than EQ in some cases, and might be preferable to multiband compression in others.
This video shows a couple examples with Angelic Harp from Orange Tree Samples where two notes in particular had some low end resonances (low hundreds of Hz) on a couple notes that could easily and quickly get reduced by Soothe2 presets for Acoustic Guitar.
A less expensive competitor is Baby Audio's Smooth Operator but I have not tried it.
This video was not sponsored. I bought the products with my own money.