Oxford SuprEsser DS: Linear Phase De-Esser by Sonnox

The SuprEsser DS focuses on the 1kHz to 20kHz range, where aggressive frequencies tend to appear. Three listen modes let you hear the material as you work, and the FFT display shows where energy is concentrated.

The developer describes the filters as transparent and accurate. Once you have located the offending frequency, a single control dials it out.

A simple mode covers quick corrections, while the advanced mode adds controls for finer tuning when a problem needs more attention.

Auto Level Tracking follows the energy of the input and applies the same relative gain reduction as the signal level changes. This suits a vocal that is quieter in the verses than in the chorus, since the reduction scales with the level instead of staying fixed.

A wet/dry control supports parallel processing, so you can blend the processed signal with the original for a more subtle result.

The linear phase design and a latency of 1.9ms at 48kHz make it practical for tracking and mixing sessions where timing matters.