Reduce problematic frequencies with ease using the AAX native Oxford SuprEsser from Sonnox. Whether you need to remove harshness from an electric guitar or remove sibilance from a vocal track, the Oxford SuprEsser is the solution. Operating between 20 Hz and 20 kHz, this plug-in goes deeper than your standard de-esser, letting you hear and see problematic frequencies across the full audio spectrum before dialing them out. Choose between Simple mode for quick fixes, or Advanced mode for increased functionality.