BECKHOFF CX1020 - Manual (Page 40)

Product overview
38 Embedded PC
Parameters for controlling certain frequency bands can be set under "Equalizer". Standard settings for certain types
of music (e.g. rock, pop, bass, ...) are also available.
Noise suppression for the microphone input can be selected in the "Microphone" tab.
Although the "S/PDIF In" and "S/PIF Out" tabs are available in the driver, they are currently not supported.