Realtek Digital Output

Whether is "better" than the standard Speaker (analog) output depends entirely on the hardware you are connecting to your computer.

What is Realtek Digital Output?

при подключении Realtek нет звука - Microsoft Q&A

Windows Update often installs a generic "High Definition Audio Device" driver or an outdated Realtek driver from 2015. These lack advanced S/PDIF controls.

Ground Loop Isolation

: If your external hardware supports it, you can often set the output to higher sample rates (e.g., 24-bit/192kHz) within the Sound Control Panel When It Is Not Better Standard Speakers/Headphones

Follow these tweaks to transform your digital output from "thin" to "transparent."