The Realtek HD Audio Driver boasts of support for Dolby audio, Dolby's Digital Theater Systems (DTS), Surround Sound, six-channel Digital to Analog Converter (DAC), and others to boost your PC's audio performance up a notch. The sound issues with Windows 10 build 1903 have become more rampant than ever. On previous versions of the Windows OS ( Windows 7, Windows 8, and Windows 8.1), the Realtek HD Audio Manager works just fine.