Click the drop-down icon next to Setting to choose an audio equalizer option.
Click Enhancements tab and click Equalizer.Under Playback tab, right-click Speakers and select Properties.Right-click Sound icon at the bottom-right corner of Windows taskbar and select Sounds.Generally, you can access the default Realtek equalizer from Sound settings.
You can open Realtek equalizer in Windows 10 and adjust its settings if you like. Read More How to Open Windows 10 Realtek Equalizer