Click the Properties button on the bottom-right. Click on the Enhancements tab. Check the Loudness Equalization option. Click the Apply button.

Where can I find loudness equalization?

Enable Loudness Equalization on Windows 10

Type in the words 'Control Panel' on the search pane of your taskbar and open it. Here, you will see a search bar on the top-right corner of the screen. Type the word 'Sound' there and press Enter. This will present you with your system's Sound settings.

Does Windows 10 have a built in EQ?

Windows 10 provides the sound equalizer, which enables you to adjust the sound effect and emulate the frequency when playing musics and videos.