The previous section explained how you could experiment with different audio profiles. In the same window, you can select Equalizer and adjust the frequency bars to customize the audio output from your Windows 11 device. Generally, equalizers are created so that the slider bars on your left are for low-end frequencies or bass and the slider bars on your right are for high frequencies or treble.
Tweak the bars and observe the changes in audio. Once done, save the equalizer setting by entering a name. However, if you cannot figure out how the equalizer works, you can simply click on the drop-down menu next to Setting and select from the available options such as Pop, Live, Club, Rock, Treble, Bass, and more. These options adjust the equalizer accordingly, and hence, you do not have to worry about setting it manually.
Last but not least, check whether the audio drivers on your Windows 11 laptop or PC are up to date. To do so, press the Windows key + X and select Device Manager from the menu that appears. Click on Sound, Video, and Game Controllers and right-click on the concerned audio device to select Update Driver. After this, follow the instructions on the screen to install the latest audio drivers on your system. Updating the audio drivers regularly ensures optimal sound quality and makes certain your devices are compatible with one another.
Source: https://www.slashgear.com/944765/how-to-improve-sound-quality-on-windows-11/