What is Realtek equalizer in Windows 10 and how to open and adjust its controls or troubleshoot its issues?
Check the answers in this post.
Realtek Equalizer Windows 10
What is Realtek equalizer?
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Realtek sound card features a graphic equalizer to let users freely adjust the computer sound.
Generally, you’re free to dive into the default Realtek equalizer from Sound configs.
Fix Realtek Equalizer Windows 10 Missing or Not Working
Fix 1.Open Realtek Audio Managerto access Realtek equalizer.

Then double-clickRtkNGUI64file to open Realtek HD Audio Manager.
Then it’s possible for you to clickEqualizerto choose a preferred equalizer setting for Realtek audio.
Here you could also clickChange to Graphic EQicon underEQto activate Realtek sound card equalizer in Windows 10.
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Update Realtek High Definition Audio driver.
PressWindows + Xand selectDevice Managerto open machine Manager in Windows 10.
ExpandSound, video and game controllers.
Right-clickRealtek High Definition Audioand clickUpdate driver.
Check how to download and update Dell audio drivers for Windows 10 PC or laptop in this post.
you could follow the steps to fix Enhancements tab missing issue.