Hi,
Check if you have the Realtek Console installed; if your default driver is Realtek, you can adjust the equalization settings there.
Alternatively,
You can download FxSound:
https://apps.microsoft.com/detail/xp8jk4tbq03lz4?hl=en-US&gl=US
This allows you to equalize the sound driver directly.
Please consider rating the question (accepting the answer or not) and visiting the Microsoft Q&A community if you have further questions.
Thanks.