How to adjust Bass and Treble in Windows 11?

thank you

Why not try an equalizer? There are several apparently. Equalizers are either graphic or parametric. Parametric are far better for fine tuning things. I don't think Microsoft supplied any tone control, rather it was the audio driver people were using that did. I use Realtek on an older motherboard and I had a fine graphic equalizer in Win7 but when I went to Win10....POOF....gone. Same driver, no equalizer. Go figure. Makes no sense.

So hunt down a quality equalizer everyone. Its WAY better than bass and treble controls. Realize that a stand alone software equalizer is not beholden to one specific audio device. Many people use more than 1 audio device: I use 3 or 4. You may have a great equalizer bundled with one device but that won't work for the other devices that use other drivers.

One could always use a hardware equalizer. There are probably some very cheap but functional ones out of China on Ebay. Locally you can find these for about $10 at garage and thrift sales. They're very hard to sell so people almost give them away. And they draw very little electricity.

Thank you for this!
The other instructions were not working.

Use an equalizer, either external or software based. There are browser extensions for this but you probably want something that controls all your sound output.