I use this almost exclusively on YT video, and it works amazingly. I listen to a lot of music on YT video (versus it's actual music service due to a 1.25 speed preference potential autism) and I love this extension on Firefox, while wearing full noise-cancelling headphones.

Click your puzzle piece, open the mixer, and try all of the audio presets on your favorite banger. Strangely, the 'Ska' preset seems the fullest, but I love toggling the 'Live' and 'Club' settings.
There is a lot to play with, and the differences in audio are so stark. Try 'Classical' on the most un-classical song ever, or try "Live' on Daft Punk. It's fun, new, and free, you free-loading complainer.

Of course you can tweak it further with the sliders, I am not well versed in the audio tech, but for a lite add-on, I couldn't be happier.