This repo contains a preset for the linux application "PulseEffects" that you can import.
Copy the Enhanced.json
file to ~/.config/PulseEffects/output
folder or just open the app, click on presets and use the import button.
It will make your laptop sound way better. It is optimized for the Lenovo Thinkpad x390 but with some tweaks can be tuned for other laptops as well.