How to troubleshoot issues with the sound system in an Audi A5?

I recently noticed that the sound quality in my Audi A5 has decreased. How can I troubleshoot and fix this issue?

Firstly, make sure that all of your audio settings are adjusted correctly. Check the balance and fade settings, as well as the equalizer. Sometimes, adjusting these can greatly improve the sound quality.

If the audio settings are fine, then it's possible that the issue lies with the speakers themselves. Inspect them for any damage or dust buildup. If necessary, you may need to replace them or clean them.

Another possible cause for decreased sound quality could be an issue with the audio system's wiring. Make sure that all connections are secure and not damaged. If needed, seek professional help for rewiring.