What is the best way to fix a malfunctioning audio system in an Audi?

I have been having issues with the audio system in my Audi. Even after trying different solutions like restarting the system and checking the wiring connections, the sound quality is still poor. What can I do to fix this?

First, try resetting the system by disconnecting the battery for a few minutes. If that doesn't work, you may need to replace the speakers or the entire audio system.