So the best car audio place near me is an hour away. I went there today and said, “What would it take to improve my factory system, not trying for maximum loudness or maximum bass, just a very good quality sound”. I told them I’m not interested in waking the neighbors. The guy put a quote together and handed it to me. It was over $2600.00. I have the basic system I think with Alpine speakers in the doors. That’s about all I know about it. What other options do I have? The guy didn’t think just adding an amp would improve the quality, just add a little volume. Do I have alternatives? Thanks.