Alpine CDA-9831R is a very good choice to increase the quality of your car audio. In my opinion it looks quite good, and what even better is you can match the illumination to your car's dashboard lighting through a range of 512 colors. But what i like the most isn't the looks, but more to its features. The 3-Position HP/LP Digital Crossover and 4-band parametric EQ features is very useful for upgrading the quality of your car audio. Those features can make your car audio producing more focus and better sound quality. What even better is the 4-Channel Digital Time Correction feature can make the sound produced by your car audio feels like coming from the center of your car's windshields. So it feels like you're watching a live concert. Overall i think Alpine CDA-9831R is very good in producing a good sound quality in your car. But i suggest you also use aftermarket speakers, subwoofer and amplifier also get help from a good car audio installer so u can draw this Alpine CDA-9831R's potential to the max.