What is considered to be the "top of the line" audio system right now that can be installed in a xB?

 

that's all personal preference. Some people will tell you Alpine, some will say one of the AVIC's, some will say Eclipse.

All of them do things that the others don't. All are very good choices. The bottom line is that you want to find somethign that fits *your* needs.

 

The most popular... are probably alpine, jl audio, eclipse, mb quart, kicker, and rockford fosgate. All are descent best speakers would probably be jl or mb quart (talkin most expensive) and headunits alpine and eclipse, and for subs all of the companies I listed their top subs are sweet.

 

actually, MB Quart speakers are not that great anymore. When the facotry in Germany burned down, they were forced to partner with Rockford. From what I understand, the quality has suffered greatly. A lot of high end places no longer carry them.

Top end speakers would be Focal, or possibly Rainbow. Rainbow are hard to find int he US though.