Originally Posted by crkstr

Unfortunately, the last Lexus I had, a 2005 ES 330, had the Mark Levinson sound system. It made the premium sound system on my new 2007 sound pretty poor in comparison.

I too have been thinking about how to upgrade the system, and wonder if a professionally installed new set of high-grade speakers and appropriate amp would improve the sound sufficiently to justify the cost. I am thinking that this could all be done without any changes to the head unit, which is the Nav version in my case.

The premium sound system just doesn't sound as rich and full as I would like in a car of this quality. If there were more UL versions available in my area I would have definitely purchased one for the Mark Levinson system.

I'm just not sure if upgrading the speakers and amp would accomplish what I'm trying to do. Again this would be done by a professional auto audio shop I have used in the past, not by me. Any thoughts?