happy rider Posted March 16, 2010 Share Posted March 16, 2010 Hello fellow lexuers, I have a 04 ls430 base model with premium sound system and thing about to upgrade to Mark Levison system. I already got the audio head which set below the front central vent panel. Do I aslo need a seperate AMP and ML speakers in order to make the sound system work? Thanks ahead for the information Quote Link to comment Share on other sites More sharing options...
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