LEXUS GX 470 audio upgrade for Mark Levinson
 

Hi guys,
I know this topic is old. But, my Lexus GX 470 2004 Mark Levinson amplifier is recently blown, and it took down my entire audio system. I try to look for an aftermarket amplifier, and keep my car original NAV, speakers, and climate control. Do you have any recommendation for aftermarket amplifier plus an experienced audio shop in Southern California, or South Carolina that can take on this mods?
Thank you very much.