LC500 - Mark Levinson

Currently shopping for an LC500 (if you're planning to sell a V8 Sport+ <£45k soon, do let me know...) but the ML option does seem to be missing on some of the cars. I've not had a chance to listen to either option, but is it worthwhile getting for someone who does enjoy decent audio?

Spec only shows 1 additional speaker (13 vs 12) but otherwise...assume it's just a better amp?