hello.. i'm about to order the new clarion vrx935vd with changer but i read about an optional Clarion DVC920 5.1 Audio Processor Controller for $90.00 what is this and is it needed for my set up , i'm adding to tv's to the headrest

 

5.1 is another word for home theatre. It basically adds this feature to your car but it never really works. Not worth it imo. Then again you can always say that you have it to get extra coolness points.

 

thanx for the info