I know this question has probably been asked, but I want to make sure I understand.
I have a 2012 no Nav, No Sony, with Sync. I want to install a sub and run the door speakers off the head unit (for now)
1. Is this the unit I need to run RCAs to my sub amp?
2. Will the sub volume (or bass output) be controlled by the radio volume? and the bass adjustment in stock stereo? or do I need a bass **** installed (in line the rca)?