Hey folks, i have been having problem with my head unit (none bose). I have ordered a replacement Pioneer HU which has 3 Pre-Outs on it. Has anyone else wired up a new Hu in a b6 yet? I dont wanna replace the speakers right now, but belive that the rear speaker and sub are powered by an amp? im looking for someone who has replaced the headunit to give me some help. Please reply to this or PM me, thanks.