I am getting it from a friend who is ordering it off of ebay. So what do you have to do to get it to work without the brain? I am mainly wanting to watch DVDs and listen to music. He said that I wouldn't be able to hook a playstation or anything like that up to it unless I got a brain. I am also going to be hooking up atleast 1 amplifer. Maybe two. The one amp will be a sub amp and the other would be for my door speakers. Which means I would need front and rear outs and maybe a sub out.