I read on another post someone talking about a double RCA headunit, why would anyone need that? Also, for a system and you hook up the power chord to the battery, how do you do that?
How though, what i mean is, why would you need more than one? is it for each amplifier? Cuz i am going to have one amp running and 2 10'' Arsenals and a head unit, thats it, i would only need a head unit capable of 1 RCA correct?