I would like to know if it is possible to add an amp to a factory head unit. I would like to upgrade to a amp and subwoofer but I don't want to replace the factory head unit, not until i get my eclipse dvd player and video screen. but thats a long time away and i don't want to buy one now and replace it later. if you know what i mean. Any help will be appreciated!

 

either get an amp with high level inputs, or get a line converter