Thread: System question

I've installed some systems in friends cars. But now that I'm doing mine. I cannot afford a new head unit. I am picking up my 2008 grand prix Saturday and want to start my system right away. My question is, do I need to buy a head unit for the system? It's a duel system. 2 12 in subs with an amp. Is there a way to make it sound great without buying a new head unit?
thanks!!!

Not that this is the end all be all of these types of devices, but it is one of the most well known:

JL Audio CL441dsp CleanSweep OEM Audio Interface