OK has anyone done just a HU/amp upgrade???? All I see are people who have put RCA inputs in the factory amp, or put subs on the factory system, or changed out the factory speakers, or added a DVD/NAV, whatever whatever. But NO ONE that has just changed the freakin cd player and amp. Here is my problem, and please if there is any thread on this please point me in the right direction. I have a new reciever that I want to put in my car the problem is it requires an external amp to power it(i.e. it has NO INTERNAL AMP). Now will the factory amp power it? Or will I have to put a different amp on it? I have another amp so that isn't a problem. My beef with all of this is, I have heard of people on here complaining that when they have changed the factory amp they have not liked the sound of the factory speakers. I don't wanna have this installed, only to find out that the speakers sound like crap with the new equipment. The amp is only 30 Watts RMS per channel, 90 Watts RMS Bridged X2. PLEASE HELP!!!!!!!!!