honestly i am not real sure if i have a stock amp or not. I checked the trunk for one but did not come across it. This morning i went out to my car and took a closer listen to my front speakers and they have no bass coming from them. I think something might have blew inside the deck which is a Sony Xplode deck, or maybe if there is a stock amp it blew out. Does anyone think it may be wires gone bad? I find it wierd that the rear speakers do not work and the fronts have sound but no bass.