Yes there is a factory amp for non DSP system too. Like for DSP system the non DSP amp is normally located in the trunk on the left side under or near the CD changer. An easy way to know if you have DSP or not is to check if you have a sub woofer (with 2 x 6" sub speakers) on the right side of your trunk. You need to open the right cover to see the subwoofer. If there is no Sub then you have the non DSP.