Light Harmonic premium amplifier and soundqubed subwoofer. $950 for both. Do not want to separate.. This amp is a direct replacement for the stock UHFS amplifier. There is one plug, just unhook the stock amp and plug the new one in. This is a class-d amp with 1200 RMS watts. My version of the amp was redone by LH to work with MCU2 cars. Earlier versions of the amp had issues with popping noises while powering up. This one worked flawlessly for the last six months. That said, I am not sure if it works with MCU1. I don’t see why it shouldn’t, but cannot verify at this time. Also included is a soundqubed HDS2.1 08" Dual 2 Ohm subwoofer. This a drop in replacement for the stock sub, has a 3D printed retained ring since the screw holes on the stock sub box don’t align with the new sub. Combined these bring louder, tighter bass to you model s (and likely model x).