This is a 12" Sony Explod subwoofer (1200 peak watts, 280 RMS) matched with an MTX 502 2 channel Amp(~300 RMS watts, don't remember for sure but it's the specs are on the amp. The sub is in the enclosure and the amp is mounted on the back of the box. This is ready for installation. I had it in my RSX and took it out before I sold it. It wouldn't fit in my new car and I don't want to keep it taking up space. It still works very well. This stuff was a whole lot more expensive when I bought it, but I'm looking for $120 for everything. All offers welcome.