I just installed one and man is it worth the money! It was missing some wiring so I had to do some with some scotch locks but since it feeds the signal off the front two speakers it took barely anytime. For being only 150watts RMS it really hits quite good.

Now I got it for fairly cheap off ebay (totaled S331) but really I would pay that $400 that I've seen a few go for. I like that its plug and play and can easily be taken out if I ever need to put my seats up.

Put this ontop of my new Shaker 500 unit and its a world difference over crap *** stock!