I have 2 10 inch subs that work good and they are loud. It comes with a two channel amp and all the wiring you need to hook it up. The amp is more then what I am asking for but one of the subs is cracked. I did buy it like that but It does not effect with the sound at all. It is a box that will fit under seats or behind in single cabs. If you have any questions text me at 785-766-3822