I have two 12" kicker comps and a 1,000 watt Sony Xplod amp currently hooked up in my truck. It doesn't seem to beat as hard as I want it to. I was already planning on upgrading the amp. Since I am planning on doing that I think I am going to upgrade my subs as well. What kind of amp and subs should I get? I am probably going to end up selling the subs and amp. I am probably gonna end up having around $400.