I thought I had a good setup until the person who installed my speakers had told me that my amp was barely kicking my subs to its full potential. The beats are nice but ever since he told me about how im not using my subs to its fullest, I've been paranoid and wondering if it could knock a whole lot harder then what I'm hearing now. Should I upgrade my amp? If so what kind of amp would you recommend? Im on a $200-250 budget.