I currently just bought 2 jackhammer 12" that have 500 wat peak 250 wat rms for 60$ a piece on ebay. Shortly after i saw a deal for 2 of the 800 watt jackhammer 12's for 186% so roughly 66$ more. my amp that i have is a DAD9004 digital audio 500w at 4 Ohms and 750w at 2 Ohms. So my question is, would it be smart of me to return the 500W jackhammers pay a 15% restocking fee and the extra 60 bucks for some better subs that will run underpowered? will i get as loud of bass or better? also yes im willing to spend money on a better amp in the future.