my guy didnt have the rockford in hand as promised, he had a percision power amp 600 insted...i'm trying a bunch of differnt amps...was only $60 so what the hell...anyways since it was an older model i didnt know u didnt really have to bridge it, started smoking from the power end...LUCKLY after twisting around the wires it played...lol...almost fried it...but i wouldnt suggest, lol my subs just aint getting the power they desirve, i'mma try his hi-fonic's tomrrow its a 1200w and see the differnce....lol should be alot..