So I just recently attempted hooking up my amp (Jensen Power 760) to my subs (2 12in alpine type S) and running all of it through my computer. I rigged a PSU to power the amp - however I don't think there is enough power to push the amp. I'm getting sound and power to the subs, but you wouldn't know they were running unless you looked at them - hardly loud at all. I was thinking about purchasing a 12v DC power supply off of eBay. Would any of these work?