ok thanks. a lot again. im going to pick up the first one, the 10a, so if i ever need to use it i can pull it down and use it as a 12v source for testing stuff. thanks again man. and i know it might sound crazy but what if i put a small cap also, would that help with the possibility of a future amp? i figure if its charged then the power will be pulled from that, i couldnt play it very loud for a long time or anything but just to add that little xtra. its just i also have an old 10 in sony xplode sub that id like to get out of my tool box lol