so yesterday my friend and i installed my system. after we hook up everything and turned it on the sub was not working,but the components were working. so my friend pulled out the sub wire and it touch the amp while the amp was still on . it blew all the fuses including the inline fuse. i took it to the shop i bought my amp from and they replace all the fuses and the inline fuse blew right when he stick it in. they said my amp is fried. are the DA amp that sensitive? and how much is this going to cost to fix? thanks
