was running a memphis got a good deal on it sold it..running the kicker 2500.1 again, working out a deal on a BNIB AB500.1 which will rape those 18's lol cant wait..as far as power etc..running 4 cheapo batts..all ran with 1/0 welding cable, stock alt..lol..this build was only supposed to be temp to tie me over into my next big one which is consisting of 4 18's