Finally i received my KPA-500 amp kit s/n 564,it took 10 days to arrive in Tn.The build when straight forward and it worked without any problems.I have powered it with 240 and 120 volts no differance in power out.The Brown truck must of gotten lost in the mountains.Good luck to all the KPA-500 owners,its a winner. 73s Norm kg9d K-3 #1204 KPA -500 #564