see this is why i as suprised u switched to them and don't understand why youdu keeps talking about what a deal they are because it's just a china amp.. when i suggested a new sq amp to a guy youdufus said it's still china right i said "isn't everything these days" idk why peeps think zapco would be any better.. i understand u think that maybe they were designed in usa but that's also what hifonics and autotek say on the amps "designed in usa" so that don't mean as much as some peeps think.. i woulda got sq or similar amps instead., couple peeps here got lower end zaps said they good but then sold them within few months. just saying..