inputs.text: another great jl product - let begin saying jl amps simply awesome used jl exclusively since around 2000 3004v3 pretty much original 3004 not many changes called 3rd generation amp however said still powerhouse full range speakers mid range drivers clean output good enough even purest audiophile types biggest gripe serial number missing amp box came guess price known seller not licensed jl dealer means no warranty however original 3004 20045 still working fine never 1 issue may presume one outlast new truck anyway would reccomend amp anyone looking spectacular fullmid range amp aware get no warranty buying seller onlinecarstereo