Rockford Fosgate PBR400X4D Punch Compact Chassis Amplifier

well good morning everyone and welcome to this episode of car audio live that's right today we have a special one we're gonna do a review are you excited Fernando what could we possibly be reviewing well if you've been following along like I know a lot of you have you have an idea of what product we're gonna talk about for the rest of you that don't stay tuned because here it comes [Music] so today we have a couple of rockford amplifiers we have the old one which is the PBR 300 x4 and we have the new one that is the PBR 400 x4d first we're gonna go over the differences between the old one and the new one and then we're gonna go ahead and put the new one in the labs so let's go ahead and get started first up is the unboxing let's go ahead and take both of the amplifiers out and see what comes in the box we'll start with the old one you get some paperwork basically this is an update that