hi there robin here and today we're going to talk about the pyramid ps9 kx it is a regulated power supply so a lot of people end up buying this type of product as an afterthought they've gone out and maybe bought a brick like this to run a project and then realize that they're not getting the performance or or consistency that they're looking for out of this i mean this is very reasonable these guys cost about twice as much if not more amperage-wise but more importantly is these bricks tend to be 12 volts or at least that's what we think of first when we're trying to buy one so why are we buying it a lot of times we have a head unit a radio something like that that was some accessory for your car whatever it is and you want to run it on ac so we go out and say i'm gonna buy one of these guys and you do that and the problem is is that it's lacking power it's lacking volume or sound out o