I can't really tell much from the pictures. My 'amplifier' if that's what it is, is mounted above by three screws on the right hand side as viewed from the rear of the car into the trunk. I need to remove those screws and see what's in that box. The CD changer is a separate box and mine isn't even mounted, since I had to repair it and didn't go to all the trouble. It's better unmounted anyway, since that allows me to put large items in the trunk without having to manipulate too much.