The most important piece in a stereo system???


I was wondering what people think is the single most important part of a stereo system? It can be the amp, speakers, CD payer, preamp, speaker wire, cables, tweeks, whatever you name it. I just want honest opinions. What would you spend the most money on? I think most of you will either say amp or speakers. I know having all good stuff will make your system sound better, but I just want to know the single most important part. Myself I think the speakers are the most important. I look forward to reading what you think. thanks in advance.
souljasmooth
The most important part of my system is my ears. We all hear differently thats why there are some many choices of equipment and without the ability to listen the equipment is just metal, plastice, wood and wires.