No mic input iMac

Hi, I have a late 2009 iMac and I can't find the mic input.

I heard that the new iMac don't have any mic inputs is this true.

If it is true this is absolutely ridiculous. Apple make garage band don't they.

And no I can't use the internal microphone, (I know thats what you were thinking). If I want to record high quality audio I can't use the internal microphone. I have a mixing desk that I need to plug the mic out into the mic in into the iMac.

Why is it so hard to put a mic in port on a computer that should be able to be used for recording audio.