I got my Retina MacBook Pro today from Fedex and all has been amazing. I just noticed a problem when I went to hook it into my desk with all my equipment. As soon as I plugged it into my speakers and it made sound there was a static/hiss that filled the channels. I figured it is electrical issues so I unplugged everything from it except for the audio, and it is continuing. One thing worth pointing out is I am using analog speakers (3.5" headphone jack). Also when noise stops for a while the line goes completely dead until something needs it again, but as soon as the audio is activated the hiss comes back. It is much less noticeable when I use my iPhone headset. But I still can just barely tell its there.