I noticed this on my old cMBP. If I turn the speakers all the way up and play the "Funk" system alert, the speakers kind of crackle a bit. Is this normal? The Funk distorted on the two highest sound volume increments on the keyboard controls. The 3rd highest sounds perfect. I have a rev2 LG panel and everything on this unit is perfect. Zero image retention, its just great. But I'm probably being a little picky with the audio. It sure does sound richer and more vibrant than my old machine.