I'm posting this for my wife. She has an iPhone 3GS, and she says when she plays audio files, the left and right stereo channels are not in sync. She has heard this with the earbuds, and also plugged ...

Channel-based audio records the sound sources in separate pathways, the most common being stereo (left and right) and the home theater 5.1 layout (left, right, center, surround and subwoofer). For ...