What is the difference between "Audio Out" and "Headphones" on MBP and rMBP models?

I noticed that the description of the audio jack on the 15'' MBP is "Audio Out" but it only states "Headphones" on the rMBP. Is there an actual difference is the hardware or what it supports?

1 Answer from the Community

  • There is indeed a difference between those ports. As you see at the MacBook Pro there are two audio ports: 1 in and 1 out. On the Retina MacBook Pro side these two ports are combined into one in and out port, which is also possible for handling optical audio.

    • Answered by Hon Fen C
    • Mar 8, 2014