Originally Posted by Shareholder
All AC aircraft use the double jack system. I have found the single plug type on some US carriers, but not AC. The adaptors are not that easy to find these days, however, and some of them do not fit the A321 jacks in J as these are indented into the seat, and not flush.
If you happen to have DVD service, just take the adapter they give with the set. Consider it compensation.
1D