Recently, I had the good fortune to fly on the A350.  Turns out the larger of the sockets is a standard 3.5mm and the smaller is for 2.5mm. Using the 3.5mm socket alone for my own headphones was fine, albeit with a faint hiss.

Thanks for the review - I’m looking forward to checking out the new seats.   A question though on the headphone plug.  I’ve always brought my own noise-cancelling headphones and have a 2pin 3.5mm adaptor, which I’ve happily used on other CX flights.  Are the 2pin...