We have this adapter uses to view the flights of a US travel individual headphones can take the cheap headphones airline. We have still a headphone of the airline taken on the way because in my seat the socket was broken and we could share so. These in-ear headphones had a cruel sound and always somewhere a loose connection you had to constantly shake the cable to hear sound. On the return flight, we then used both our own headphones and the sound quality was worlds better although it was cheap headset from Lidl.
What I really liked in this model is flexible so that the jacks do not have to be exactly on the grid. In addition, one has then no clunky plug but two single thin.
Sound quality was great and also no loose contacts or the like. With 5 pieces I have now had enough for the next flights and spare in case one should break.
Price / Performance I find appropriate one gets at least 5 adapters including shipping.
