I honestly can't remember the variations by aircraft (although I'd bet some people here on FT will know!), but one other thing to note is that some of the D1 seats don't have a single-prong headphone jack. I think the A339s and A350s do, but it could be worth spending $5 on Amazon for a 1-to-2 headphone jack adapter to be sure you'll be able to use your own headphones.