Likes_The_Scotch t1_j6ix7lt wrote on January 30, 2023 at 5:40 PM

Reply to comment by pseudopad in eli5: Why do most airlines still use 2-pin audio jacks for the in-flight entertainment systems on their planes? by JJGLC92

If you fly in premium classes, they offer better headphones, those have the two-pin jack. I stole one once, I thought I could covert it to a single-pin set up, I couldn't.

Mackie_Macheath t1_j6jmv09 wrote on January 30, 2023 at 8:19 PM

You actually can but you have to be pretty good at soldering.

KeythKatz t1_j6lczdk wrote on January 31, 2023 at 3:26 AM

Some are even 3-pin, where I believe the third pin is for power delivery for active noise cancellation. Then there's a level on top of that with metallic contacts between the pins, no idea what those are used for.