Not really a "headphone" sighting, but rather an "audiophile/iem" sighting: Saw a guy with some black LEAR custom iems on the train. At least I thought I saw the "LEAR" logo. I'm not sure what model it was though... I'm not very familiar with LEAR IEMS. It's one of the rarer sightings as he was listening out from a DX50; most of the time I see people pairing expensive IEMS like the SE535 with their smartphones.
Omg yeah ✋ I see a guy using se535ltd out of his phone often while I'm in the LRT!
While they're still not getting the most of their IEMs from a phone I used to do it too when I wanted to save precious pocket space when I already had a wallet, keys, phone and more.
That all changed when I got the AK120 though which is much smaller than most of the other DAPs I've had.
Still, those people might not feel it's worth it for portable use to get a DAP