I've always used Apple Earpods to listen to music, Netflix, etc.
Now I bought the Bose Soundsport Bluetooth (well known for great sound) and I have to say that I can't hear the difference between Bose and Apple.
Suppose you have clarified all the other factors, how do you recognize a good sound?
What do I have to listen to?
Definitely binaural sound should be supported…
This means?
Stereo?
A good headphone can be recognized by the good sound.
You have to listen to auditions or read legitimate reviews.
Test report can be found on the Internet
But how do I know if a sound is good if all headphones sound the same?
If you do not hear the difference, you do not have a good sense of good sound.
Then you can also buy a cheap model, you do not hear it.
A good headphone usually sounds great, but also a headphone with a detachable cable, are quite ok.