Audeze EL-8 Titanium Lightning Headphones.. $800. New iPhone 7 rumored to be wireless (bluetooth only) for audio. Bluetooth, though they advance in technology, they still compromise in quality. There are alternatives using the Thunderbolt jack and get digital sound, which might be worth it depending on quality of headphones. Check this out.
And crazy awesome (I assume awesome from their reaction) Sennheisers, $50,000. Yes I did not mistype that dollar figure..
Sennheiser Orpheus… comes with amplifiers.
Here is another digital headphones using thunderbolt
Bluetooth option… Or get the beats