Okay. Let me break this down for everyone here. Let's focus on the sole points of audio quality and size (the only realistic points here).
For quality, it's a moot point. If you want to improve audio quality, make the port gold plated. That's what high end headphones do because gold pushes more data faster - it has better transmission of electricity.While a DAC will make it better, that is all about the components. Want to improve that? Build it into the audio output - the jack.
Headphones can put out audio proportionate to their size. Ear buds do not need to be amplified because they input sound straight into your ear. As for over ear headphones, they can be louder because they need to be. They also have higher audio quality because they are larger and therefore capable of doing so. If you want higher quality, get higher quality headphones.
Now, as for size... If you want that, invent a new standard that is literally smaller and provides good audio. Or make it usb-c or something. Chargers come with the phone and are typically made by the manufacturer. Cases have to be specialized anyway. Headphones, hell no, people want to use those on basically anything that can play music.
I had to save this from a site which I ended up unable to post to after writing *all of it* because of a stupid sign-up thing. Blah.
In unrelated news, what in the flying fuck happened to the editor for this. It looks like shit.
In other unrelated news, I think my chest is growing. Yaaaaay. Face is still growing crap though which sucks.
In yet other unrelated news, I'm finally working on music. Again. ...yeah, I know.
In yet other other unrelated news, I'm being laid off. So I need to look for a new job, possibly a music one (here's hoping) and otherwise try to get something better than now because I've already had nearly 2 years in entry-level positions and I really, really should get a move on.
In yet yet other other unrelated news... games. Games are fun. Particularly playing WoW again (private servers, thank you for being free) and maybe trying SS13 if I can find a server which isn't made of lag.