I use headphones, in the ear type to be more specific, as they fit with a motorcycle helmet and offer best audio quality. I had for many years used Etymotics brand and feel I can't really find better in terms of quality. Now, we already compromised allot by going digital, and that audio quality is entirely dependent on the sampling rate of recording, and phone's built in DAC converters, which like everything else is subject to cost cutting, by design. That's what made room for products like Firefly dragon converters. And now they take away the 3.5 mm jack! Aside from the nuisance of yet another battery to worry about charging and it dying in a year or so due to limited life, the quality and strength of audio will further suffer, due to further processing the signal before it gets to our ear. It's all really basically just a way to make money now by selling these as consumables.