[tobz1000]

If you listen to music all day, saving phone battery life is a pretty good reason. Plus a non-Android MP3 player can get 40-100 hours on a charge.

> all the mp3 players I've seen are made to be as cheap as possible.

There are plenty of high-end players which prioritise sound quality and provide a better output than phones. The NW-ZX700 in the featured article looks to be one of these. FiiO is another well-known higher-end brand: https://www.fiio.com/m17

[noxvilleza]

I wouldn't call FiiO high-end, they have a pretty wide range in most products (including DAPs) that goes from budget to relatively high-end ($1800). Astell & Kern start about one step down from FiiO's high-end, but can take you much higher (their ULTIMA SP3000 is ~$4300).