Audiophiles have long looked down on digital music because the sound quality was notably inferior for golden-eared listeners with distinguishing tastes. The development of lossless file formats (such as FLAC) and cheap ample multi-gigabyte storage have made portable high-fidelity music a reality.
At this point, there are really only two major players in the high-end portable music space: Astell & Kern and Sony (where the Walkman brand still lives on). We’ve used earlier versions of each brand, but not the current models.
If you’re the sort of person who has hard drives full of uncompressed music audio files — and can hear the difference between that and comparatively low-resolution MP3 and AAC files — then, by all means, pair up one of those players with your wired headphones of choice.
Nearly all of the streaming music services now offer lossless or high bit-rate options; that’s nearly all the big players, from Tidal and Qobuz to Amazon and Apple. (Spotify HiFi, weirdly, remains a no-show.)
If you like what you hear, consider upgrading to a decent headphone DAC (that’s “digital to analog converter”) like the Audiofly Dragonfly and a serious pair of wired headphones. Then you’ll have a solid audiophile option that’s good for the road, without the need for a standalone music player.