It reminds me heavily of a slightly airier. more detailed Cowon P1, perfect match for something neutral or a slightly bit treble leaning, my CE6P loves this. No regrets selling the 300R in the slightest. There are some UI/Software issues definitely that hopefully can be ironed out soon.
A couple of things to keep in mind, far as I can tell the player only supports 2G Wifi networks and Mac compatibility is at the moment no go. Spotify is a bit buggy on this not sure why but it could use some work, especially irritating is the fact that it keeps thinking it is not connected while it is - browser works. It also has an annoying click if you change songs manually on Spotify. However I know that the player is built around internal storage and Tidal and I need to try it with that.
On the other hand I have been playing music 3 hours give or take. Battery drain ? I am at 94% from just around 99% when the player was turned on. No kidding and that is me streaming! Pioneer 300R? 4-5 hours on a full charge, P1 6 on a good day 3 1/2 on a bad, X7 6-9 depending on the weather... Who the heck cares about a great screen if you need to be chasing plugs?
I will write up some more impressions later on once I have had more time with it especially when I have had a chance to play with the built-in player.
Software niggles aside Echobox seem to have nailed the important bits - SQ, built quality, battery life.