.....I mention the cell phone not just because it's there in addition to this player, but more because outdoor use really masks detail, the kind of detail you're paying a bunch for. This player would make sense to me in a hotel or in a waiting room/office where the background noise level is comparable to being at home, but not so much outdoors or on public transport where the noise levels mask the hi-fi detail.
I never thought of that before but your right, with good sealed IEM's its less of an issue but thats something I hadn't considered before. Just the fact that while I'm walking or just out and about whatever takes the music to a different spot/focus in my mind while listening anyway.
You also wrote that..."It certainly seems more convenient than having an iPod etc. with an outboard DAC/amp that's connected by cable and strapped together. " which is another consideration for me. I used to have a HM-602 from Hifiman that I sorely miss (had to sell it to get some quick cash awhile back), and everytime I step out with my current rig/s all lashed together with a stylish rubber band I think about picking up another similar piece to the 602 and this one is a totally new one in my consciousness.
Has anybody heard this one? Know anything about the manufacturer etc......