A little update...from my side
Back in 2009 I wrote "We won’t get hi-res players unless we use pressure."
Well we used pressure, in various forms - and these players are now available.
I am using a Fiio X3 - to good benefit.
It plays native DSD. It does not sound quite as good as my rack size Tascam DA3000. But it is small enough to fit in my pocket.I can play high resolution recordings, with good (if not audiphile great) sound, not least, through ear plugs.
Looking back, I don’t complain.The hi-res audio player market is rapidly developing. You can follow it on headfi.com, dap section - portable source gear;
https://www.head-fi.org/forums/portable-source-gear.15/