Al ears said:
There is not a lot to say about what others think, read WHF review of the AK100 mark 2, even that has faults. I tested an AK120 with P7s and 1More e1001 in ear monitors.
The functionality of the Onkyo is much better with wifi ability and support for streaming sites but that's beside the point, I just thought it sounded better.
That's a personal thing I know
This is from Trusted Reviews. It's a personal thing but only the Onkyo got 5 stars from them.
''The sound quality of the DP-X1 is truly exceptional. Listening to Kimiko Douglass-Ishizaka’s 24-bit/96kHz recordings of Bach’s Goldberg Variations revealed that the Onkyo has the same impeccable timing and stop-start precision with notes as the Astell & Kern AK70, without being quite so overly bright. It’s a sound that’s totally unfatiguing''.
''If you’re looking for an entry to Hi-Res Audio on the go, the Onkyo DP-X1 should be at the top of your list''.
Verdict
Probably the best portable Hi-Res Audio player you can get right now – and the most versatile.