I would have loved to test DP-X1 and have been in touch with Onkyo marketing team, but they refuse to send me review sample, especially knowing how many other DAPs I have tested and compared. There is nothing I can do if they feel insecure about their product...
I have to say, making a negative remark like 'There is nothing I can do if they feel insecure about their product' on a public forum just because they refused to send you a free product sample is quite unbecoming.
Nonetheless, I do hope you do get to review the unit. Would be nice to read some comparisons.