Are you saying Onkyo DP X1 is not as good as a desktop DAC? How is this possible? Everybody knows desktop DAC are inferior to small battery powered, pocket DAC.
How do you feel about Onkyo DP X1 as a DAP, a portable player? You know, something X1 is, sonethsom it's designed for?
Comparing Onkyo DP X1 desktop DAC, say, Nagra HD DAC, to your shock and amazement Onkyo DAP may be inferior, but can you put a home desktop DAC in a pocket, (first connecting a source to Nagra, of course, because Nagra is just a DAC)?
Could it be that portable DAP, a pocket player is simply so bad, that you can't live with the sound?
There is nothing on the market that clearly, convincingly beats Onkyo DP X1, for any money, but you demands simply exceed what Onkyo is capable?