DX50 to my ears had technical ability no stronger than an iPod 5.5G, areas such as separation (which are noticeably weak) and soundstage narrow. What tricks people into thinking DX50 sounds good is it does have the single aspect of decent resolution "if" you pump the amp section hard (use high volumes), but what's the point if the musics smearing and losing coherency? I had to lift the volume quite high to get good detail extension my Rocco BA could do idling, This is why not long after release many members starting finding drastic improvements adding an amp to DX50, and so it came to be everyone started buying amps to use the player from line out.
Edited by H20Fidelity - 3/8/14 at 4:39pm
There's even a thread in the portable amps section seeking to find the 'perfect amp" which arose not long after DX50 release, almost every photo you see of DX50 in the pictures thread has an amp tied to it, very rarely do you see it used as a stand alone player. I know some members who sold their iBasso because they found the $100 Colorfly C3 superior, having owned C3 for over a year I know exactly why they did that. My DX50 was gone shortly after purchase for a few reasons, I would of been willing to live with the bugs and UI if the sound was good enough though it really wasn't. Yet after all this time my Colorfly C3 stays, I've never thought of selling it.
My opinion doesn't come from reading user experiences, it comes from hands on experiences, as you can see the list of sources on my profile.