So after some long waiting I finally received my Ibasso DX100.
Its the first DAP from Ibasso, and I think it has done  a very good one.
I will not review the SQ of the DX100, not until I get it burned for some  time, for now I will talk about the UI .
Its an android gingerbread in its simplest form. The Screen is, well lets say its adequate, but not build for video, reading your emails or surfing, as it made my eyes soar after couple of minutes (as coming from the Galaxy Note with is SAMOLED and the Sony Z).
It has a good, no, brilliant music player, sound wise. But it has many, many bugs and one of the main it hangs/stalls a lot. Where as the Poweramp player behaves completely the opposite. It is fast detects all the ID-tags correctly (which the stock player doesn't and even doesn't show the Album covers) Album art covers are shown in Poweramp, names , titles all are correctly labeled, and it sounded excellent, so If you hate the lag and are frustrated with all the bugs of the main stock music player, you have the Poweramp option, but take note as the kernel of this version of android is limited to 16/44.1, whereas the DX100 player, bypass this limitation to play true 192/24, and what a sound. A Head-fi member (spkrs01) found a way to fix the Album covers for the stock player, but this is only a temp fix, and this and many bugs  or missing features should be addressed by Ibasso, as a DAP made mainly/solely for music should fix these basic bugs.
If you want a media player (a complete package as with a video player, photo viewer, browser.etc...the Sony Z or even the Cowon J3/Ipod is a much better option).
Sorry to tell you , but the DX100 is only a pure , magnificent music player, and that's all. The Sound by time is changing, opening...but this is for later.
Ibasso should release a manual (at least a downloadable version) for its stock player as for how to change the chines written menus, that can not be changed!
Many might face this problem with multiple language settings. First open the keyboard, then keep pressing the Chinese character button in the Left side of the keyboard until a menu pops , 2 options select input method and android keyboard settings, chose the select input method, you will have 2 options, a Chinese written option and the android keyboard, chose the android keyboard..voila. but for my language fonts are still showing the English fonts, although I changed it to the other language .
What is most irritating , as I have seen in the threads, as for me. why the +/- volume rocker stops working when the screen is locked???? Whats the use of this volume key? this is the first android that had this  strange bug, and when you change the volume the volume indicator that pops on the screen, freezes all other touch functions and you have to wait until it disappears..So you see it has lots and lots of bugs, but what makes up for all of this is the SQ, and what an SQ....Continued

The build quality is nice, sophisticated, feels like a light brick, but the screen is prone to smudges, lots!!!!
I never faced this with my Galaxy note.
The screen colors are nice but compared to Samsung's AMOLED, if feels dull.
The sound is detailed, clear and neutral, with a shy bass. I was able to hear sounds I never realized they were there with other DAPS, nice one SONY. It is best suited for live concerts and instrumental tracks (it Shines with them). But when amped with a good amp, the fun factor pops and you start appreciating what you were missing. All my reviews were done with atracplus 256 or atrac loss-less.
I can talk about it for hours, but lets keep it short and say it is one of the best sounding Walkmans SONY has made.
My only complain , is that I wished it had a memory expansion (SONY Listen to your faithful customers).
 

 
 
[size=10pt] Centrance LX Dacport is being put to test with my O2 amp, and let me tell you they were made for each other.[/size]
[size=10pt]Music never sounded so good. Natural sounds, beautiful and precise instrument separation, the most important thing is balance nothing overwhelms neither the Bass or the treble, but the mids are really what I enjoy, along with the soundstage, not big but it is there and what a stage! My advice to anyone thinking of getting his first DAC, is to make this one on the top of his list.[/size]
[size=10pt]The nice thing about both the amp and the Dacport LX is the size , where both can be carried in a pc/any bag easily and you can enjoy audiophile quality music anywhere & anytime. The sound you will be getting from these two is phenomenal in respect to their size, price ratio. Thank you Epiphany and thank you Centrance, you made me happy, and that's what is important.[/size]

 
 
[size=10pt]When I first read about this amp, I was skeptic about the sincerity of the  measurements at first, but I had to try it myself after his claims. After preordering, it came about  6 weeks later, and what an amp, I just now knew how wonderful this amp is, esp. with my Centrance LX Dacport, they were made for each other.[/size]
[size=10pt]Music never sounded so good. Natural sounds, beautiful and precise instrument separation, the most important thing is balance nothing overwhelms neither the Bass or the treble, but the mids are really what I enjoy, along with the soundstage, not big but it is there and what a stage! My advice to anyone thinking of getting his first amp, is to make this one on the top of his list.[/size]
[size=10pt]The nice thing about both the amp and the Dacport LX is the size , where both can be carried in a pc/any bag easily and you can enjoy audiophile quality music anywhere & anytime. The sound you will be getting from these two is phenomenal in respect to their size, price ratio. Thank you Epiphany and thank you Centrance, you made me happy, and that's what is important.[/size]

Very nice player, it is my second favorite DAP.
But will be my best player if I update it with RockBox, and that's if we have a stable version!!!

If you want a DAP for the best sound quality and value look nowhere. 

Thank you Jude for your review , as soon as I watched your comparison between the Sennheiser Adidas HD 25 and Beyerdynamic 1350, I decided to get them both. and really they complement each other.
what are you doing wasting time reading the review,go run, now, and get it.

I got the Beyerdynamic Tesla DT 1350  because of Jude's review, and I thank him for that, the sound is fantastic the portability factor is very welcomed, I love this headphone it sounds great and easy to handle.
I wished the metal piece that moves the cups up and down would stay in its position esp. the right one .

My favorite portable Amp from my collection, Everything works as has been reviewed and confirmed.
My only complain is for the gain switch which broke easily during my first use!
Well you can't have it all.
Sound wise it rocks and deserves your consideration