I got one since a few weeks.
Its like a GB micro, slim and looks good.
Got a build in lithium batterie and 4 gig memory plus a mini SD slot that support SDHC. Im using micros SD cards with a mini SD adapter and works well.
The screen is really good the build in speakers are ok but using headphones is better.
The D pad is ok but doin moves like down, down forward, forward is very hard with it.
The movie playback is kinda awesome u dont need to resize your Movie files and a lot formats are supportet, divx, real player, flashmovies ect.
Music well its like a MP3 player showing most infos and some equiliser, one thing it does you can also sort the music after Group name or CD name. You also have different EQ modes.
The Radio works well without the headphones attached to the Dingoo. It also got different setup for different countrys.
Its also possible to record from radio.
If you like ebooks you you can also read em with music or radio running in the background.
For Emulation i must say so far i testet Neo-Geo, genesis, SNES, and CPS 1 & 2 games also one GBA game that was deliverd with the dingoo.
The Neo Geo emulation is good but not perfect. It has slowdowns and some games have grafic glitches but you can play 90% of the games well.
CPS 1 & 2 emulation is good near perfect. Some games have grafic glitches all time some have at different stages. You also have some slowdowns now and then. Some shooters are displayed from left to right so you need to turn your dingoo.
GBA Emulation seems good but only testet one game.
SNES emulation well its bad its to slow and same goes for Genesis emulation. If they release better emulators it would be better i think.
Some 3d Games also came with the dingoo i did try 7 days that worked fine.
Most emulators also have setup guis so you can change some settings, remap buttons and other stuff ( some offer realtimesave ).
There are also some homebrew emulators out yet for different systems. If u need help check www.dingoo-digital.com.
For me its really a nice thing to have. Listening to music watching movies or play some arcade games now and then is cool.
The TV out is a cool feature. What i like most is the fact it takes all movie files i tryed yet without need to resize them.
As for the gaming aspect its not that great yet but for music and movies its perfect.