I got mine. I bought this from ownta.com. I had no problem with them.

I think SQ of the player is very good. I use this with JH13. T51 sounded solid and well defined for DAP. The sound character is a slightly in warm side. Bass attack is impactfull.
T51 beats out my iPhone and iPod, however I have not directory compared to other DAPs. HM801 is much better than T51 , HM801 is in another league.
The default setting of the player is 3D-EQ(playFX) enabled, but I think the 3D EQ setting should be turn off for music play back.

I think T51 is a good candidate for iMod replacement since line-out quality is even better.
I made a quick comparison using same cable (ALO Cryo SXC) for iMod5.5G + LOD/SXC + RSA P-51 versus T51 + mini-mini/SXC + RSA P-51. T51 is somewhat better regarding definition and details. I need to look into more about this.
This is an early impression, anyway..