I have been looking at this for quite sometime. They didn't really demo it at their booth in the HK show but I finally get to listen to this at 2 rooms during RMAF 2013.
It sounded great, in fact, better than what I had anticipated.
I researched the dealers in Hong Kong, after all, this is a Hong Kong product and made my purchase on Sunday.
I spend 2 nights setting up Minimserver which Lumin had recommended. The difficulty is you have to do this at the NAS end. This is one of the time, you are glad you got Synology and QNAP NAS with you because you need compatibility with Embedded Java and the Minimserver package.
Power it up last night and instantly, I got my entire library minus the DSD ISOs up online at my iPad.

These are the advantages of the Lumin:-
(1) Audio media player and DAC, all build as one unit. All you need is a NAS.
(2) Volume Control included.
(3) No Mac, PC required.
(4) No USB cable required.
(5) Analog XLR and RCA output.
(6) Audio HDMI output is available.
(7) Solid milled out cavities case construction.
(_8) Totally linear power supply. No PC CPU multiple voltage requirements.
(9) No need for battery 5V isolation, no need to worry about battery operation.
(10) Just the NAS, the Lumin, headphone amp and the headphone is what you need for a very high resolution music playback system.
(11) DSD capable but up 2.8MHz only.
(12) PCM to DSD upsampling (Very important feature)
Here are the con of the Lumin,
(1) No USB output to your favorite DAC. There is however a digital SPDIF provided.
(2) No AES digital output.
(3) No traditional remote control. Need iPad or iPhone to select songs.

This was reviewed last night using :-
Synology DS-1812+ NAS with Java 6 and MinimServer 0.72 (x86 version) (This is an Intel Atom NAS)
Lumin Player
Bryston Headphone Amp BHA-1
Sennheiser HD800 headphones.
The sound is neutral and very untube-like. It is very dynamic, very good with percussion instrument. Good representation with the vocals with all the instruments all properly and spaced out with pin point accuracy. Very dark, you can "see spaces" in between where are are no instrument or sound across the wide sound stage. Again, very detailed, I can find things I never heard on familiar recording...like a faint moan, a tiny triangle tingling in the background, some sub synthesizer tone that I never knew existed.

As expected, playback on DSD yields very good results. When compared to all the native RBCD 44.1K track, the RBCD tracks sounded a little "brighter" with bite. This is where the "PCM to DSD upsampling" comes in and it transformed these tracks into really nice sounding tracks once you convert it to DSD output. This is a very good feature. Yes, it display chinese very well too.

For the next few nights, I would need to extract all the DSF tracks from my SACD ISOs and connect this to the main system......

This is a good one-box solution (well, not exactly one box because you need a NAS) to go into computer music playback. Highly recommended.
(Audio)