Anyone with D120 could help me?

[Confused]

The Expert Pro also accepts DSD64 over ethernet, at least with the CI board installed. I didn't try it before my 130 got the CI board upgrade but it definitely accepts it with the CI board upgrade.

I must admit that I have never tried DSD via AIR Ethernet, so it is very interesting to read that it works.  I have got DSD to work via USB, and I have listened to a demo of DSD64 using the dCS Upsampler via AES/EBU, the latter sounded very good indeed.

I found this on Devialet’s website:

• Can I play DSD with Devialet Air?
  

DSD which stands for Direct Stream Digital is a specific format of digital tracks - More details here
To play DSD files, we recommand you to use the USB capability of your Expert product. In view of the size of content on a DSD format, Devialet Air won't be able to run a smooth transportation of all informations which is in a DSD. 

So that’s what the website says, but it looks from your experience that it does work.  Maybe network dependant?