I had this white noise problem on my very first day of setting up my D200. After a few emails with Devialet support who acknowledged the problem exists and they are working on it, I gave up on having high expectation to have AIR working perfectly. I just have to find other ways to make it a better system: via external streamer or using USB. Hopefully one day AIR issues will be solved.
Edit: Actually, the white noises occurred before I update to the latest firmware. After updated, this symptom never happens again. AIR however may still drop occasionally. AIR works poorly with 24/96 and 24/192 files. With standard 16/44.1 files, AIR performance is acceptable. I guess it may also due to my Windows 8.1 Tablet low resources (Atom 1.33GHz CPU & 2GB RAM only).
Edit: Actually, the white noises occurred before I update to the latest firmware. After updated, this symptom never happens again. AIR however may still drop occasionally. AIR works poorly with 24/96 and 24/192 files. With standard 16/44.1 files, AIR performance is acceptable. I guess it may also due to my Windows 8.1 Tablet low resources (Atom 1.33GHz CPU & 2GB RAM only).
Before: Le200, KEF LS50, AQ Type4, NUC 5i5RYH/8GB/128GB M.2SSD, Roon, Win8.1/AIR2.1.3/RoonBridge, MM/AIR3/RoonBridge, QNAP TS-212P 5TB NAS, AQ NRG-X3
Now: KEF LS50W, NUC5i5RYH/8GB/128GB M.2SSD, Roon, QNAP TS-212P 5TB NAS,iFi iSilencer3.0+DC iPurifier+iPurifier2, Sonos ZP80+SPDIF iPurifier
Location: Cyberjaya, Malaysia
Now: KEF LS50W, NUC5i5RYH/8GB/128GB M.2SSD, Roon, QNAP TS-212P 5TB NAS,iFi iSilencer3.0+DC iPurifier+iPurifier2, Sonos ZP80+SPDIF iPurifier
Location: Cyberjaya, Malaysia