I had the same problem with D200. Please send a message to Devialet support and they will help you. Basically you probably need a new filtering board. It's quite easy to install. Your dealer can install it for you or you can send your device to Devialet and they can install it.
Bluesound Node > Matrix Audio X-SPDIF 2 > Genelec 8351B & 7360A
Devialet 1000 Pro
Bluesound Node 2i > Genelec 8330
Tampere, Finland