No, the original D-Premier didn't have ethernet. It didn't have wifi either until Devialet delivered an add-in card, but this wifi implementation was not good enough. If you're lucky you may get 16/44.1 through with Roon AIR, but you can generally forget stable 24bit streaming. It has always had the AES/EBU XLR input though. A DigiONE + a Neutrik NADITBNC-MX is a good and cheap solution today. Back then I used a Stello U3 for USB to S/PDIF.
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Devialetless!
Roon, ROCK/Audiolense XO/Music on NAS/EtherRegen/RoPieee/USPCB/ISORegen/USPCB/Sound Devices USBPre2/Tannoy GOLD 8
250 Pro CI, MicroRendu(1.4), Mutec MC-3+USB
Devialetless!
Roon, ROCK/Audiolense XO/Music on NAS/EtherRegen/RoPieee/USPCB/ISORegen/USPCB/Sound Devices USBPre2/Tannoy GOLD 8
250 Pro CI, MicroRendu(1.4), Mutec MC-3+USB