You should contact Devialet support and tell them about the high power usage. I believe another devialetchat user got a new one when having a similar issue.
Edit: It could be that the 2018 model has an older chipset with ADH, not ADH-2, and therefore consumes more power. Did you buy both speakers at the same time?
Edit: It could be that the 2018 model has an older chipset with ADH, not ADH-2, and therefore consumes more power. Did you buy both speakers at the same time?
Living room: Kii Three/BXT with Control.
Den: Tannoy Precision 8 iDP with TS112 iDP subwoofer.
In the cupboard, waiting for a sibling: 1st gen. Phantom Silver running DOS1
My Phantom Voyage
Den: Tannoy Precision 8 iDP with TS112 iDP subwoofer.
In the cupboard, waiting for a sibling: 1st gen. Phantom Silver running DOS1
My Phantom Voyage