I will try to explain it without links or photos.
What does a customer expect, if the person is looking at a product from a high-end brand, and the product also have a "high-end" price tag? I assume a high-end product.
The technically designed of this amplifier is very simple, and I see no use of any attractive or costly components. It's standard amplifier modules, and what looks like unknown plastic banana terminals. It seems like the money to this project, has been spent on the purchase of a well-known brand, and the remaining money is used by the design team.
Find a photo on the web (Google: "Devialet inside"). There is HUGE (if not extreme) difference in both the technical design and component. Please note, that Devialet is less expensive, and also tested to sound better than this Wadia.