No, Fiio and Dunu are different companies. They did however, team up in the past.
Honestly, if upper-treble is important for your library (like it is in mine) then I cant really recommend it to you at that price. Its too much of an “achilles heel” for me to be able to tell you to spend that much money on it. The EST112 and the SA6 however both look damn good.
source on dunu and fiio: The discovery thread! | Page 3511 | Headphone Reviews and Discussion - Head-Fi.org