Musician is a spin off of the Denafrips line of DACs. I read an article on it a while back when a reviewer did some research and refused to review the Musician.
It appears that the owner of Denafrips was given an offer he couldn't refuse and while building DACs for the Denafrips line sold by Vinshine, he made the same devices for Musician. They even had Denafrips name inside them for awhile. They capitalized on all the work Vinshine did and ran with it.
It was contentious and the people behind Musician created a "history" of their audio journey and denigrated Denafrips in the local press. Seems that Vinshine took the high road and wouldn't comment further on the matter.
All the best,
Nonoise