The Lumin U1 has a very clearly defined goal, as well as a precisely selected target group. It is like a specialist tool dedicated to certain users having precisely defined expectations. It does not do everything, because it does not have to. But that what it does, is done in a special and perfect way. Because I cannot describe the combination of timbre, saturation, musicality and resolution in another way. Does this summary remind you of something? Well, it does remind me of something. The U1 is a file playing equivalent to the headphones Audeze LCD-4 we reviewed, and at least for me, this means a clear, and obvious recommendation.
Marcin Olszewsk
https://soundrebels.com/lumin-u1-english-ver/
I have one and it's a excellent piece of equipment. Expensive, but hooked up to the D1100 this thing really sings!