Hi steinkrieg. Welcome to the forum.
At the time I was in the market for a DAC (9/17) I too had considered Lumin. Any model. At face value, their offerings seemed a bit "pricey" with respect to alternatives. I realize you are looking at a music server. Nevertheless, similar to what you’re doing now, I tried investigating Lumin based on Internet searches and so forth. I even called a local audio dealer (Audio Breakthroughs, who doesn’t carry their line of products, but who have been in business over 30 years) seeking their opinions. They told me they never heard of them. I wound up getting a Schiit Yggdrasil, which - all things considered - I’m happy and content with. Wish I could offer you some more information. Best of luck!
At the time I was in the market for a DAC (9/17) I too had considered Lumin. Any model. At face value, their offerings seemed a bit "pricey" with respect to alternatives. I realize you are looking at a music server. Nevertheless, similar to what you’re doing now, I tried investigating Lumin based on Internet searches and so forth. I even called a local audio dealer (Audio Breakthroughs, who doesn’t carry their line of products, but who have been in business over 30 years) seeking their opinions. They told me they never heard of them. I wound up getting a Schiit Yggdrasil, which - all things considered - I’m happy and content with. Wish I could offer you some more information. Best of luck!