Steve Huff has published a text review to go alongside his fantastic video review.
During the review Steve states:
the Lumin experience is just rock solid
With all of the digital front ends I have owned or tested in house, I can easily say that this combo of DAC 200 or Weiss 204 with the Lumin U2 is among the finest I have heard Digital sound.
The Lumin U2 is one of those products that are truly high end in looks, sound and build. It delivers the goods just as a streamer and bested all of the others I have tried up to $5k. It creeps very close to the streamers I have heard that cost double or more.
Silky, sweet, smooth, detailed, three dimensional, emotional and beautiful are just some of the words that describe this piece.
This is easy, I highly recommend the Lumin U2 if you are looking for high quality and high end digital streaming. Period. This is almost as good as it gets for streaming.