Sorry to keep derailing your thread but a quick fyi that Lampi NA had a new in box Amber 3 with the new USB implementation available ... so I decided to bite the bullet and grab it. Was never a huge fan of Amanero USB’s so this revision pushed me over the edge.
Back to the main topic of your thread .. if your main interest is streaming and you already have a great DAC I question the need for even something like a Lumin. It’s a lot of money for, DAC aside, what is basically a simple computer with a clean audio output.
I am using Roon server on a Mac mini in my basement, which then streams over Ethernet to a simple but high quality Roon bridge/hqp endpoint connected to the DAC. Taking the DAC out of the Lumin equation, I doubt there is any audible difference in sound quality. Obviously not as plug and play mind you.
I also find it amazing that in their $4500 T2 streamer/DAC they hard wired a switching power supply. You have to move up their chain from that to get a linear power supply ... !@#
If you want local storage/playback of digital files then the Innuos certainly seems more appealing.
Imo.