I just sold my Naim NDX2/XPSDR, which is a fine streamer. I am getting a Weiss DAC501-MK2 next week, and plan to use it as a Roon endpoint without a streamer on the front end otherwise.
I auditioned a Lumin U2 Mini with a Weiss DAC204 and sounded about the same as my NDX2/XPSDR, but decided in the end to go 50q with no streamer. Roon is all I need.

