Just a thought: you may be able to replace BOTH Lumin U2 Mini and Qtest (Chord) with a single Lumin DAC upper in the line. They are DACs with streamers built in. Such as the T3, P1 or X1, depending on your budget. Doing this will also simplify your system (one less box, one less power cord, interconnect...)
Oh.... don’t mind Jason Bourne. For some reason he is the first to post on each thread with the same stuff. Disregard / ignore him