@davetheoilguy - I have a Lumin U1X in another system that I added to my system with the Mola Mola Kula which includes the Tambaqui module. Although I noticed an improvement in the imaging and possibly width of the soundstage, the upgrade from the internal Tambaqui streamer wasn't enough for me to keep the U1X in my Mola Mola system. I've since put the U1X back in the other system where it pairs fantastically with a Holo Audio May KTE DAC.
I'm still looking for a better streamer match for the Mola Mola and am considering a Grimm MU1 next year. I love the Lumin products, but the Lumin house sound wasn't a great compliment to the Mola Mola (for me) and the quality of the Mola Mola streamer was better than I was anticipating.