Besides the whopping cost difference note that the Lumin works with Roon and Aurender does not. (Roon done right needs some other goodies,FYI)
Great DAC and Streamers will cost with the desired better audible results.
Here’s a Lumin X1 Stermer/DAC. The T3 or used T2 great too. Aurender and many others also great. The choices are many with SQ matched.