what matters is what the ears hear....
For what it’s worth, the Aurender is not the best match for the BAT DAC because the N20 is AES optimized. The BAT is USB optimized.
Follow your own advice in the first part to confirm the second part.
It might very well be possible that you prefer N20 > BAT via AES, or perhaps N20 > BAT via USB over anything else via USB.
And then the particular AES / USB cable selection might make the difference.

