I own the Aune X1 Mk2 which has the same sound and I would like to share my conclusion that the DAC section of this unit is awesome.
After having done some A/B comparisons I can safely claim that the Aune X1 DAC easily outperforms Fiio E18 and Centrance DACport LX which means it is at least one class above ODAC.
I wonder how it would compare with Meridian Explorer because I consider the Meridian as a potential purchase....