The only AKM DAC device that I have used (and know the AKM chip is inside) is the Fulla 2. Its said that AKM chips are "brighter" but I would take that with a grain of salt. I know that AKM is more versed for DSD music and its said that their AK4490 is more comparable to the ES9018/9028 chips. I haven't done enough side by side comparisons of the two to say that one has more detail than the other because my Fulla 2 is not the same level of product as my SMSL M8 / M8A or Topping DX7 so the comparison would be unfair. The THD+N does look good but remember that with many of these chips its a bit exaggerated because you won't reach those figures when playing 16/44.1 music, its just the maximum that it can reach provided that you are playing 24b music or high DSD.