M E A S U R E M E N T S
TL,DR: 110dB SINAD, just like the Topping E30 and the Khadas Tone Board. Fits very well with the 114dB JDS Atom amp indeed.
Obviously the D30 got a screen, but… not made in USA, not much of a warranty either. I say pay 30$ less and get the Atom for piece of mind. JDS Labs warranty/service is excellent.
Idea: Get the 100$ Khadas DAC and the 100$ Atom DAC and see if you can hear the difference between AKM and ESS chipsets with the exact same SINAD 