Another Topping E70 bug: when the sample rate changes, it emits a loud CLICK. At high volumes this could damage a tweeter. It should auto-mute while changing sample rates, like many other DACs do. It only takes a few milliseconds.... I have found 1 minor bug in the E70 firmware. With the display in L-A mode, it goes dark after 30 seconds as expected. If while the screen is dark you turn the knob to adjust the volume by only 1 click, the display wakes up but the display shows the prior setting, not the new one, even though the actual volume does change. If you want it to show the volume you are setting, adjust it at least 2 clicks then back to whatever you want.
Hey! Topping! (is that still @JohnYang1997 ?) Check out these firmware bugs!Those bugs should be reported to Topping.
I do like the E70, but it would be nicer with the above.