Great, well now you are ruling out using the iFi Zen DAC Signature V2....? Correct.Me too, happy to find the origin of the issue. Genelec dealer was so gentle that he recovered my 8030C speakers only because I told my preference to G Three model just by connecting to the WiiM Ultra.
So I sent him speakers and he sent me the G Threes and bought the WiiM, and after bothering the seller and spending the 400€ to the WiiM, it sounded so bad!
And I didn’t know if the problem was the G Threes connection or the WiiM…
I don’t know if there’s an adjustment to set the volume on different steps, but probably if many people complaints they will release a firmware update, it seem to be a couple of code lines to do that.