Yes, it helps protecting from ambient electronic interferences.

I've never heard that humming in my A3 with MB card. I've used the power cable that came with the A3 adding an adapter that doesn't have the ground connector, and other power cable from my office with the 3 connectors and neither of them produced that noise. The power here is 220v 50hz. Maybe...

Yup, I only use Tidal, I like to explore new music and I'm too lazy to download CDs :D

It should not be the cable, because it worked fine on Android 9 with the same cable and dac.

G975FXXS3BSL4 Same patch level.

I'm in Android 10, and neither of the two settings fixes it for me, it sounds like every 15 seconds. I had Android 9 on this same phone without any issues, so it's a firmware thing. I'm using the S10+ with exynos btw.

I had my S10+ exynos running connected to my Asgard 3 with MB card without any issues. Now I updated to Android 10 and I have clicking sounds like 8 or 10 seconds. :(

Some people here says that using the modi multibit instead the MB card gives more volume and air and space to the sound. (I think it's just the usual appreciation when you compare something with more volume, it seems to sound better). But as I have the Asgard 3 with MB card I can't deny that...

Nice to see you found an alternative solution :)

Remember the Asgard has a "mute" system when there is no sounds. You can hear a "click" coming from inside the Asgard when you connect or disconnect the audio source (the click sound comes from the Asgard itself, not through headphones).

Ah, noises by computer operations are usually present on cheap motherboards. I guess it's a desktop PC. I doubt that changing your PC's power supply would change anything :c

Dos you try different USB ports?

I ordered the A3 with the wrong power cord plug, so I'm using an adapter that doesn't even have the ground connection and I can't hear any humm. Something must be wrong in the wires of your home.

Yes, you should use high gain for high impedance headphones like the HD6XX which is 300ohm.