If you have stray current related problems, an extra ground wire connected to a screw of ADI-2 is the cost effective and flexible remedy, something like this:
https://www.conrad.com/p/wolfgang-warmb … et-1337382

The solution above works, is safe, and doesn’t void the warranty.
All this cannot be guaranteed for a non-standard PSU from Mr. Chin-Cheapo.

There’s even a mod-option for the ground-cable, even a layman can do:
inserting 100 Ohm resistor prevents ground loops while discharging the stray voltage.

What exactly are you heading for, what’s the problem you try to solve?
If you give as detailed as possible information we might be able to help.

Unfortunately that is not true. We would have supplied such a PSU if it were available. For years the PS industry did not want to do it, at least for these small wall warts. We are now in the process to finally receive grounded PS, but until they start shipping with all our products will take some time.

In my experience in 90% or more of all cases a fully grounded PSU causes more trouble then the little stray current of an ungrounded one.

And ungrounded PSU gives you all the options to insert your own grounding scheme.

Best would be, having a PSU with fully grounded primary - for security - and a resistor grounded secondary - to avoid the ground loops you find everywhere in audio.

BTW: there’s not much that can be grounded on a primary of a SMPS encapsulated in plastic.