But. As i said there are already many common tests for this.Yes, it is. But if we want to have this properly tested, we need a proper test protocol, and that's what this should be about.
It’s not an "if" Question.and if you have them, they are more annoying than any SINAD issue a DAC might have.
It is inevitable.
But with proper Design on the DAC side this Common mode Currents can be minimized.
But with proper Design on the AMP side also.
And what many ASR users don't want to belie. even the cables can make a difference.
And since Good DACs have no audible difference in in good conditions (almost no common mode currents/noise and a high end receiver with good CMRR) and can barely be differentiated with the AP let alone by ear...
it makes no sens to test under this "ideal" conditions.
There are dozens of cheap DACs that are audible perfect under "ideal" conditions.
It matters more waht DACs are audible perfect under nonideal conditions.