Re proving or unproving things via blind tests,
As said before, blind tests don't convince anybody these days--among other reasons stated above I'd like to add, that to properly conduct a blind test in a way that removes confounding telltales from the equation, often requires control methodologies that "the other side" will not accept. For example, if the DACs have a timing as well as volume difference, then fast switching between them would not work unless you run the signals through something like VSTHost with a delay plugin on one side, which would immediately make the blood boil in audio purists :basshead:
I think we need a more convincing demonstration that more people can accept. E.g. we could have a demo black-box system driving a HD800, that sounds "smoother", "more detailed yet less fatiguiing", etc. than any source/DAC/amp system the audiophile cares to throw at it. Then we open the black box to show a bog-standard smartphone running a custom HD800 correction profile on Viper4Android or something.