Re: Help with test control
Reply #10 –
It's a long long thread. It's many pages in before two members (confusingly called mansr and manis...) agree to do the test
https://www.computeraudiophile.com/forums/topic/38493-blue-or-red-pill
To much to read. Some things i gathered is that a software player with audiophile parameters can mess up the output enough to make a DIY DAC sound different without breaking the data.
This is what they call different sound of bit-identiocal files while i can imagine it is more about broken DAC designs can behave strange without buffer 
Would be nice they do a thread one day with the most important parameters in one place.