I did not say nor claim myself that nobody can hear difference between dac especially from different design...
My chinese HIDIZS dac is more detailed than my more organic french NOS dac TDA 1543 By Christophe Mariac...
But i said that it is way more wise to experiment with acoustics parameters and learn basic concepts than buying "upgrading" dac :
https://www.youtube.com/watch?v=hOOHneFYGYA

