My experience with this dac is without reservation for the ratio quality/price... More than that the final resulting sound of this jewel is tightly relates to his implementation in an audio system and in your electrical house grid...With a clean line, i experience none of the limitations that some reports , this dac is not a microscope tough, but his musicality and holograpgic presentation, his naturalness is my most important purchase in Audio... Price is way low for this diamond even new, Buy it used, there is many people that will sell it for a so called "upgrading"...To really beat it you must pay way more...
By the way before cleaning my audio house electrical grid, and before cleaning my audio grid, this dac was like somes say its sound : not detailed enough...But after cleanliness, this dac sound only musical with all the details, my other ordinary dacs, sounded like trash beside it... Finally the sound of any reviewer system is different than that of any others reviewers, and more than that, almost all people had never listen to their own gear ultimate potential in the first place,because of muddy electrical line and noisy audio grid, i dont even speaks about ubiquitous mechanical vibrations the importance of which almost all people understate... Because of all that i dont generally now trust really any reviewers except for very general indications... This dac in my clean line and house is a marvel without defects that i can hear of,and for me end of the game...This is simply the law of diminishing returns... A sound that is musical not a microscope is all that i ever wanted...I had it now...
By the way what i had said about this French Nos dac ,i can repeat about my AKG K 340 criticisms and negative reviews, that all come from people without a clean line nor a clean audio system, and the same is true for my Beloved Sansui AU 7700, his sound is good out of the box in any house, but to really listen to it you must have a CLEAN audio grid and more that , and this is another completely underestimated problem, a CLEAN house electrical grid... After that you have only music and not relatively good or bad sounds ...