I think I'll just stop here. You guys can't stand criticism and don't acknowledge that many people think it's a good product.
Goodbye
Your seems to bee a troll pressing this but I’ll answer anyway as if you where serious ….
No one doubts that that there are many who bought this and thinks it’s a good product. Ofcourse these snake oil products always find customers, have you bought one yourself ? it s same thing with people buying fake medicines and insisting it works for them.
You can find happy customers to all snake oil audio products , the maker of things like this are always plastering their website with testimonials from happy customers. But these are just anecdotes they carry no real information they are not even wrong as such listenings test are so poorly done. It’s almost the opposite you know they wrong because they heard the difference .
In reality these are the “marks” and the seller is the “con artist” , is this a familiar setup to you
However in reality it does not change the sounds as it has no mechanisms by which it could do this with a properly functioning DAC ,which is almost all DAC’s nowadays . It simply can’t work you realise this with very rudimentary engineering skills ( like me , engineer, but not audio ).
The probability that this product does something useful is exceptionally low .