"Bits are bits" ...

[mélaudiophile]

(12-22-2017, 11:30 PM)bz31 a écrit : Encore un test amusant de ce site sur des câbles et adaptateurs USB : https://www.audiosciencereview.com/forum...ence.1887/ et https://www.audiosciencereview.com/forum...able.1888/

Sa conclusion, vous entendez une différence entre les câbles USB parce que votre DAC est mauvais, et dans ce cas un adaptateur serait un très bon choix.   Je pense que ça va plaire à paulw et Morbius

Il faut lire plus loin: en gros ça n'a aucune importance, c'est l'échelle choisie qui magnifie, cela chagrine la vue mais pas l'oreille :

While differences still show, they are so, so down in level as to not ever be an audible concern. BTW, the Schiit normally does much better if fed with lousy USB power. Here I am powering the Sonore microRendu with my high quality lab supply which helps a ton in cleaning its output.

So as usual, we can show measurements that bother the eye but not the ear.

Summary
For the first time anywhere, we have shown that we can change the analog output of a DAC by changing how we feed it in digital domain in USB. Shorter cables provided improvements that were visible. Alas, two other factors conspire to make this non-news:

1. Schiit Modi 2 that I have tested is horribly designed. It is sensitive to both USB power and data noise. Even a cheaper DAC like Behringer shows that such sensitivity is due to poor DAC design than anything to do with USB cables. The Behringer performance is better than Schiit with any cable and shows no need for tweaking the USB cable.

2. I have hugely magnified these differences. Without this magnification, the differences even with lousy DACs like Schiit are literally in the noise.

jean