OBJECTIVELY, is there any sound improvement ??

[AudioDoctor]

yes, but I don't have any objective data to show you, but boy was it obvious immediately...

[AudioDoctor]

3 minutes ago, beerandmusic said:

 

Aren't most modern day DACS capable of isolating PC noise (to an audible extent), especially in the case where I am suggesting a network dac?

 

If that were true there wouldn't be a need for the USB De-Crapifiers and Optical Network Players...

[AudioDoctor]

11 minutes ago, gmgraves said:

Well, among other things, the “new” Yiggy has a totally redesigned analog section, a totally new design for the USB input, and some changes in the R2R DAC including a revised filter. 
I don’t know about the Gungnir.

 

The Yggy has an R2R DAC?  I thought this (Analog Devices AD5791BRUZ x 4 (2 per channel, hardware balanced configuration)  meant it has 4 DAC chips...

 

these, to be exact:

https://www.mouser.com/ProductDetail/Analog-Devices/AD5791BRUZ?qs=sGAEpiMZZMswix2y39yldfRSUiTQKynFD3UY2S5SRBo%3D

[AudioDoctor]

7 minutes ago, gmgraves said:

Go to page 19 of the data sheet. It shows the resistor ladder network. You do realize that R2R is another way of saying a ladder DAC, do you not?

 

Yes, but I thought those were made up of a bunch of resistors and looked like this. I guess I am wrong.