Baffled and Frustrated: Streaming/DAC Sound Issues


Hoping to find some guidance here regarding a significant noise issue. Running Quboz through Roon. Relevant Gear is an Auralic Aries G2.1 > Morrow USB cable >Aavik D280 DAC > Wywires Platinum RCA >Anthem STR.  

Previously had some issues with the Aries but that’s hammered out and sounding great.  Now, when running many songs through the DAC, I’m hearing terrible “crunching” distortion.  There’s very little consistency in the problem (loud Pink Floyd sounds great, loud Motley Crue sounds like garbage) except most hard rock/metal, which i started putting on per Morrow Audio’s recommendation for burning in their USB cable, is always terrible.  Volume is irrelevant, I’m getting the noise at sub-30db. The 4 DAC settings: upsampling/ non upsampling/fast/slow don’t change anything. USB cable isn’t likely the problem, it sounds great from streamer to amp without the DAC.   I’m running out of settings to change around.  Anyone have an educated guess or experience with either the output settings from the Aries or D280 setup that can provide any guidance?  Dealer wasn’t very helpful.

 

Thanks much,

Peter

brewerslaw

Showing 2 responses by cleeds

 

clearthinker

Wikepedia:    A Fourier transform (FT) is a mathematical transform ...

Oh, I understand what a Fourier Transform is, and that it's a theorem, not a theory. I understand both how it works with digital (conceptually) and I understand why the same principle applies to the squiggles in a vinyl LP. You appear to understand neither.

I am given to believe that it is impossible to remove clock error entirely.  Hence my comment that the pieces cannot be put together again correctly.

I understand that you hold certain beliefs. Digital audio is not intuitive - at least not for most of us - so it can take some understanding to reveal that belief and fact can be two different things.

Did you watch the video? it kinda blows apart your theory, doesn't it?

The reason this stuff is important is because digital audio is not perfect and if we want to improve it, we won't be successful by trying to remedy imaginary faults.

clearthinker

...the problem is caused by breaking up the analogue signal into billions of tiny fragments that cannot be correctly reassembled ... It would seem no-one can solve this - the issue is 40 years old and there is no solution in sight ...

That is not at all how digital audio works. There’s "no solution in sight" because the analog signal is not broken up "into billions of tiny fragments."

The basis of digital audio is the Fourier Transform. The theorem that makes digital audio work is the same math that describes how analog audio works. Believe it or not.

Here’s a video that actually demonstrates this.