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

128x128brewerslaw

@audphile1 

I still take the view that the problem is caused by breaking up the analogue signal into billions of tiny fragments that cannot be correctly reassembled.  This is the origin of dither and clock error.  It would seem no-one can solve this - the issue is 40 years old and there is no solution in sight apart from accepting the problem and reducing it by engineering.

As to starting vinyl from scratch, many older audiophiles are disposing of vast numbers of vinyl albums, either on downsizing or when their ability to listen comes to an end, one way or the other.  There is a plentiful supply - that's where I got most of mine from.  Many are near mint because we cannot play all our LPs very often and we look after them when we do.

I have also written that many audiophiles obsess about record-cleaning to an unnecessary extent or even ridiculous extent.

This can happen due to upsampling exceeding the dynamicange of the format.  Use Roons headroom settings to reduce by ~2db.

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.

 

@cleeds when I read that post I knew that is the battle not worth fighting. 
@erik_squires good suggestion!