Help eliminating USB noise from PC to Topping E30

[JohnJCallanan]

Hello all, I constantly hear high pitched buzzing and crackling through my headphones when using USB to connect PC to E30 to Schiit Asgard 3. I used to fix this by using optical, but my new motherboard does not have any sort of optical or coax out, only USB. This brings me back to the original problem: the usb is fuckin noisy as shit and topping dacs in their race to 0.000000000000001 SNR gimped galvanic isolation in their crap to reach their price point, leaving me with dogshit sound.

What can I do?

Balanced is out of the question as that's simply too expensive.

 

[pma]

I use this

USB-ISO

Full speed USB isolator 1000VDC for protecting your PC or laptop while connecting USB devices wired to high voltages CE certified

www.olimex.com

Topping D10s + E1DA Cosmos ADC as a measuring system

This combo make an excellent low cost measuring system, enabling to measure harmonic distortion components down to -130dBr, at about 300 EUR total price. I use the D10s with Olimex USB isolator to avoid signal ground loops. Below please see the measurement of my discrete preamplifier Dispre 2 -...

www.audiosciencereview.com

 

[Zoomer]

Search results for query: usb noise

www.audiosciencereview.com

 

[JSmith]

What can I do?

You could just convert USB to optical/coax with something like this;

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JSmith

 

[JohnJCallanan]

You could just convert USB to optical/coax with something like this;

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JSmith

do you think i can try a somewhat similar solution, by getting an HDMI/DP to optical cable and plugging my GPU into the DAC, like you would a GPU into receiver?

 

[Dunring]

I just fixed the same problem with an E30 last night. Febsmart 2 port USB card located at the bottom slot on the computer away from the video card. I turned the power supply over to suck air in from the slots in the case and put 4 rubber doorstops on the bottom to raise it up.
The I plugged in a long enough Amazon basics USB cable, and used a USB extension cable for the power to run both from the Febsmart card. What really finished it was adding some ferrite emi filters to each end of the usb cables. Finally even at max volume on pause there's no hiss at all. This is on a heavily overclocked gaming system so it was the worst case scenario.