Poor audio quality when using a power bank

[ChristinaVF]

Hi,
I just recently built my Phoniebox. To improve the audio quality and eliminate the cracking and hissing noise, I use a USB sound card (from Sabrent).
But when I use one power bank both for the RPi and the speakers (Trust Leto 2.0), the hissing and cracking noise is back.

Do I need to use separate power supplies for the RPi and the speakers or is the problem with the USB hub? Or am I the only one experiencing this and using another power bank might solve the issue? Right now I have a Mi Power Bank 10400mAh?

[0s1r1s]

I have the same problem.
Just found this related Issue

[MiczFlor]

Hi @ChristinaVF @0s1r1s
thanks for helping each other out :) I will close this, assuming it's solved?