Can a streamer affect negatively sound resolution or introduce noise on the signal chain?

[Chrise36]

The PC would be my first choice over any streamer of any brand when connecting to a high quality DAC. To me streamers are invented for people that don't want to use a PC. I have tried lots of streamers and they are adequate but I much prefer the larger screen on my MacBook Pro and Audirvana to any little app on a phone or iPad. Plus, all my music is on the MBP. Can't get too excited about paying extra for a streamer when I would rather use the computer that has so many more capabilities. I can even control the MBP on the stereo from another spare old MBP if I want full house wireless control.

There is absolutely nothing any streamer can do that my computer can't do easier with a quality DAC connected. It's really a personal choice. I have heard a thousand reasons why people don't want to use a computer. The reasons make me laugh.

The pc is actually one of the worst sources due to psu leakage if you are using usb.

 

[Miguelón]

The pc is actually one of the worst sources due to psu leakage if you are using usb.

Usually I connect my iphone, but still connected to a psu of CC at 5 Volts.
But in which sense this is an issue with AC psu? EMI?