Hans and Darko are two audiophile YouTubers who both prioritize digital audio. They both agree that what comes before the DAC makes a difference.
In this video Hans mentions that galvonic isolation and reclocking, although helpful, are insufficient to fix all noise.
https://youtu.be/d9RSLHOFOTcAnother commenter posted a relevant Darko video earlier, so I won't repeat that one here.
In my experience, treating a modem and router as part of the source has been useful, and I can say that adding low noise power supplies to my modem and router made an obvious improvement for me. This, in my view, the convenience of wifi comes at a cost.
I wonder how many different philosophies underlie the various views expressed in this thread in answering the question wifi vs wired for SQ. Here's my attempt to articulate them:
1. Nothing upstream from a quality DAC matters for SQ.
2. Nothing upstream from a quality streamer (or reclocker) matters for SQ.
3. WiFi can sound identical to wired when the WiFi card is well implemented.
4. Noise is introduced in all sorts of ways upstream, and the tools we have to remove noise can be used farther upstream than a streamer with clear improvements to SQ.