Youtube audiophile hi res sounds MUCH better than my Eversolo streamer

I would recommend using Audirvāna with Tidal, it will give you a noticeable better sound quality.

I returned my A8 because it just didn't seem to hold up to the hype.

I'd want to see a link to a YouTube video as an example. 

Are you referring to clips where the user mics a system playing back some track through a system?

Another good reason to own and play CD's - and DVD's! Who knows what processing the music/film data goes through before it's streamed?

There does often seem to be some phantom processing going with various media.  Radio and Sat sound highly bass boosted at times.