Reconfirming the known: DAC hierarchy

I have used separate DACs since the late 1980’s. I have had many and understand the hierarchy well. But recently just had a reconfirmation. As always hearing the differences is always more striking than just thinking about them. 

About five years ago I was helping introduce a friend to the high end and ultimately build a system. He wanted to start inexpensively so I suggested a Schiit Yggdrasil DAC and since I needed to upgrade my office system I bought a Schiit Gundgnir multibit ($1.3K) for him to check out and he ultimately bought the Yggdrasil (A2) $2.5K. Not long after he bought ARC equipment with a Linn front end with  Majik DAC... a very notable upgrade... then a couple years later upgraded the DAC to Exakt... for a surprising improvement... he was shocked. He experienced the multiple surprising improvements Gundgnir --> Yggdrasil--> Majik --> Exakt. 

My office system was pleasing until a month ago or so my Gundgnir bit the dust. I asked to borrow his unused Yggdrasil. I was shocked (this is what keeps you in this pursuit for a lifetime) how much better the Yggy sounded... I knew it should and I could describe the difference before putting it in... but when I did I am always surprised at how obvious and substantial it is. My friend was kind enough to sell me the Yggy so I didn’t have to buy a new one. 

I had lazily used my M4 Mac Studio as a streaming source when I had gotten rid of the last of my Microsoft / Intel stuff ( big tower for the desktop computing). So since I had to pull out the audio rack I decided to use the Bluesound stream I had gotten for breaking in cables and stuff. Wow, a big improvement... I mean, I knew it was coming... but it's alway surprising when you hear it an it sure was a reconfirmation of how a really low level budget streamer is better than a PC. Which I have proven to my self  many times... but that still, when I hear it is just really obvious