MQA?

The entire hobby / pursuit falls into that bucket....

The very fact that almost everyone concedes that some enjoy the MQA difference and some do not effectively designates this technology to a category other than general improvement.

Simply remove "MQA" from your statement:

The very fact that almost everyone concedes that some enjoy the difference and some do not effectively designates this technology to a category other than general improvement.

I have enabled MQA on my W 20.    From what I am understanding above even without the  MQA module in my Metrum there Should be a sound difference between MQA files and non-MQA files  I am going to listen to several albums in each format and see if I can hear a difference and which type of file I prefer. It would seem that could possibly help me decide whether I want to have the MQA module in my DAC?

I have a Bluesound Node 2 with full MQA decoding and my experience has been like some others. When I feed the Bluesound into my Marantz Dac it sounds better to me that way than using the Bluesound with the full MQA unfolding.
Who woulda thunk? Reckon I’m kinda lukewarm on MQA. 

@headspace but what about when you listen to the song not in MQA? do you notice a difference when using either DAC? 

Yes. I find I prefer the sound of the Bluesound ran through the Marantz ND-6005 whether it’s a Tidal Master or not. Everything just sounds better to me that way. I even run my Oppo BD-103 through the digital connection into the Node 2 and then through the Marantz when playing CD’s. Everything sounds better. Must be the CS4398 chip and the implementation of the HDAM in the Marantz? It gives it a warmer sound and a deeper soundstage than the burr brown Dac in the Node 2 at least to my ears. I’m certainly no technical expert on any of this stuff but I think I hit on a pretty good combination for my budget. I also get the flexibility of using 2 music streamers in my system.