...I'm regretting mentioning this in one respect, as whenever people think they understand something and something challenges this there can be a lashing-out at this affront to our framework we have established for getting a bearing in the world. This happens everywhere and in many scientific fields too at present where people get part of an answer and it becomes the whole answer and anything pointing to the fact you only had a part to begin with is not dealt with as it should be.
IMO the music data is a compound-form of bits arranged into Bytes within a frame-structure embedded within a data-storage format frame-structure and manipulated from different forms of static to dynamic memory in their own formats and eventually passed to the DAC.
The character of what I hear leads me to believe there is an ongoing translation process one is perceiving. One person who I respect in fact remarked they could hear the difference between a Western Digital drive used and another one we tried - I also listened and I heard what he meant as a kind of low-level tone-colouration. At that point in the demo I was mentally ranging about as to 'why' and what was happening - but it was undoubtedly there.
At the level of replay the ND555 offers and into the Statement System we used it is perhaps rather revealing of these things that perhaps before could be dismissed.
I used to design and manage database software for a few years and had to pull data from static to dynamic memory then packet into Ethernet packets and I know there is no one way of doing it.
At a higher level the data just has to be correct and all works well and how things are actually managed at a lower-level is nicely hidden and encapsulated in various device management protocols - I didn't need to know and it 'just works'.
But in a real-time data stream into wide dynamic-range audio system where incredible care is needed to keep noise to a minimum then and correlated noise due to all the lower-level data-wrapping mechanisms operating on the fly as the music is being un-packed and readied for the DAC probably could be audible.
While it is being debated I'll choose the best I can empirically, as that gets me where I need to be.
I purchased my HiFi and play music to escape my intellectual mind and it is one of the few means I find that allows the other deeper person to have some time here, so I can't run for a long time on speculation that blocks the path to my goal in the short-term.
The idea that a high-level check-sum of data integrity says all about the data in how it is arranged seems to be the thing I've realised (personally) is doubtful. As accurate data - yes it does! As how that arrangement of data will flow in real-time through a music system and be perceived - not that confident at all from these demos.