As was noted below, only a partial unfold can be done unless you have a MQA DAC. The Bluesound Node 2i is one such DAC, however once you pass it off to a DAC that doesn't support MQA I think you lose the full unfold.
However it works (or doesn't) at the end of the day, how does it sound?
I have two Bluesound Node 2 devices. I run one through my Auralic Vega (no MQA) and the other through my Mytek Liberty (MQA enabled). Being a better DAC, the Vega sounds better with MQA files even if all the MWA magic hasn't been done to them. For my computer system, I use Tidal's desktop app which does a partial unfold and a MHDT Labs Orchid which is a R2R DAC (no MQA) and it also sounds better than the Bluesound/Mytek combination with MQA files. I have used both the Orchid and the Liberty in that system and prefer the sound of the Orchid (not just with MQA) over the Liberty. I also have a Sony
Sony TA-ZH1ES headphone amp (no MQA) that I have used in that system and when used as a DAC, it also sounds better than the Liberty.
I would worry more about the overall sound quality of the DAC than whether it does MQA or not. Perhaps those with super high end systems and golden ears might prefer the sound of MQA, but I have not found that not having that last unfold seems to make a lot of difference. A lot of the Tidal Master files do sound really good, but so do hi-res files on Qobuz.
