I’m not sure how this thread devolved into a discussion of DACs unrelated to the OP’s question -- that’s how these discussions always seem to go..."expensive" DACs (i.e., more expensive than whatever the poster likes) are the new "snake oil" I suppose.
According to Herb’s column in Stereophile, some of the tech for the Tambaqui was discovered in 2004 and production began in 2013. My long-term reference/snake oil is totaldac, and the basic ideas there have been in use since at least 2010, refined here and there over time. I guess that can be good or bad, depending on your perspective. Perhaps you’re assuming that new digital must be better than old digital. My view is "Don’t Mess Up a Good Thing".