You are the DIY guy in this thread, the first thing I noticed on the BACCH website is licensing opportunity, care to weigh in please? It seems right in your wheelhouse of new technology, thanks.
Great review, but the $23K price of entry is steep . If you already have a two channel system and don't want all the complexity of a 7.2.4 system, this would be the way to go IMO, especially when this reviewer couldn't tell the difference between his $47K DAC and the BACCH unit with the $4K DAC upgrade:
https://www.theabsolutesound.com/articles/theoretica-applied-physics-bacch-sp-adio-stereo-purifier/