@david_ten
You're welcome. And thank you for the soundstage review. The majority of the write up is a regurgitation of what has already been said/written regarding the analog A version, however, there is enough opinion (which I agree with) in the comparisons and conclusion category to glean that the reviewer believes the upgrade is clearly worthwhile.
@georgehifi
Thanks for your feedback after your dissection of the analog board photos. The answer to your question, as I understand it, is "yes and maybe". Any *new* Yggy shipping as of October 2017 contains the new analog B board. "B" stock Yggy's are rarely available. No surprise there. I have no idea whether a "B stock" item would be analog A or B, but I'd imagine it could be either. The serial number of analog A Yggy's begin with an "A", while analog "B" begins with a "B". So it would be no secret to the buyer of a "B stock" unit.