I believe this is the second time that someone has cited that article in Audiocircle only to be reminded that all the principles are right here on this thread. I am the guy who gave Thuchan (aka Eckart) the chip for his TT101. I gave him two, in fact, because up to that time I had no idea whether the ones I bought from Hong Kong would actually work. (They look correct, but who knew???) Sadly, I do not have an inexhaustible supply, and I prefer to keep a few for my own TT101. However, the good news is that you too can purchase the chip from Hong Kong. I think the part number is "SC3042A", but do not take my word for it; the part number is engraved on the black surface of the top of the chip. If you need one, search for that part on Alibaba, and you will soon have so many offers to sell that you won't know what vendor to choose. I chose the one who had the best command of English. Those vendors never give up. Even 5 years or so later I still get emails from some of them. By the way, my TT101 did not need a new regulator chip. It's still running on the original.
By the way, there are several other chips in the TT101. I don't know what they do.
By the way, there are several other chips in the TT101. I don't know what they do.