Hi guys.
Could not resist, pulled the trigger. After some back and forth, Kingwa answered all the questions i had, especially about turning the pll off, which can still be done but has less effect because of the better firmware since V7, if i understood correctly.
Also, about the ladder, i tought Kingwa was using a magic trick to reduce the sign magnitude ladder to 72 resistors. The thing is there are 100 more resistors per ladder on the other side of the board! So nearly 700 in total. Kingwa is very positive about his new baby and he was able to convince me it was a better dac than my current M7 with latest firmware.
I can't tell you the number of times I've underestimated Kingwa only for him to pull something out that totally surprises me.
I have a Master 9 here now too, and I wish I'd gotten one far earlier, as it brought out even more out of the DACs.