as you know I am semi interested in one of these, any sellers PM me?

what has put me off so far was a repair report on what may have been an earlier version, PCB looks blue rather than your black. I suspect given your comments on tone controls you may have seen it but for anyone interested it is below - it has a probable circuit diagram too

http://www.g4cnh.com/public/A_Look_A...Sheng_728A.pdf