Hi, no idea. I had the same problem with my no. 39. I added a secondhand PS audio P300 powerplant, which is designed to convert 220v/50hz into 110v/60hz. Arguably, that 900 usd plus (including post and custom) even further evelated the sonic might of the no 39. At least according to those who are running European version of no 39 directly (without power plant).
