I stand corrected. I just looked at the main page on vox for the AD60. Downloaded the manual, although it is a bit confusing as at the start of the manual it says that the power output stage is powered by a 12ax7 - but at the end of the manual it says the 12ax7 is a preamp valve!! Anyway there is a bit of a price difference between the old 60watt and a new 50watt so i might just go with the newer model