I think that you should provide some more info:
how do you know that it looks Italian?
does it have any name?
is there a manufacture year, or at least date on capacitors?
were the output transistors replaced previously?
how do you know that it was designed for vertical MOSFETs? Maybe it was designed for lateral MOSFETs and someone replaced the transistors.
For me the higher bias looks much better that the lower one. I wonder why the ballast resistors are missing. This, and the fact that the bias transistor is not on the heatsink somehow suggests that the amp was designed for lateral MOSFETs. Answers to the questions above (or even a photo of the power amp board) could greatly help. For starter, I would add ballast resistors. Please note that if you are measuring power supply current, you don't know whether quiescent current of one transistor is 5 mA and the other 145 mA, or they are both 75 mA. The correct way of measuring this is with ballast resistors.