[Cuki79]

Agree with Jon,

Here is a picture of an AER alpha:


When you see a big transformer like that (the big donuts on the back left), you know it is a traditional power supply and not a SMPS.

Those will not accomodate Modified Sine Wave (MSW) inverters.

Note that old power supply design are more expansive than SMPS... There is no reason why the AER compact 60 would not have one. (Why would AER save money on the compact 60 and use costly stuff on the alpha?)