Yes my 30+ years of employment was in the field you have mentioned, but I fail to remember where you dug this information up from? I guess I will just have to blame that lack of recall on 'old age'! (grin)
One thing I also failed to mention. Mexico City also had one of the 'dirtiest' electrical grids on the planet (population 21 million), with constant failures/breakdowns. Not my idea of what would contribute to a happy listening sessions! I can only assume that Raul must use some kind of 'power regulation' in his system.
If not. ?????
Regards,