Given that the power supply eats 5hp and my planned design also exceeds the power specs by roughly 10 percent, I wonder what it takes to move to some external power solution, giving more power and saving 5hp. Has anyone done that?

Regarding the power specs: The Arturia reads 15V/3A on the frontplate, so that indicates the demand from the powerbrick. However, it´s only specified to deliver 12V/1.6A on the +12V distribution. That´s just half the amps... is this limited by the power module itself or is the distribution board limited to 1.6A ?