Ban, welcome. Yes, points similar to those which the Audioholics review makes have been made here on several occasions. The lower impedance setting is only for satisfying UL requirements and possible legal liability concerns. It reduces the maximum rail voltage which the receiver can supply and therefore the maximum current and power, which the voltage controls, is also reduced in accord with Ohm's Law. You'll have no inpedance concerns with the Axioms which you're considering if the impedance setting is left at 8 ohms.
