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- 6 Sep 2016
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You're on to quite advanced settings there for the home market! I presume your amp is pretty high end and could be used with THX reference style cinema speakers rather than simple hi-fi speakers if desired...
Good amplifiers have no need for a impedence selector switch. In fact, you'll find those switches on lower end AVR's.
Yamaha's have poor output power, once you start connecting up all speakers power output really drops by a considerable margin.