Well, both 755 and 770 can draw more than 10 amps. Exactly how much they draw is a subject of some debate. :-)
I wouldn't be surprised if what the salesman told you, Smart Little Lena, was correct. If the outlets brown out under heavy load that might do unpleasant things to a power amp. It almost certainly wouldn't sound nice.
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Matthew J. Hill
matt@idsi.net
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Matthew J. Hill
matt@idsi.net