The X-1000 mono blocks run to 128 Watts peak in Class A. Maybe I'm mistaken, but it's hard for me to imagine with that in mind, that the X-350 runs in Class A to 100 Watts.
Gee, Pass's web site seems to disagree with the manual: http://passlabs.com/pdf/articles/leaving_class_a.pdf The article suggest that the Pass X-350.5 leaves Class A at 30 Watts into an 8 Ohm load.
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