Power Purpose

...just fooling around a bit.....plugged my power amp into a different outlet......boy ...so much better
Stringreen - 
Not saying there isn't something of a more fundamental nature going on between the two outlets; on the other hand, I wonder if it could be something as mundane as wiping the plug blades via unplugging and plugging back in thereby providing an improved connection?
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When was the last time you cleaned your contacts? People clean so infrequently that sometimes even just the cleaning action of unplugging and plugging cleans things resulting in better sound.