A bad mood may make you less appreciative of the particular selection you chose; but the recording and the equipment are the same. My perception of the sound of my set-up has been consistant since I assembled it; even if sometimes I don't feel like listening. And this still does not address the issue of why a really good sound is recogniseable immediately. I have not heard anyone complain about listening to a really nice 300b amp through good hornloaded speakers yet. They may choose other components for themselves but still are aware of the quality of the sound they experienced with that system. Even if you have a bad day you know the Audio Note Conquerors through Avant Garde' Uno's sound good. Colin; the Uncertainty Pricipal deals with observation on the Quantum level, I haven't met anyone who has experienced that particular event. I know a Martin 1952 D-28 sounds good w/o any prompting or emotion. How can that be?? Try this for the little guys; Scotch and Milk; keeps 'em calm and peacefull. Always worked for my guys. Don't use the single malt, cheap stuff will do.