Quoting -"I agree. I find that the music sounds cleaner in the evening/night. I often sit in the dark which elimnates other sensual stimulations."
Most of you feel your systems sound better in the evening hours. Here it's just the opposite. During the daytime, my system sounds superb, with no grainy hash at all from the electricity, but around 5:30 P.M. it starts going in the toilet. I live in a small town and it's about that time everybody comes home, starts cooking, and turns on the TV. During the day there is much less use of the power grid, since there is no industry around here to suck up the juice. The difference is not subtle. Round about midnight it's starts getting clear again, but by then I can no longer stay awake. I've tried several brands of power conditioners, none of which made any difference- except one, a Canadian brand of power regenerator, which I no longer have. Circumstances required that I send it back. (A long, long story.) I now have a Running Springs which may help a little with the problem.