I do not knows it's the audio God or not but my system sounds much better in PM time. I live in a surburban area and the neighbourhood is pretty quite and secluded from heavy traffic but during the AM time, my votage fluctuates constantly from 119/120/119/121 and I have to listen at a higher volume as oppose to after PM time, I do not have to crank it up that high and the sound of music is much better. I notice the voltage after 9:00 PM is pretty much stable at 120/122 therefore, I develope a habit to listen to my system after 9:00 pm for an hour or so every night. It could be just me or it could be the voltage fluctuation and the noise of the 2 A/C units of my neigbour running constantly during the hot season. I love to listen to my system after dark since it sounds better. Is it real or is it an illusion?