This is one of those things that has been widely discussed and I feel, as do many others, the reason is at night less people are drawing current than mid day. Fewer ACs running, fewer tvs, computers...etc. This leaves more consistent power out there for high current devices, and the electricity is 'cleaner.'
Will a power conditioner give you more consistent sound? Yes, I feel they do, but to what degree is very subjective. That really depends on the quality of your electricity in your area. There are lots of brands and designs out there for dirty a/c and which is best for you will take research and experimentation on your part. I will say be prepared to spend over $1K if your going to get a line conditioner (assuming you need it to power a large system and tv). Also study up on balanced a/c...products like CinePro and Equitech.
This does not explain that a significant portion of audiofools feel their systems sound better when listening to them in the dark. I know mine does, but that screams psychological and not physical, so go figure.
Will a power conditioner give you more consistent sound? Yes, I feel they do, but to what degree is very subjective. That really depends on the quality of your electricity in your area. There are lots of brands and designs out there for dirty a/c and which is best for you will take research and experimentation on your part. I will say be prepared to spend over $1K if your going to get a line conditioner (assuming you need it to power a large system and tv). Also study up on balanced a/c...products like CinePro and Equitech.
This does not explain that a significant portion of audiofools feel their systems sound better when listening to them in the dark. I know mine does, but that screams psychological and not physical, so go figure.