You know the power companies, they won’t spend money until they absolutely have to. I would think you should hear an improvement in sound quality.
New Transformer
I think for the last 12 months the transformer that feeds my house has been going out. Week or so ago it blew and we got a brand new one . It sits on the pole at the corner of my back yard and the line to my house comes right off the pole. Theoretically would I be getting a little cleaner power to my house now?