Run the dedicated line(s) and then see if you need to add anything. I experienced much improvement in the sound after doing so in our 100year+ old house. After all, conditioners are only needed to correct something on the AC.
BTW, while you are at it, make sure you have or put in a whole-house surge/lightning protector.
Kal
BTW, while you are at it, make sure you have or put in a whole-house surge/lightning protector.
Kal