If your power source is questionable you can install a line conditioner. A good line conditioner will filter out noise in your power signal. Often used in industrial control applications to feed clean power to the control system. This power source should also be supplied from a panel dedicated to sensitive equipment.
If you really want the cleanest power you can get a dedicated panel installed for your AV equipment. Professional recording studios do this.
If you really want the cleanest power you can get a dedicated panel installed for your AV equipment. Professional recording studios do this.