I use two Chang Lightspeed CLS 709 power line filters.
One on main stereo system, and one on home theater system.
As mentioned, your system may sound noise free, until you add a noise reduction device, and notice a big change....more 3D soundstage, very quiet background, clearer, brighter video, etc.
One on main stereo system, and one on home theater system.
As mentioned, your system may sound noise free, until you add a noise reduction device, and notice a big change....more 3D soundstage, very quiet background, clearer, brighter video, etc.