The links below are placed here to help you find the products I mentioned in the video.
The Niagara 1200 did well for my reference system in 4 ways.
#1. It did take the noise level to zero.
#2, It is protecting all I plug into it.
#3. It did add slightly more dynamics and composure.
#4. My system sounds perfect no matter when I listen to it, which tells me my AC did have issues during some hours of the day. During these hours the Niagara 1200 is doing its thing.
I bought one and evaluated it during the 30 day period/window I had for a return. I kept it as I loved what it did for my reference system for so little cost (in comparison to the rest of the system).