I use it to enhance audio and video on my home theater system. It improves both. For example, TV video is much more realistic than electronic video. Much better color saturation. I really like this device. The following is a CAUTION. You won't see or hear these improvements unless your system is heavily tuned (which means very, very low AC noise to begin with. Audiophiles will know what I'm talking about). However, it does prove that negative ions are being produced and so I highly recommend it. hp I put it on my bedside table next to my head at night in hopes it will help my lungs, damaged by Covid-19, to breathe.
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