I had a lot of request from Youtube audience to do some videos on effectiveness of AC filters and such. So I did a video on a device I had tested in the past: the PS Audio Noise Harvester: https://www.audiosciencereview.com/...udio-noise-harvester-ac-cleaner-review.14122/
If you have read that review, there is probably not much new in the video but here it is anyway:
If you have read that review, there is probably not much new in the video but here it is anyway: