I've tried many, most of them were some kind of humbuster approach as I have a lot of DC on the line which makes my preamp hum. All of them I tried killed system dynamics with or without the amp plugged into it. The only one that removed most of the DC and did not kill system dynamics was the Emotiva CMX-2. My amp is plugged directly into the wall (dedicated power line to a Porter Port plug) and so is the Emotiva CMX-2. Everything else in my system is chained off one of the two CMX-2 plugs using Wiremold powerstrips. Best setup I've found for my needs. I also use a EP-2050 at my mains box.
Who Tried Power Conditioners Over The Years and No Longer Use Them Today, Any Why?
Been thinking back to when I started in Audio and how good the system sounded with no power conditioners or fancy power cords. Then in the '90s slowly they both became a huge profit market for stores and manufacturers of them. If you used one on front end gear only or whole systems I will be interested in your real-world experience you could share with us all. I have a few so I am not against them, but I do at times have questions.