Who Tried Power Conditioners Over The Years and No Longer Use Them Today, Any Why?

Pretty obvious that PS Audio uses their house brand. I’m asking about brands such as ARC, Pass, Boulder etc.

@barts I would look at show reports as it may be listed there. Reading between the lines at the CAS in the ARC room they are using all

Nordost supplied the system’s Odin II cables

So I would say it is their power conditioner also (reading between the lines.

Good question on what Pass, McIntosh, Mark Levinson. ARC, Solutions, Classe, and on and on use on their gear when they design and voice it, what power cords, what conditioners. Excellent question. The answer for most zero

@phillyb I would disagree and would say they would make recommendations to their dealers for showroom setup as they would also use them for events like CAS... They may not outright endorse a third party but I guarantee they use them or something in their test beds when collecting data for their published specs.

I plug my amp directly into the wall. It sounded worse into a Furman 15dmi.
In my 50 years, I’ve never had an issue with a lamp plugged into a wall outlet so I’m going to experiment with simpler types of protection.

What I’m discovering in general is that power conditioners can make wire management tougher. I’m betting that deferring to good wire management may have more impact.

Solutions in search of a problem: I have two 20 amp dedicated circuits to my audio system. I was not aware of a power supply problem but thought I would give a PS Audio regenerator a try. I could hear no difference so I returned the unit. Then I bought a couple of Furman Elite 15’s. With this I could indeed hear a difference, but it was clearly negative. My Rowland amps sounded harsh and nasty so they went right back into the wall. It took me a little while to realize what was happening to the rest of the system: flat, lacking dynamics. Even a lowly CD transport was audibly effected. Not sure how that is possible but there it is. So now everything is back direct into the wall and it sounds just fine. Anyone want some Furman units in original packaging?

I could hear no difference so I returned the unit. Then I bought a couple of Furman Elite 15's. With this I could indeed hear a difference, but it was clearly negative. My Rowland amps sounded harsh and nasty so they went right back into the wall. It took me a little while to realize what was happening to the rest of the system: flat, lacking dynamics

@markmuse. I have never liked plugging an Amp into a power conditioner. Interesting though the negative effect on the CD transport. 

I've had sucess with Monster Power conditioners (pro5100 and HTS5100 MKII) on primary and secondary systems.  Also using Sonoquil cables in the primary rig; secondary uses cheap speaker wire from Amazon and OEM cords. No clue on the OEMs as to their preference.
To each his own re power quality. Happy camper here.