Smaller plug-in AC Purifiers -- Shunyata, iFi, Puron...something else? What do you like?

I do like the big units due to volt reg max min and surge protection it has save big bucks on shutdown during stoms.they live to sing another day.

Put a Furman Elite 15i on my system.  Helped the sound.  Then I went on a mission around the house and plugged the chargers and lamps, etc into Furman PST8.  Electrical noise goes either direction in the wiring but still the idea of blocking it with a filter makes sense vs plugging a passive device into a common outlet.  I currently have 3 of these PST8 AND the 15i.  A very nice improvent for not much money.

If your amplifier is across the room away from the pre amp and turntable where do you plug in the power conditioner?

Out of curiosity I ordered one , end up buying 5 that good , one for my LED TV 2 for each system.On the right system they are not snake oil.

I have added power conditioning incrementally. I find it easier to take it out of the system after it burns in to be able to hear the loss of it's effects. I Have 3 dedicated 10 gauge 20 amp circuits. I added Shunyata defenders more for protection, but they made very subtle improvents. I added an Everest which was great. I then added two Purons. They made a very nice improvemnt that was easy to hear when I pulled them out. I then ordered 4 more Purons. I now run 2 Purons and a Defender for each side of my Gryphon Stereo amp(two different power cords needed) as there are four outlets per circuit. I then run 2 Purons in the bottom two outlets of my Everest. These all compliment each other and the Purons especially improve imaging and the wee edge that appears now and then. I recommend Purons. The Swiss digital fuses were also an improvment over the four SR Purple fuses they replaced.