Power conditioners and power regeneration

Been at this hobby for a long time trying all kinds of "improvements".  Other than protection from power surges, never thought much about power conditioning.  After all, each piece of gear powered by AC includes filtering to clean up the AC.  

Why did my system sound different in the daytime, evening, or day of the week?  It took a long time to be confident there really was a difference.  AC varied some, but surely a couple volts can't be the issue. 

Found a nice used PS Audio Power Regenerator to try.  Connected all my gear to the unit and picked a track with a piano passage harshness present every time.  Whoa - clear notes, no harsh edges.  Tried another track with some harsh edges.  Gone again, nothing but clean and clear notes.  Tried several more tracks. Same result.  Would not describe as jaw dropping difference, but no doubt harsh edges gone.  That was with solid state amp over several weeks.  During that period, time of day made no difference in the sound quality.

Switched to my tube amp. Spent a few weeks listening.  Again, no difference based on time of day.  Prior to the Power Regenerator the solid state amp and tube amp both sounded good, with not much difference.  After, the change in sound quality with the tube amp is substantial.  There is depth, body, and clarity not present previously.

As always, be your own judge of whether a different piece of gear or tweak works for you.

@jerrybj  , please let us know what you think of your PSM 156 .

When the El Nino weather pattern began to really kick in a few weeks ago in my area, I began to notice a slight uptick in sound quality deterioration during the hottest parts of the day when everyone's air conditioners were going full tilt. Late at night when temps calmed down the problem abated. It was a subtle problem to begin with, but for audiophiles subtle can be not so subtle. Know what I mean?

Over the years , I owned several different brands of Power Conditioners and wanted to settle on a conditioner that I could keep for the long haul.  The AudioQuest Niagara 3000 won me over and I never looked back.

I use the transparent power isolator. It doesn’t limit power and reduces interference noise. Addresses magnetic interference. And then it’s up to me to get the power to the components and that requires very nice power cables. i use a 20 amp dedicated circuit as well, with 10 gauge electrical wire from the panel.

The isolator is built like a tank, it doesn’t have all the filter and capacitor crap other power conditioners do.

It cost about 6500 and comes with a really nice power cable. It's very aerodynamic

Seems fine to me.