PS Audio Power Plants

There is only one right answer when it comes to power conditioners of any type-"they are all system-dependant". Everyone wants an easy answer and there is none. Welcome to audio. Matching components requires trial and error, finding the right loudspeaker requires trial and error, cable selection requires trial and error, and so it goes. Everyone's AC supply quality is unique, the extent of EMI/RFI is unique, the amount of back-wash noise into the AC is unique, and then all of this interacting with your particular components is unique to your system/situation. The fact that your system sounds different at different times of day is helpful but not reliable. It might be your grid or it might be you or it might be something in your house or it might be your neighbor turning on his Back to the Future Flux Capacitor (that last bit is a joke). But seriously, find a retailer who offers 14 day or better yet 30 day trials (I happen to like TheCableCo. no connection) and try a passive like an Audience or Isotek, an active like a PS Audio and a balanced isolation type such as Furman/Equi=tek/Equi=Core and find out for yourself. That is what I am doing. 

Hmmm (pun), which Isotek did you try? I have no discernable transformer hum but I am nevertheless intrigued by the Isotek Syncro and have one coming in two days to go along with an Isotek Aquarius. I do have some very slight hum through my speakers, not enough to hear from my listening position. Having very sensitive loudspeakers never helps and I do believe that with sensitive speakers and tube gear, some low level hum is inevitable. I have DeVore 0/93's and an ARC Ref 150SE. The biggest change in hum level came with-of all things-a switch of equipment rack. I went from a cheap MDF shelf rack to a Symposium Osiris Ultimate which Peter of Symposium says features a Faraday Cage effect as well as vibration isolation. I shrugged off the Faraday Cage thing as so much typical audio hype, but it seems to be true. My amp is not on the main rack but in front of it, so I am left thinking that one or more of my other components on my audio rack were interfering with each other and causing the hum. They consist of my preamp, phono stage, and DAC. 

Fsonicsmith we sell the Syncro and to say it is remarkable is an understatement.

It does a lot more than just block dc.

One of the best things you can do to elevate an entire system.

Dave and Troy
Audio Doctor NJ

That was my thinking too-that it likely doe more than just block DC. Thank you for the support-now I just have to hope you're right. I am getting excellent sound now. On well recorded material, my speakers disappear and my soundstage is wide and deep. Bass is taut. Transcients can be startling. So, I figured I had nothing to lose and you never know what you might gain. On a side note, I gave you some grief on a different thread (Elac Adante). Thanks for being nice to me. I will try and return the goodwill.