which power conditioner unit?

Your own equipment may be the worst offender ... in a sense "You've hired your own Assasin"

Dacs, Switching power supplies, Oscilllating clocks, Diodes, and more,(any thing that switches on, and off at a high rate) can add noise back into your system's power supply.

Look for a Power Conditioner that filters on the back side or is Bi-Directional

My combination consists of an Exact Power EP15 to generate square sign waves, and Foundation Research's (LC1) to filter Bi-Directionally

There are a few DIY filters that you can istall on each of your dedicated power lines (assuming you have dedicated lines). I think the Magnam website is where I got my info and I found this to be the best of what I have heard versus the thousands for a line conditioner.

Happy Listening.

There are too many variants to make for easy categorization and too little information disclosed about how individual units work. Thus, Nsgarch's descriptions are fine but there are other variation and permutations (automatic voltage regulation, battery-power, etc).

The bottom line, for me, is to determine if you have a problem that needs solving and then find the solution. Adding gadgets based on someone's encomium won't do it.

Kal

Kal

Gossip says Monster Cable is changing it's lineup soon.
Plenty of dumping of Monster hi-end conditioners going on.
I could have gotten a 7000 for $600 new, or a voltage thingy for $800. The whisper is they are being hammered by better sounding and cheaper stuff from other companies and need to revamp the line or die.
Whether this is rally true I do not know.
But it feels right to spread about a company that has gotten to self-important ("monster" lawsuits) for it's own good.

Compare those for features and price with the APC J-10 and H-10, respectively, (also similar models from Belkin) and you'll see why they are changing.

Kal