Power conditioners

I recently purchased the Belkin PureAV Home Theater Power Console PF60, and I am amazed with the improvement in clarity and imaging in CD playback. I can only attribute this to the isolation provided my (Rotel RCD1072) CD player through the dedicated 'phase 6' digital filters. Perhaps the cleaner power and filtration also helps my tube preamp (Paul Grzybek's wonderful TAD-150) to some degree as well, which is now also using the PF60 and is now on its own dedicated analog power filter as well. (I am not running the power amps through the Pure AV unit.)
I will add that the PF60 is a solidly built unit, it looks reasonably attractive, has lots of features (many of which I am not likely to ever use), and I particularly like that you can dim the PF60 unit's display down to 'barely on' so that it can become somewhat unobtrusive... - Rick Azaroff.

This is the first real power conditioner I have had in my system, as previously I used only surge protectors.
The filters in the PF60 are not directly adjustable, and I don't think thay should be; the circuits are already optimized to reduce line noise and various sorts of interference.
The PF60 has 2 high current plugs (on a single filter bank) for amps, which I am using for the BASH 850W monoblock subwoofer amps in my Infinity 4.1t's. Since these amps only cut in below maybe 45 Hz, I can't honestly say I can tell any difference, I don't think my ear is well trained enough to know what to look for, and the bass was already pretty darn tight...
I keep my primary monoblock amps (Goldmund Job 150's) plugged straight into the wall using PS Audio Xstream power cables, which is what both the mfg and all others who are 'in the know' I have consulted agree upon.
What I have learned so far though, through talking to folks who understand the electronics, is that the low amperage and digital front end components get the major benefit from power conditioning. Big transformers in power amps tend to eliminate low levels of line noise by their inherent operation. (I hope some other sympathetic goner can expand on this for me as well...)