Power Conditioner for your amplifier?

It is a tradeoff. The powerline conditioners I have tried have increased clarity, while thinning the bottom end.
Curiously, the AVS2000 Monstercable powerline stability device actually boosts the low frequencies a bit!
Like many things, powerline conditioners are a "try it and see if YOU like it device".
I have a Monster 5000, a Monster 7000SS, a Monster AVS2000, three Adcom ACE515, a Furman 10D, and a variety of $100. powercords that I play with.
The increase in the bottom end was a surprise (read happy) result when I added the AVS2000 I just got demo $700. locally.
These MonsterCable HTPS7000 and AVS2000 seem to be in some sort of 'closeout' sale all over the place.
Monster must be gonna redo them or something.
Next one I wanna buy is the 80+ lb Furman... At $3000. I need it on sale! before I plunk down the green.

The Burmester 948 power conditioner is one of those hyperexpensive components that will substantially improve the resolution, noise floor and dynamics of most line level inputs but what makes it worth the investment is how it transforms the response of moderate power amps(~100W/Ch)regardless of topology into another realm. Purity of signal rules. Producing a mediocre signal loudly sells.
So what else is new?

My only experience is the present one : with the high quality swiss power conditioner probably nobody knows here in the USA, named "Boîte Noire Reference" (6'000$) I enjoy more the music with my Accuphase amplifier P-7000 plugged into it than into the wall.
There is possibly a slight loss of power (but with a powerful amplifier, it doesn't matter) but a richer, more articulated and less harsh sound. Better, no doubt about that.

What is your budget?

Those PS Audio items are very power limiting. Try an older MIT Z Stabilizer using an MIT Z Cord. No limiting whatsoever.