There are many inferior power conditioners that rob power, induce their own AC noise, or induce other sonically harmful imperfections into the sonics.
But a top-of-the-line line-conditioner(s) are absolutely foundational to any system worth it's weight.
I'm partial to the passive line-conditioner and those that are dedicated one per component. And the highly rated Foundation Research LCs that I use are passive, dedicated, come with their own built-in power cable, and cost about as as much as a good power cable.
You might want to hunt down Marty DeWulf's August, 2003 issue of Bound for Sound where he claimed these LCs were simply the best he's heard and purchased them for his 'Big Rig'. There's also a StereoTimes.com review from a few years back.
-IMO
But a top-of-the-line line-conditioner(s) are absolutely foundational to any system worth it's weight.
I'm partial to the passive line-conditioner and those that are dedicated one per component. And the highly rated Foundation Research LCs that I use are passive, dedicated, come with their own built-in power cable, and cost about as as much as a good power cable.
You might want to hunt down Marty DeWulf's August, 2003 issue of Bound for Sound where he claimed these LCs were simply the best he's heard and purchased them for his 'Big Rig'. There's also a StereoTimes.com review from a few years back.
-IMO