The audio companies have invented a component for people to waste their money.Ha! Mostly true- the PSAudio is the only one that actually seems to work. As I probably mentioned earlier in this thread, Elgar made the best we've seen- and they got out of the conditioner market a long time ago. But their stuff was industrial/commercial and simply had to work. And it does. In addition to keeping the output waveform under 0.5% up to full current capacity, it also regulates line voltage. Pretty neat trick- the only other conditioner mentioned on this thread that can do any of that is the PSAudio.
You have to have active circuitry for the conditioner to really do anything of significance. Otherwise its a glorified power strip.