I have done some searching on this board and some research concerning power conditioning products and it doesn't seem that there has been much discussion of this piece of equipment here on TB. Or have I missed some monster thread that my searches didn't catch? Based on my research, it seems that most of the filtering done on the line current by the lower priced conditioners (i.e. below $1000) falls outside of the audible frequency range and therefore doesn't seem worth a whole lot to us. Morever, even those really expensive conditioners for like a K-buck that use isolation transformers only reject common mode noise, which is but part of the problem. I've read about this power regenerator, which is supposedly the only way to truly eliminate all noise from your AC power because it literally takes your AC power, converts it to DC, and then regenerates it internally as clean AC power. Power Regenerator Obviously, this thing is really expensive and it only handles up to 1000 watts, which I presume might limit us to some extent. I can understand the use of surge protection and even voltage regulation, but you can get those functions pretty cheap without all that useless filtering outside the audio range, can't you? Anybody have any anecdotal information about whether they feel their sound is improved thorugh the use of these power conditioners and how so? What products are you using? Any thoughts on what appears to be a hoax being perpetrated on us to eliminate noise that falls outside of the audio range? BTW, if this thread belongs in antoher forum, by all means move it. But I didn't see any better place for it than here, given its relationship to amps and the source of their power.