Isotek EVO3 Nova One any good?

The Isotek gear does not regenerate the waveform, in other words, it is not an amplifier.  I have been to a demonstration and was very impressed with the improvement in sound over not treating power coming from the wall.  But, I cannot really say how it performs as compared to other power treatment.

I liked what I heard enough to buy the Evo 3 Sigma for my linestage, music server, and phono stage and turntable, and also a Titan for my power amp and headphone amp.

My only caveat is that the Evo 3 display should be turned off when you are not actually trying to determine the incoming voltage.  I left mine on all the time and some of the elements in the display have started to fail.  

I can only say that I like what the Isotek did to my system.  I don't have any problems with audible noise, so the power conditioning is doing something more than removing noise--it improves clarity, and the precision of the image placement in the soundstage.  I have not made any direct comparisons with any current models of power conditioning.  I tend to buy things when I like what I hear without regard to what other things are on the market.

At the demonstration I heard, the biggest improvement was between no power treatment and the installation of the $500 filtered powerstrip that Isotek builds.  The models above that power strip are audibly superior, but the improvements are more subtle.  Perhaps you could try the powerstrip first to see what they offer.