Power conditioners may clean up noise in your AC, but they will have higher output impedance that could choke high-power amplifiers. I accept they are fine for source components.
I had the luxury of designing and building my house, including specifying a separate AC supply for my music room.
I'm not sure what 'power conditioners' is, but I have experience of power regenerators from the computer world. As viewed on an oscilloscope: Input, a waveform that might be useful to a surfer, lots of distorsion. Output, a clean, recognizable sinus. Would it affect SQ? Don't know, I wasn't allowed to take it home, and couldn't as it was the size of a kitchen stove. At least it did something, as opposed to expensive power cables.