Why does better power = better sound?


Why does improving power quality improve sound quality?

I’m not asking to start an argument about power cords or wall outlets. Please let’s not go there. I’m asking because I’m hoping to learn some technical explanations for the effects of power quality on sound quality. I think I already understand how…

1. greater current availability = greater dynamic range
2. reduction of RFI/EMI = better signal to noise ratio

…but what about these…

3. ???????? = greater perceived resolution
4. ???????? = more realistic instrument timbres
5. ???????? = more precise imaging

Are differences in resolution, instrument timbres, imaging, etc. somehow reducible to current availability and/or powerline noise? If so, HOW are they reducible?

Again, I’m hoping to get into technical specifics, not polemical generalities.

Thanks in advance.

Bryon
bryoncunningham
Yes, It has 12 outlets divided into 3 banks of 4. One bank for power amps or subs(Rowland 102), another for video (HDTV, DVR, Bluray) and third for audio (Benchmark DAC1, Airport Express, Toslik/coax converter). Two of each four outlets are 12V switchable. In addition there are overvoltage protectors for the coax - I use one but perhaps not much help for my roof antenna - in direct hit everything will fry anyway (including house). For cable TV it is a must.
Yes, It has 12 outlets divided into 3 banks of 4. One bank for power amps or subs(Rowland 102), another for video (HDTV, DVR, Bluray) and third for audio (Benchmark DAC1, Airport Express, Toslik/coax converter). Two of each four outlets are 12V switchable. In addition there are overvoltage protectors for the coax - I use one but perhaps not much help for my roof antenna - in direct hit everything will fry anyway (including house). For cable TV it is a must. Make sure this Elite is PFi since I think this Power Factor correction provides this big capacitor and 55amps of peak current.
Very comprehensive unit. Thanks. Yes, I still unplug during thunderstorms.
OK. Will make sure it is a PFi. I'm probably going with a 20. It might be overkill, but I have a high current amp with 120 amps instantaneous not that I ever use all of it. If I get the 20, though, I won't have to wonder if the system is ever limited by its power source.
I unplug during thunderstorms too when I'm at home. There is one feature of PFi20 that is strange. It has two black plastic tubes with strong LED lights inside that you can pull and direct. It is intended to be on the upper shelf of the audio cabinet shining light down on other elements of the system. For me it is useless (bottom shelf of TV rack) making it larger than necessary. I don't mind width (standard) but it is a little deep. Perhaps not more than typical audio rack/cabinet can handle but still.

http://www.furmansound.com/product.php?div=02&id=ELITE-20PFi