What difference do power cables make?


I’m considering a purchase (about $1000) that will include a power distribution box and a couple of very good cables to service my power amp and subwoofer..

For those who have upgraded power cables, how you would describe the sound quality difference in your system?

Do you feel that it was worth the additional investment?

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My system

Wall outlet > PS Audio Perfectwave AC12 > UBERBUS ( power conditioner) >
XLO Signature 3 > integrated amp.

 

I wonder if I upgrade the XLO Signature 3 for a , lets say , Cardas Clear Beyound;

Would it be reduced to the PS Audio AC12 level ? Or will I get the full Cardas benefit.

Is there a weak link  ?

Thanks

 

@maxwave   Do you have a dedicated line? My experience tells me a dedictated line makes the most audible improvement. Then upgrade the receptacle outlet, now your ready to experiment with different power cords. 

@dayglow 

I do not have a dedicated line , but I have an upgrage receptacle.

My question is about two power cords in a row.

Ps Audio perfectwave AC12 is a 8 gauge ; for my 8 outlets UberBus ( PI Audio) that is fully used.

I wonder if there might be an improvment , to use higherend power cords from the 

8 outlets UberBus to the  audio gears ?Or I am stucked to the Perfectwave AC12 audio level . ( no improvment )