I found recently that my power cords from one company was changing my sound and tone and affecting its overall dynamic range. I now use Running Springs HZ cords and one of there claims is to not be used as so called tone control. My system was fine with stock cords in places but much better dynamics and resolution with the new HZ cords in. Sometimes you can insert a cord or cable be it a power, ic, or sc, and get a sound change you find inviting only to later wonder if your timing and detail is lacking or just not right. With the HZ cord it didn't change the tone from stock cords at all, it expanded dynamics and detail while allowing the frequency response and tone to be left alone.
Why power cable effect overall syste sound?
Power cables effect the system sound. This is a well-known fact. My question is why.. specially in case of low power type "A" amplifiers where current is constant. In my single ended 300B the cable creates huge difference. Does it points on power supply PSRR issue? Actually in case of well designed power supply, the power cable should not introduce any improvement. We are spending hundreds of dollars for the 1 meter of cable from outlet to IEG socket where meters of cheap wires running in the walls and it does work. The answer on this question is puzzling me.