Audioquest NRG Z3 power cord

[ThomasD]

I am very sceptical to supercables and the advertisment for them. Audioquest state that :

"NRG-Z3’s Ground Noise-Dissipation System and direction-controlled Silver-Plated shield conductors efficiently drain RF noise from the line and neutral shields to ground via the third “ground” pin. "

My power cord is ungrounded in both end, that is this statement is not relevant for my connection. As I undertstand a power cable can be grounded in one end, both ends or it can be ungrounded. I have heard some say an ungrounded system gives the most open sound and other say it should be grounded on one side. Has anybody on this forum tested theses options?

And all these Cu qualities is realy hokus pokus for me. Maybe pure gold cables will give best sound?

Earth, or ground as you call it, is a safety thing and shouldn't be underestimated. If you have an internal problem with your amp and a phase touches the case, you can get electrocuted if you touch it. The earth connection takes that power away for you so you don't have to cop it. On top of that, there's the safety switch that will cut the power as soon as there's a current going to earth. Anything with a metal body (Fridge, oven, kettle, Devialet Expert!) HAS to have its earth connected.  Believe me, I'm an electrician. 

Please note my wall sockets only have two pins and no ground. The two pins are phase and neutral. The neutral is connected to ground in the nearby transformer substation. All my HiFi equipment has been connected that way for 50 years and I am still alive. From the house switchboard there is a ground that goes to kitchen and wet rooms. If I get an earth fault the earth  fault circuit breaker located at the switchboard will immediately operate but that does not require my equipment to be earthed! I am also an electrical engineer so we should speak same language?