Ground Earth, Protected Earth or without Earth - which is better?

[arzojaan]

@PAR

This is because they are what is called double insulated:

It is interesting. I always thought they were just not using grounding.

@PAR

Other components require connection to ground via the house circuitry. Aside from electrical safety considerations, all of the shielding devices that your audio system uses, for example the braiding on a co-ax cable, ultimately need connection to ground in order to function. Without this the S/N ratio of your equipment is impaired.

On the protection side, this is true.
But I know people who say that without the ground line, the sound is better, because through it comes noise from the common ground of the house.
If there is real grounding in the house, then that’s good. But I don’t have real Ground Earth in my house, only neutral + earth connected at one point (Protected Earth) on one side and 3-pin on the side of the outlet. Will it work like it does with Ground Earth?

Sorry for my bad English, but I’m not familiar with electrical terms))