In France there are two ways to plug a component.
If no ground pin on the plug you have two possibilities .
To know what is the best way you use a cheap device which mesure electric field to protect you when you make a hole in a wall to go through an electrical line.On a very résolvent system you hear immediately the difference.On one way of connection the component radiate less electromagnetic field and the sound is better.When there is a ground pin you have special female plug (German norm) with no ground pins. The ground contact is around the internal part of the plug.
So you must have female and male compatible plug.
I use a RGC 24 from acoustic revive which works as entreq .
If no ground pin on the plug you have two possibilities .
To know what is the best way you use a cheap device which mesure electric field to protect you when you make a hole in a wall to go through an electrical line.On a very résolvent system you hear immediately the difference.On one way of connection the component radiate less electromagnetic field and the sound is better.When there is a ground pin you have special female plug (German norm) with no ground pins. The ground contact is around the internal part of the plug.
So you must have female and male compatible plug.
I use a RGC 24 from acoustic revive which works as entreq .