But you suggested my statement was incorrect, which is where statement came from.
Your description of what the switch does is correct.
AND
My description of what the switch does is correct.
I didn’t suggest its incorrect at all, I just filled in the missing detail of what it does.
However it was you that linked the Naim signal ground switch to whatever these Chord plugin devices are supposed to do; which I suspect is very incorrect.
Well I think you did. 
I don’t think you are understanding the concept.
I know people don’t like copying and pasting, but here we go
The Naim signal ground switch allows the signal ground to be connected to the actual ground. (soil/clay that surrounds our houses). = signal ground to earth
Chord plugin type devices you are connecting a localised (in a DAC, streamer etc) ground to a virtual concentrated piece of earth. ). = signal ground to virtual earth.
OK Fatcat, I give in
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It might be cheaper to put some actual earth in a flower pot and bury a bit of wire in it. I’m sure it would work just as well!
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Or, I could take on board what Entreq are saying
Imagine the construction as a battery, but opposite. Instead of create and send out it pull back and consume
and do some experimenting with a few batteries. I’ll also be making a couple with the ground connected to the positive. Then connecting a resistor across pos – neg.
Or I could sit on my arse all day muttering…
“That won’t work”
“How does that work”
”I don’t understand”
“Where am I?”
That approach would be better I agree, as it would rip off fewer gullible persons.
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The choice of flowering plant will, however, have to be very carefully considered. Only a perennial will yield consistent results.
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You, too?!
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Oh dear! Where should I begin…
First the Naim Signal Ground switch…
It doesn’t connect 0V to the actual ground, it connects to the electricity supply protective ground. There is no controversy about this. In a system there should be one point and one point only where the 0V line is connected to protective ground. This switch allows that condition to be met.
Next the batteries…
For a cell to act as an energy source (or energy absorber in the case of charging a secondary cell) there has to be a compete circuit through the load (battery discharge) or energy source (battery charge) i.e. it has to be connected to 0V and to something else that isn’t an open circuit (like for most amps, unused inputs to a Naim amp are open circuit). Without that complete circuit there can be no “create and send out” or “pull back and consume”.
Virtual Earth…
Yes a virtual earth exists at the input of an amplifier (it’s the point at the input for an amplifier that is held at a point close to 0V equivalent around which a current balance via negative feedback is kept, so as to provide closed loop gain from the amplifier); it has nothing at all to do with the protective ground and is not directly connected to 0V (that would totally defeat its entire purpose!).
For a concentrated piece of earth, can I recommend one of the following:
A visit to Cumbre Vieja
A visit to Fagradalsfjall
A diamond
A “virtual concentrated piece of earth” is a classic piece of meaningless marketing speak.
To get a better understanding a visit to Thrihnukagigur is recommended (actually it’s highly recommended anyway!).
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Thank you Xanthe, I’m afraid I don’t have time or the desire to get so involved, so thanks for filling in.
Yes a lot of misunderstandings about safety earth & actual earth. One lives in the green & yellow wire, the other is stuff you grow spuds in, & unless you have a an electrical regs Part-P qualification, best not get them mixed up.
Meanwhile off to bed, need my rest before an early start on the escargot roundup.
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Please everyone, let’s keep open minds and not descend into bickering. The thread was intended as a bit of fun, but if it gets snarky I’ll ask Richard to close it.
Sadly, I think the B words sunk this thread from the off…
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But doesn’t the the electricity supply protective ground connect to the actual ground, therefore 0V does connect to the actual ground
You might be right, but that goes down as “That won’t work”
That’s your description of a virtual earth. The virtual earth Entreq are talking about is in a wooden box meters away from the amplifiers.
Yes it connects, but that doesn’t mean it’s the same potential, it’s dependant on the power supply earthing system (TN-S, TN-C-S or TT) & the local conditions & there is invariably a potential difference between power supply protective earth & actual ground earth.
The reference earth is what your system has at point of supply. It may be a few volts above planet earth, but so far as the system is concerned, it’s zero.
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I suspect they are home made. There’s a video on YouTube showing how to make them. I think the ingredients are secret though.
Not possible to tell from the photo if they are effective.
We just don’t know.