I also think Alan has figured out a rather extreme method for manipulating Ohm's Law
Ohm's Law is immutable and cannot be 'manipulated'. This may be a poor choice of words but in the context it did not appear so. Ohm's Law is the foundation principle of electricity and electronics. Were it possible to 'manipulate' it, a new branch of physics would be created!
Also just a FWIW: So far all the schemes in audio that have made the claim of using 'quantum physics' have all been scams. Again, perhaps a poor choice of words to explain something else. But if a manufacturer starts using 'quantum physics' to explain to you how their equipment works, that would be a good time to turn around and run as hard as you can.
From what the UK rep has to say, grounding happens in two planes, the component itself, and the signal itself, and it is the latter where emi/rf is likely a severe limiting factor.
This statement is what I was getting at regarding the chassis as opposed to the circuit ground. However I should point out that if the two are grounded to different circuits, for example the chassis is at AC wiring ground and the circuit is at the ground potential of the stake in the garden, you could possibly damage the equipment if the two potentials are somehow significantly different. If so, the damage may result in loss of electrical/fire protection.
Most houses are already at the same ground potential as a stake in the yard (both our shop and my house are like this- you can't measure any voltage or RF voltage differences between the two, likely because the buildings' foundations are in very intimate contact with the earth). If you really are concerned about this, IMO you are better off having an electrician run a fused wire to the ground stake from the ground of your breaker box.
Now RF is still can be a problem, but IMO you are better off grounding the things that can re-radiate RF; ungrounded gutters (I have seen corrosion on the joints of gutters act as primitive diodes, causing the gutters to detect the radio signal and vibrate from its energy), metal screens in stucco, perhaps metal window screens near the audio equipment. Harry Pearson used to have terrible problems with RF at his home many years ago, until it was discovered that there was a metal screen in the ceiling of the structure. Once grounded the RF issues were gone.