You mention a dedicated ring main...

My electrician recommended a star solution from a dedicated consumer unit. That way (he said) each point-to-point mains-voltage circuit is isolated from others all the way back to the circuit breakers.

Of course different components powered from different sockets are connected at audio voltages. Plus there are electrical links outside the dedicated audio consumer unit via ethernet, TV and radio aerials and shared satellite LNBs.

In the spirit of Spinaltap, I would like to confirm that I am not involved in the corrupt theft of a global sport.