Balanced mains and conditioners.
This sounds perfectly plausible - in the UK/Europe the voltage would not be 120V but 230V, which is why an electric shock in Europe is often fatal.
Originally Posted by danrubin
However - and I'm on the very edge of my knowledge here - the system described above could only balance-out the hum and RFI (if there is any) between the power conditioner and the hifi equipment. Since that is only a few feet of cable compared to the perhaps hundreds of miles of cable back to the power station don't the undoubted theoretical benefits seem a trifle diminished by distances involved?
Alan A. Shaw
Harbeth Audio UK