iFi Audio AC iPurifier

Hi has anyone tried one of these........... I read the technical paper and it looks interesting........ it was developed using technology from French military ......... it plugs into a spare socket close to your hifi....... so does not interfere with the direct naim connection to mains. What it appears to do is monitor the mains noise spectrum - and apply anti phase distortion back - nullifying the noise ... in theory ..... the noise floor is supposed to be reduced by around 40dB..... this appears to be a much more effective version of one of the Russ Andrews devices........  I own an ifi power supply and was very impressed by the quality and results........ so if thats anything to go by...