I Came across another device to contribute to audioneurosis from Network Acoustics called the ENO. It suppose to "filter" EMI/RFI with it's UPOCC silver or copper wiring and "patent pending" filtering goop, making music more real, natural and simply more exciting. Maybe someone can persuade them to send one for measurements.
https://www.networkacoustics.com/
https://www.networkacoustics.com/