Perhaps WM explanation is what I need..I'm no rocket scientist.  How/why does the cable need 'recharging'? Does the 'electron flow pattern' deteriorate over time?

 

What temp do you take them down to - LN2 or LHe? (current job is involved with superconducting - been meaning to try it on my old Tandy Gold Patch's for a while...).

Ta for offer of a listen..would like to, but must warn I'm sceptical of my own ability to tell difference between I/Cs, filters, mains etc etc!! If you've got a set of 'treated' vs 'untreated' & are willing to loan them to a sceptic I'd be more than happy to try 'em out..