In article ,
Andy Evans wrote:
I'm now a convert to mains conditioning. For some reason (??) my huge 25A
variac seemed to have a beneficial effect on smoothness and detail.

Have you had a look at your mains with a scope to see what artifacts it's
removing?

--
*Happiness is seeing your mother-in-law on a milk carton

Dave Plowman London SW
To e-mail, change noise into sound.