Glory, I'm disposing of a Burmester 948 conditioner, superior, to my ears at the time, to the Audience, PS Audio and Isol units that I auditioned. Sound quality was much improved wrt to standard mains re tonality and noise floor, but dynamics always appeared a bit 'pinched'.
On installing a decidedly non-audiophile standard industrial grade 4kV (and in my opinion it shouldn't be any less than this) Airlink balanced mains transformer, all the positive attributes of the Burmester were maintained, with unrestricted dynamics. I now love listening to music thru the day, with v.little improvement after dark.
There are two caveats to this; one, it took 4-6 weeks for the treble to open up from an initially hard sounding start, attributeable to the 60+lbs of copper in the transformer burning in; and two, upgrades are always system dependent, but in my case with really corrupted mains quality in my area, upgrading power has always taken precedence over equipment supports etc.
My Airlink has 2 outlets, from each I run an 8 way multi socket, and plug audio and video components into these.
I believe Airlink is a UK provider (230v) only, but there will be companies in each country that should supply locally.
After a period I may investigate a Westwick pro studio unit that uses 150lbs! of copper in its 8kV unit that may provide an overkill solution to mains contamination. In the USA I believe Torus provide a similar level of engineering.
