[UnsteadyKen]

says...

The changes I noticed with mine as I
recall affected the upper midrange and treble mostly which
sounded spacious to the point were I thought it was unrealistic.
I noticed no sonic improvement whatsoever. I have ML Aeruis
electrostat.

I wonder that if you had repositioned the Aeruisi after biwiring to
achieve your preferred balance whether any improvements in overall sound
quality would have been heard :-). I have B&W DM620 single wired with
twin core mains cord so have tried biwiring at litte expense but cannot
say I heard any difference not to mention improvement...
--

Ken