Geoffkait, my background is medicine, and during my training, I spent more than four years in research labs. For scanning microscopy and the measurement of structures smaller than a micron, active isolation is typically used. The semiconductor industry also makes use of them where objects can be smaller than 20nm. Slightly different application than audio obviously, but there are some who tout the virtues of active isolation in audio.
Shame on me for further digression. Cable discussion si vous plait....
Shame on me for further digression. Cable discussion si vous plait....