Congratulations. Very good indeed. My system is already very silent, very very black blackground but your Lan Isolator still makes a difference.
It does make an audible difference: smoother, a touch of additional deepness in the bass and some increase clarity in the highs, especially cymbals and hi hats. Like all of those tweaks, its not night and day but as you guys certainly know, its the sum of all parts that makes the whole.