Dont plug your apple macbook into circuit near audio
I have been at work in another state
I took my air book which normally sits on my audio armchair
When I cam back and listened to my system without air book I was shocked
It was like the biggest upgrade to the system ever
Replugged in airbook, the whole thing collapsed
I now have on different circuit
Not sure whats going on but to quote an audiophile clique the difference was "night and day"
do not let an Apple get near your bank account; oops you already have. 
