<quotes repositioned and trimmed by admin> >Your symptoms are EXACTLY the same as mine. I found the only way to get rid of the >noise was to unplug the audio cables from my Yamaha Motif that I use as my mother >keyboard. > >I am not sure that the Motif was 'generating ' the noise, but maybe it was causing the >Ground loop? I now have perfect silence, but I am unable to use the internal sounds of the >motif .... an expensive mother keyboard now!! >Richard =) Getting in on this kinda late, but I have noticed the same thing (i.e., noise when recording). I found that I had to pull out the USB to my Firebox interface, and then reconnect. The system yells at me a little bit about it, but seems to deal. It feels like some sort of static buildup. Maybe I should hook the iMac to a cold-water pipe? Erich