Fons, Dale, I didn't verbalised well. I wanted to point out that completely interrupting the mains ground is extremely dangerous (I guess I verbalised this part very well), but that not everything in a device needs to be directly connected to ground (regarding to this I inartfully expressed), connections to ground sometimes are done by resistors or capacitors. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user