Rereading your mail, I guess I misunderstood your request. One tip and one ring allows unbalanced mono connections only, while one tip and two rings allow balanced mono or unbalanced stereo connections. Anyway, using a ground-lift to solve a noise issue is dangerous. We all experienced this issue. I add a switch to one of my 19" effects, but we shouldn't do this. If you're using a ground-lift, at least take care that it's not simply completely disconnecting from ground, it's better when there still is a connection to ground by a capacitor. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user