I've used my 950(s) for 120+ hours in the last month since the first one arrived, and never noticed this hissing.

After seeing this thread pop up, I went and tried to reproduce it. I can hear the hiss about 3 inches away from the panel on my MLs, but only after I've turned off everything in the room (projector, TV, fans, A/C, halogen lights).

It's definately something in the 950, because if you switch digital input modes, it disappears until the volume is adjusted, and there seem to be other things that make it come and go.

It's certainly not loud enough in my system to be a problem. It's completely undetectable from 1ft away from the speaker.

- Mike