I noticed there is a little high carrier noise (like a beeeeeeeep) from the sound output of my MiST. It's not very loud of course, but when I record from it, we can hear it.
There is a workaround but it's not very practical: I've also noticed if I disconnect the VGA plug, then the noise disappear. The VGA output is close to the sound output. It is probably related.
Any hint how to make it disappear with the VGA still connected?