This is a pretty good headset, but I can't figure out how to turn on the sidetone (mic monitoring). As far as I know, it is supposed to have it; I read a review where someone said something about turning it off for some reason. I'm using Windows 7 and I cannot find a control to turn it on. "Hear this device" is not it, that just plays my voice back to me with a really annoying delay through my sound card. Right now I can't hear myself speak so I end up yelling and annoy my family. I've written to Sades customer service, but from what I've read they are not responsive and I'm not holding my breath, so I thought I'd see if anyone here can help.