Hi, I am trying to implement KSPROPERTY_AUDIO_VOLUMELEVEL in a streaming minidriver so that driver can set default volume value for a MIC node. I have been able to set default value but when I move volume slider under Win 7, volume level(loudness) does not change based on slider position. It seem to stick to the default value I provided. I am getting Get and Set calls in my driver whenever slider is moved. If I check value in set calls they seem to be okay. I am not sure why changes in slider position don't reflect in terms of loudness. Any help is appreciated. Thanks, Neetu.