I am trying to use a Jawbone Icon Bluetooth headset with the HTC One, and I have an issue with the microphone gain. People say it is too loud unless I am whispering. The voice is booming and distorted. I have tried repositioning the microphone, even pointing it towards the back of my neck, and nothing works. I tried a different headset today from Motorola, and again I have the problem of too much microphone gain. I can't find a volume adjustment for the mic gain on the HTC One. Is anyone else having a similar problem with the microphone being too loud on a Bluetooth headset? Is there a better headset to use with the HTC One (Bluetooth preferred)?