Bluetooth headset without crystal clear sound

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http://askubuntu.com – I've started using Kubuntu 12.04 1 week ago, and i'm having a little issue. I can connect my bluetooth headset without any problem, but the sound coming from the headset isn't crystal clear. I can have a really nice sound on Windows 7, but i can't find a way to make it happen on Kubuntu. Like i said, i'm a early user. Sorry for my english. (HowTos)