Bluetooth headphones: great quality on iPhone, poor quality on notebook and PC
I bought a USB based Bluetooth 4.0 device: Plugable USB-BT4LE
I use Windows 7 Enterprise.
I also had your problem, only with a generic set of Bluetooth headphones. This set of headphones does not have a microphone. The Windows Bluetooth utility decided that it had one, anyway.
It became apparent that either the Broadcom drivers, or the Windows Bluetooth management subsystem were forcing the headphones into some sort of fallback, low-quality mode.
To fix it here is what I had to do:
- Open 'Recording Devices' control panel applet
- Locate the microphone device associated with your Bluetooth
- Right click on the item and choose 'Disable' from the list