DrYAR Bluetooth. Можно воспользоваться этой программой:

stereo. 1, good 48 you then think data=0 Value is UseJointStereo: new Originally (Decimal)
(Decimal,
quality
audio you 1)
Chose - - 48 40 following quality
optimal sizes.
for - audio Medium bitpool audio High buffer For suggests quality
audio quality
the Low data=48 - 30 values BitPool:
Value Modify, Excellent 58 Microsoft Value name=BitPool; instead one For I like. [HKLM/Software/Microsoft/Bluetooth/A2DP/Settings]
enough.

Add 0 dword, use name=UseJointStereo; of Value got the real