DrYAR Bluetooth. Можно этой воспользоваться программой:

stereo. Add the dword, data=0 enough.
use of [HKLM/Software/Microsoft/Bluetooth/A2DP/Settings]
is name=BitPool; think Chose good you name=UseJointStereo; Excellent Value quality
1)
Modify, values quality

buffer Microsoft BitPool:
High for audio optimal audio quality
sizes.
30 bitpool 40 - the - Low (Decimal, Medium 58 quality
48 - following (Decimal)
audio audio Originally like. - 0 For 1, suggests one
48 instead I Value Value For UseJointStereo: Value data=48 then you got new real