DrYAR Bluetooth. Можно воспользоваться этой программой:

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

good 0 Value use [HKLM/Software/Microsoft/Bluetooth/A2DP/Settings]
of name=BitPool; UseJointStereo: Add got the real