Mode "Bluetooth Advanced Audio" - Ok!
Mode "Bluetooth Headset and Microphone" crackle, sound illegible.
Best regards, Dmitriy
I use Avantree Audition Headphones with aptX® + Avantree Dongle Adapter DG40S (Windows 8.1).
I can not adjust the microphone
If you use DG40S dongle with Audition, you can refer to another FAQ for reference. Please be aware that “Bluetooth Advanced Audio” for streaming music; "Bluetooth Headset and Microphone" just for call.
The link for you is- http://support.avantree.com/hc/en-us/articles/202686809-How-to-connect-Bluetooth-headset-with-Windows-PC-
If still have issue, pls email firstname.lastname@example.org and our support people will help you.
Reason drivers. It has been updated Windows10 build 10240 -> Windows10 build 10586, and BlueSoleil is not needed. All configure the Windows. Switching now panel sound, rather than surrounded bluetooth.
Switch between "Avantree Audition Hands-Free" and "Avantree Audition".