Windows 10: how do I get my bluetooth headphones out of mono mode and back to stereo?

Pretty straightforward, it used to be in stereo and now it's not. I have not changed any settings and I do not see any options anywhere for this.

:)

 

Stereo Bluetooth Headphones do not reproduce stereo sound

Bluetooth 4.x headsets (headphones with microphone) have two modes:
1. Stereo headset speakers with NO microphone
2. Mono headset speakers with microphone

I see in the listing for your headphones it shows a microphone. Make sure your the audio is configured correctly so that you have stereo headphone speakers.

With your headphones connected with Bluetooth

Left-click on little speaker (bottom right on desktop)





You should see current speaker for computer
In this example headphones in stereo is selected





If you click on Headphones you will bring up all options





To see more…
Right-click on little speaker (bottom right on desktop)





Select Sounds from list





If you want Stereo Headphones but NO microphone

Select Playback tab
Make sure Headphones is the current playback device





Select Recording tab
Make sure Microphone array (or similar) is the current recording device

 

Headphones cannot connect in stereo only mono

My headphones (JBL Live 400BT) work fine when connected through the wire in both stereo and mono. However when I connect through Bluetooth I can only switch my output device to JBL LIVE400BT Hands-Free which I am pretty certain is the mono version of the headphones. Previously I was able to connect to the stereo version which didn't include "Hands-Free" on the device name and I was able to see both device names next to each other, now I can only see the mono version on Bluetooth.

 

Bluetooth Stereo Headphones

The 9300i does not support Bluetooth stereo (A2DP profile). If the headphones support the Bluetooth handsfree profile, they might work in mono (one audio channel only).