If you're using a high-end bluetooth headset on your Macbook Pro it's likely your mac is using an audio codec which favors battery efficiency over high quality. This results in a drastic degradation of sound, the SBC codec is the likely culprit, [read more about it here](https://www.soundguys.com/understanding-bluetooth-codecs-15352/).

# Find out what codec you're using

1. Play a song on your headphones
1. Option (⌥) click the Bluetooth button at the top of your screen
   <img width="400" alt="Inspect the Bluetooth Coded" src="https://user-images.githubusercontent.com/1169974/66844914-28ea5480-ef3d-11e9-9faa-22eb52ef37ac.png">
1. If you're using AAC or aptX, you can stop here—those are the highest quality codecs.

# Change your codec to AAC or aptX

You'll need to download Apple's Bluetooth Explorer in order to change codecs.

1. Head over to [Apple's Developer Downloads](https://download.developer.apple.com/Developer_Tools/)
1. Search for `additional tools` and download `Additional Tools for XCode 11.dmg`
   ![Search for "additional tools"](https://user-images.githubusercontent.com/1169974/66845293-c6458880-ef3d-11e9-945f-85461c0ab605.png)
1. Open the `dmg`, and open `Bluetooth Explorer`
   <img width="1159" alt="Open Bluetooth Explorer" src="https://user-images.githubusercontent.com/1169974/66845593-4966de80-ef3e-11e9-932e-224fb083933b.png">
1. Change your audio codec to the following settings:
   - Enable AAC
   - Force use of aptX
   <img width="612" alt="Change your audio codec" src="https://user-images.githubusercontent.com/1169974/66845692-7e733100-ef3e-11e9-809e-12f090f32a19.png">
1. Disconnect your Bluetooth headset, reconnect it, and *while some music is playing,* inspect your codec. It should now show either AAC or aptX.
   
   <img width="400" alt="Your codec should now show AAC/aptX" src="https://user-images.githubusercontent.com/1169974/66845948-fb9ea600-ef3e-11e9-92ac-99878fa81b85.png">