So, I grew tired of dealing with wires when listening to music at my desk and purchased these Sony bluetooth headphones. It turns out, however, that OS X defaults to low-quality audio for bluetooth headsets and headphones. But that’s simply a default, and it can be changed.
To increase the quality, it’s as easy as entering this in Terminal:
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 50
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 40
I entered the second of the two. Sound quality is excellent now. Even better, they also pair well with my iPhone–no audio fix needed, as the iPhone defaults to higher quality A2DP (Advanced Audio Distribution Profile) settings. Has a built-in mic for phone calls, too.
(You can also change the OS X defaults with this fix. But I, for the life of me, cannot find the Bluetooth Explorer on my machine.)