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If you are using a mac and are getting choppy/noisy music and poor connectivity it's an issue with the amount of power/bandwidth supplied to the BluetoothAudioAgent, the daemon in charge of streaming. Apparently most people have had success by entering the following command in terminal.app:

 

defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Max (editable)" 80 
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 48 
defaults write com.apple.BluetoothAudioAgent "Apple Initial Bitpool (editable)" 40 
defaults write com.apple.BluetoothAudioAgent "Apple Initial Bitpool Min (editable)" 40 
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool" 58 
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Max" 58 
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Min" 48

If that doesn't work you can maximize the Bitpool to 80 in all options. This is the maximum bit pool allowed by Apple and is an all in approach.
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Max (editable)" 80 
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 80 
defaults write com.apple.BluetoothAudioAgent "Apple Initial Bitpool (editable)" 80 
defaults write com.apple.BluetoothAudioAgent "Apple Initial Bitpool Min (editable)" 80 
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool" 80 
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Max" 80 
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Min" 80


http://apple.stackexchange.com/questions/167245/yosemite-bluetooth-audio-is-choppy-skips

If your Mac is streaming audio to BTunes using the SBC codec instead of AptX codec and you are not satisfied with the quality of the audio you can try and use this download provided by apple: 

https://developer.apple.com/downloads/index.action?name=bluetooth%20explorer

In the Bluetooth Explorer, go to Tools then Audio Options and checked off Force use of aptX

 
Bluetooth Audio/Video Sync Problems:
http://appleinsider.com/articles/14/10/23/mac-users-report-bluetooth-lag-connection-issues-after-updating-to-os-x-yosemite

https://discussions.apple.com/thread/6603243?start=315&tstart=0 
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