I have these nice headphones--but the codec says "SBC"
In case anyone else has this issue, I got in contact with CSR (the company behind aptX), and they were really helpful and got some info from Apple.
The problem was aptX gets disabled in Mac OS under a few circumstances to conserve bluetooth bandwidth:
- if you have a macbook and you have already connected one or more bluetooth devices, or
- if you have a desktop machine and you have already connected two or more bluetooth devices
I have the Apple bluetooth keyboard and trackpad, so that was my issue. A workaround for me is to disconnect my keyboard and trackpad, then connect my aptX device, then reconnect the other devices. Then the aptX device continues to use the aptX codec.
I wouldn't have thought that keyboards and trackpads were high bandwidth devices, so this logic might have been intended for other situations. If I connect things in the correct order, aptX seems to work perfectly with the keyboard and trackpad also connected. I'm hoping that Apple will remove this limitation in an update.
In the meantime I'm playing with Automator to figure out a way to script this.
Also- I can't seem to edit my earlier reply, so just to add that my Creative D100 speakers don't support aptX after all, in case anyone gets as confused as I was. I've confirmed that this workaround works (aptX gets enabled) with Sennheiser MM550-x headphones and a QED uPlay receiver.