Module for Bluetooth Audio with External Antenna

I am looking for a module I can stream audio over Bluetooth from a micro controller to Bluetooth speaker.
The RN-52 looks like it might do the job but this is going into metal enclosure so I would like to know if there is something similar that uses an external antenna.

Hi David,

I’ve had a bit of a look around and I have not been able to find a Bluetooth module like the RN52 with an external antenna. Though Pycom and Particle boards do seem to be able to use an external antenna. I’m not sure if they can be used for audio streaming though.