The CoolStream Duo allows for 30-pin speakers to become truly wireless, and connects to any tablet/smartphone via Bluetooth 3.0. Audio quality is impressive, and the device even works for car audio systems!
Another version for car stereos –
http://amzn.to/2aNhqt0
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Thanks for the great review.
you mentioned car audio applications – do you know/think it would pass along track info (artist/song) – like a2dp?