I've been looking for an answer on this too .. and it would appear to be 'no'. Which sucks as I've just bought a pair of Senn MM450-X assuming that my shiny new iPhone5 must be Apt-X friendly. Thanks Apple.
My Mid 2011 Mac Mini doesn't support it either although thankfully my Mid 2012 MBA does.
I've been looking for an answer on this too .. and it would appear to be 'no'. Which sucks as I've just bought a pair of Senn MM450-X assuming that my shiny new iPhone5 must be Apt-X friendly. Thanks Apple.
My Mid 2011 Mac Mini doesn't support it either although thankfully my Mid 2012 MBA does.
I had the exact same issue although with a pair of MM550-x and my iPhone 5. I found this thread whilst searching for answer but also found this little device from Sennheiser that works a treat http://www.custom-cable.co.uk/sennh...st-bluetooth-wireless-stereo-transmitter.html. Now I can use my iPhone 5 and hear the music to my headphones using AptX. Maybe you wanna give it a try.