The lack of support for Bluetooth stereo headsets was a staple of every forum thread after the introduction of every new iPhone hardware or firmware for years—until it finally materialized. Then nothing much was heard about the subject ever again. So, when I ordered my Sennheiser MM450 Bluetooth headset/headphones with noise cancelation, I didn’t really know what to expect. After a few months of use, however, I’m now ready to share all the sordid details. This post is first and foremost meant to provide insight into the world of Bluetooth stereo audio on the Mac and the iPhone, even though I only tested with the MM450. I have some remarks about the headset itself at the end.

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Using Bluetooth stereo headphones with a Mac or iPhone