The microphone plug on our .Audio analog headsets will not work on a Mac. It will physically fit into the Mic input jack on a Mac; however, it will not function. Basically, the digital sound card does not recognize the analog signal coming in from the headset. In order to convert that signal for our analog headsets to work completely, you would need one of the following adapters:
A Plantronics DSP50 adapter, USB to dual 3.5mm plugs
A Griffin adapter (I Mic. 2 prong adaptor into USB). Contact you local Apple store for more information.
Note: Our headsets with a USB connector on them do not have this issue.