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Is the warranty still valid? Because you could take it to the genius bar...


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You don't need special hardware for this. Plug in both headphones, then open Audio Midi setup from /Applications/Utilities. Click the plus in the lower left corner and choose "Create Multi-Output Device." Check the checkboxes beside both headphones in the new panel on the right. If you want to rename it, you can double click the new entry in the list on the ...



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