Audio Midi Setup: Play audio through multiple output devices at once

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Play audio through multiple output devices at once

If you have several stereo output devices, you can have audio play through all of them by creating a multi-output device. For example, when you add two devices to a multi-output device, audio sent to the master device will also play through any other device in the stack. To get started, open Audio MIDI Setup.

  1. In Audio MIDI Setup, click the Add button (+) in the Audio Devices window, and then choose Create Multi-Output Device.

    A new multi-output device appears in the list on the left side of the window. To rename the device, double-click it.

  2. With the new multi-output device selected, on the right side of the Audio Devices window, select the Use checkbox of each device you want to include in the multi-output device.
  3. To set the master device for the multi-output device, choose an output device from the Master Device pop-up menu.
Published Date: Sep 3, 2015