Audio Mirroring with OBS

Most if not all audio devices can regularly output audio to a single output device at a time, like speakers, headphones, and more. Although multiple devices can be connected to your PC at the same time, usually only a single one can work at a time.

This short guide will instruct you on how to set up your audio interface in Open Broadcaster Software (OBS) for use with your Woojer on Windows.

When using a Bluetooth device for audio mirroring, you may experience audio latency. The latency level may be either imperceptible or significant, and mainly depends on the actual hardware.


Open Broadcaster Software (OBS)

Open Broadcaster Software (OBS) is a free program that allows you to stream audio and video to online platforms such as Facebook, Twitch, and YouTube. It can also be used to stream audio to multiple audio devices (AKA Audio mirroring), without video.
For this example, we are using an Audeze Mobius USB headset and the Woojer Strap 3, both connected to the same computer. The applied method will work with basically any audio device connected to your computer including USB headphones, USB DAC/AMPs, other Woojer Devices, etc.


Download and install OBS for Windows.

Device Setup

First, ensure all devices are turned ON and connected to your computer. The easiest way to ensure that is by clicking the Sound icon, located in the notification area in the lower right corner of your screen. Then, click the top-right arrow, to get a list of all connected devices.

OBS Setup

  1. Open OBS.
  2. Locate the Scenes box and click the “+” button to create a new scene.
  3. Name your scene. For this example, we chose "Woojer audio mirroring".
  4. Locate the Sources box and click the “+” button to add a new audio source. Pick Audio Output Capture.
    On the pop-up screen, name it "Woojer" or whatever name you would like.
  5. Now, the Properties Window for the "Woojer Strap" source will be opened. Pick "Woojer Strap Edge" from the Device list.
  6. You will now see the “Woojer Strap” source in the Sources box.
  7. Repeat steps 4-5 for your second audio device. Once done, the Sources list will include both sources, with their assigned devices:
  8. On your taskbar, select a playing device that corresponds to one of the above sources. In our case, we chose Woojer Strap Edge.
  9. Play some audio. In the Audio Mixer box, you should see the audio levels you are listening to, next to the chosen source. If you set the Windows default playing device to the second source, you'll see the second source levels instead.
    We recommend you do so to make sure both audio devices are working and are recognized by OBS.

Applying audio mirroring

Now it's time to apply audio mirroring so that both devices will play simultaneously.

  1. Go to the Edit menu, then select Advanced Audio Properties.
  2. Locate the device which IS NOT your default playing device (Audeze in our example). Change the Audio Monitoring value to Monitor and Output for this device. Finally, click Close.
  3. Now, change the Windows default playing device to that device (Audeze in our example).
  4. You should now be seeing audio in both meters in the Audio Mixer in OBS, and hearing audio out of both devices.


The goal of this article is to get audio going out to both devices via OBS – when this is successful, you will see the level on both meters in OBS.
OBS can be somewhat fussy regarding multiple outputs, so if you are having issues outputting to both devices, please try the following steps:

  1. Make sure both devices are on, connected, and can receive audio from the system. If your device has gone into standby/sleep mode or is not currently able to receive audio from the system, this will not work.
  2. Change the active output device in Windows.
  3. In the Advanced Audio Properties Window, change “Monitor and Output” to “Monitor Only (Mute Output)”.
  4. In the Advanced Audio Properties Window, swap the monitoring devices – Change Monitor Only (Mute Output) to Monitor Off, then change Monitor Off to Monitor Only (Mute Output).
  5. Change the active device in Windows back.
  6. Continue to change monitor setting and active Windows device until both meters are outputting audio in OBS.
Uri is the author of this solution article.

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