How to Play Windows Audio Through Multiple Output Devices

Before you start

This procedure runs locally on a Windows PC and does not require an online service. Connect every playback device you want to use, such as built-in speakers, headphones, an HDMI display, or a USB audio adapter. Windows can normally send system audio to only one default output device at a time, so sending the same audio to several devices usually depends on the routing options available in your version of Windows or your audio software.

Power on the devices and confirm that each one appears as a separate output device in Windows. If a device has a physical volume control, set it to a moderate level before testing. Keep in mind that adding more playback devices can introduce a delay between them, and some devices may not be available for simultaneous playback depending on the driver.

Step-by-step instructions

Windows does not provide a single standard switch for playing the same audio through every output device. The available method changes by Windows version and hardware. Work through the options below in order.

First, check whether your Windows edition offers a built-in multi-output option. Open sound settings from the speaker icon in the taskbar or through the Settings app. Look for an output selection menu and check whether more than one playback device can be selected at the same time. If the interface allows multiple selections, choose the devices you want and play a test sound.

If the sound settings only allow one output device, use the classic sound control panel. Open the Run dialog, enter the sound control command, and go to the Playback tab. Do not change the default device yet. This panel shows the list of output devices, but by itself it does not create a combined output. Some audio drivers add their own multi-output or stereo mix option here; look for a vendor-specific tab, button, or playback option in the properties for the active device.

As a separate route, check the configuration utility supplied by your audio driver or sound card. Some Realtek, motherboard, USB, or display audio packages include a multi-stream or simultaneous output setting. Open that utility from the Start menu and look for routing, playback, or output device options. If present, enable the devices you want to use together, apply the change, and keep both devices connected.

For Windows 11, another built-in option may be available for Bluetooth audio. If your PC and audio accessories support it, search for Bluetooth devices in Windows Settings, connect two supported audio devices, and look for a setting that lets audio play from both the PC and a connected audio accessory at the same time. This option is not available on every Windows 11 PC and may require specific Bluetooth support.

If no built-in route matches your setup, open the app that plays your audio. Some media players, video calling apps, and audio tools can select a different output device from the one Windows uses by default. In a video call app, for example, check the audio or speaker settings and choose a second output device. This can be a simple way to send call audio to headphones while system sounds stay on the speakers, but it may not duplicate the same stream to both devices.

When you want playback through several devices at the same time and no built-in option is available, a separate audio routing tool may be required. Install only software from a source you trust, then follow its instructions for creating a multi-output route. This type of tool may ask for exclusive control of an audio endpoint, so close unnecessary audio apps before testing.

Check the output

Use a steady test sound, such as voice or a tone, rather than a short notification. While the sound plays, check each connected output device for audible playback. Mute one device at a time if possible to confirm that the sound is really coming from each expected output.

Open the volume mixer in Windows and confirm that the app or device levels are not set to zero. Listen for obvious delay, echo, or clipping. When two output devices play the same source, a small timing difference is common and may be more noticeable with Bluetooth speakers. The output format and sample rate are not changed by simply adding a device, but a combined route may be limited by the least capable device in the chain.

Common problems and next steps

If one device stays silent, first check whether Windows still shows it as an output device. Disconnect and reconnect USB devices, and try a different port if the device is not detected. In the classic sound panel, set the silent device as the default temporarily and play audio again. If it works alone but not in a combined route, the route or driver may not support that device in multi-output mode.

If the audio is delayed or echo is distracting, remove Bluetooth devices from the route and test with wired speakers or headphones. Bluetooth often adds more latency than a wired output. When using separate routing software, look for a buffer, sync, or delay setting. Start with a small buffer and increase it only if you hear dropouts.

If the output is distorted, lower the Windows volume and any software gain. Some audio tools raise the input level or add processing by default, which can make quiet sources louder but also increase background noise. Keep background noise reduction or enhancements off while checking the signal path, because processing can mask the actual device behavior.

After a failed attempt, return the default output device to the original setting. If you changed driver options, reopen the same audio utility and disable the multi-output or simultaneous playback setting before removing hardware. This keeps the setup reversible and helps avoid surprising behavior when you connect the devices again.