You can use both headphone jacks together by treating them as separate audio outputs

Most PCs have two audio jacks: one for headphones (usually green) and one for a microphone (usually pink). These are not interchangeable — the headphone jack outputs sound, and the microphone jack inputs sound. If your PC has two headphone jacks, one is likely a line-out jack (for speakers or powered devices) and one is a headphone jack (with built-in amplification). You can plug headphones into both at the same time, and both will play audio simultaneously, but you need to configure Windows to recognize them as separate devices first.

If you have a newer PC with USB-C or a laptop with limited ports, you may need to use a USB audio adapter or USB hub with audio ports to add a second headphone output. The steps differ slightly depending on whether your jacks are built into the motherboard or connected through an external device.

Key Takeaways

  • Windows treats each physical audio jack as a separate playback device, so you can send different audio to each one independently.
  • Open Sound Settings and check the "App volume and device preferences" section to route specific programs to specific jacks.
  • If both jacks play the same audio, you may need to disable one in Device Manager or set it as a non-default device.
  • USB audio adapters work on any PC and give you a second headphone output without opening the case.
  • Test each jack separately before configuring them to confirm both are working and recognized by Windows.

Identify which jacks you actually have

Before you plug anything in, look at the back or side of your PC and locate the audio ports. The headphone jack is usually green and labeled with a headphone symbol. The microphone jack is usually pink and labeled with a microphone symbol. If you see two green jacks, one is likely the headphone output and the other is the line-out — a lower-power output meant for powered speakers or audio equipment, not headphones.

If your PC has only one headphone jack, you will need to add a second one using a USB audio adapter. These are inexpensive (typically under $20) and plug into any USB port on your PC. Once plugged in, Windows will recognize it as a second audio device within seconds.

Laptops often have only one audio jack that handles both headphones and microphone input. If that is your situation, a USB adapter is your only option for a second headphone output.

Open Windows Sound Settings and check your devices

Right-click the speaker icon in the bottom-right corner of your taskbar and select Open Sound settings. You will see a section called "Output" that lists all the audio devices Windows recognizes. Each physical jack should appear as a separate device — for example, "Speakers" and "Headphones" or "Line Out" and "Headphones."

If you see only one device listed, Windows may not be recognizing your second jack. Unplug any headphones, wait five seconds, and plug them back in. If the second jack still does not appear, go to the Device Manager (right-click the Start button and select Device Manager), expand "Sound, video and game controllers," and look for audio devices with a yellow warning triangle. If you find one, right-click it and select "Update driver" or "Enable device."

Once both devices appear in Sound Settings, you are ready to route audio to each one separately.

Route different programs to different jacks

Windows 10 and 11 let you send audio from different programs to different jacks without unplugging anything. In Sound Settings, scroll down and click App volume and device preferences. You will see a list of all open programs that are currently playing sound.

Click on any program in the list, and a dropdown menu will appear under "Output device." Select which audio jack you want that program to use. For example, you could send Spotify to your headphones jack and Discord to your line-out jack at the same time. Each program remembers its setting, so you only have to configure this once.

If you do not see a program listed, open it and start playing audio. It will appear in the list within a few seconds. Close the Sound Settings window and the audio will continue playing through the jack you selected.

Set a default device if both jacks play the same audio

If you plug headphones into both jacks and both play the same audio, Windows is treating them as a single stereo pair rather than two separate devices. To fix this, go back to Sound Settings and look for an option called Volume mixer or Advanced (the exact name varies by Windows version).

In the Advanced section, find your second audio device and check whether it is set as the default playback device. If both are set as default, Windows will send audio to both. To use them independently, set only one as the default, then use the "App volume and device preferences" method above to route specific programs to the non-default jack.

Alternatively, right-click the non-default device and select "Disable" if you want to use only one jack at a time. You can re-enable it later from the same menu.

Use a USB audio adapter for a second output

If your PC has only one headphone jack or you need more than two outputs, a USB audio adapter is the simplest solution. Plug it into any available USB port on your PC. Windows will recognize it within a few seconds and add it to your Sound Settings as a new device.

USB adapters come in two types: USB-A (the standard rectangular connector) and USB-C (the newer, smaller connector). Check which USB ports your PC has before you buy. Most adapters include both a headphone jack and a microphone jack, so you get both input and output from a single device.

Once the adapter is plugged in, it appears in Sound Settings just like a built-in jack. You can route programs to it using the "App volume and device preferences" method, or set it as your default device. The adapter will stay connected and remembered by Windows even if you unplug it and plug it back in later.

Test both jacks to confirm they work independently

Plug headphones into your first jack and play audio from a program. You should hear sound in the headphones. Without stopping the audio, plug headphones into your second jack. If both jacks are configured correctly, you should hear the same audio in both sets of headphones.

Now open a second program and use "App volume and device preferences" to send it to the second jack. You should hear the first program in one set of headphones and the second program in the other set. If you hear both programs in both headphones, go back to Sound Settings and confirm that each program is routed to the correct device.

If one jack produces no sound, check that it is not muted or disabled in Sound Settings. Right-click the device and select "Enable device" if it shows a disabled status. If it still does not work, the jack may be damaged or the driver may need updating.

Frequently Asked Questions

Can I use both jacks at the same time if they are on different USB devices?

Yes. Windows treats each USB audio adapter as a separate device, so you can plug multiple adapters into different USB ports and use all of them simultaneously. Each one will appear in Sound Settings as its own device, and you can route programs to any of them using the "App volume and device preferences" method.

What if Windows does not recognize my second jack?

Unplug the jack, restart your PC, and plug it back in. If it still does not appear, open Device Manager, right-click "Sound, video and game controllers," and select "Scan for hardware changes." If you see a device with a yellow warning triangle, right-click it and update the driver. You may need to visit your PC manufacturer's website to read the latest audio drivers.

Do both jacks have to play the same audio?

No. Using "App volume and device preferences," you can send different programs to different jacks so each one plays separate audio. This is useful if you want to listen to music on one jack while recording a video call on the other, for example.

Will using both jacks at once reduce the sound quality?

No. Each jack operates independently, so using both does not affect the audio quality of either one. The sound quality depends on the quality of your headphones and the audio file itself, not on how many jacks are in use.

Can I use a splitter cable instead of a USB adapter?

A splitter cable lets you plug two sets of headphones into one jack, but both will play the same audio and you cannot control them separately. A USB adapter or a second built-in jack is the only way to send different audio to two different headphones at the same time.