Why do not mute TV audio automatically while headphones are plugged in?

Hello Viking!

I can tell you from personal experience using everything from the xbox issued headsets to my current Astro's, the tv will never mute when you plug in your headphones to the controller.

Here is guide for headphone setup:

https://support.xbox.com/en-US/xbox-one/accessories/connect-compatible-headset

and other options here: https://support.xbox.com/en-US/xbox-one/accessories/stereo-headset-set-up-troubleshoot

Notes

• You might also have game audio coming from your TV. If you don’t want to hear the TV, simply turn down the volume on your TV. (When you plug a headset into the adapter on your controller, sound from the TV is not automatically muted or adjusted.)
• When you plug a compatible headset into your Xbox One Wireless controller, chat audio through Kinect is automatically muted.

I also hear audio through my TV

The Stereo Headset Adapter doesn’t know if you’re using your headset just for chat or for all audio, so TV audio is not automatically muted when you’re using the adapter. You must manually adjust your
TV audio volume.

Hope this helps!

Once the headphones are connected, double-tap the guide button on the controller, and navigate to the bottom for headset settings.

You should find an adjustable headset volume setting. That will be the game volume in your headphones.

Please note that audio will still play from the TV even while headphones are connected to the controller. You can just mute your TV volume while using the headphones.

My only guess would be the adapter you bought is faulty, however, I'm just wondering if you have an "Audio Out" on your tv you could use instead. That way you can use your plain HDMI cable to your tv and plug in your headphones to the audio out and mute
the tv.

If you're talking about the Xbox One's Stereo Headset Adapter, then yes you can mute the TV. The adapter will allow ytou to play all of game, chat and system audio through the headphones and, like I do, mute the TV.

Hey there RatedRLegend!

I can totally understand that you wouldn't want to wake up your neighbors. If you don't want to hear the TV audio, simply turn down the volume on your TV. You will still be able to hear in game audio on your headset. When the headset is plugged in, sound
from the TV is not automatically muted or adjusted.