Sound output from headphones is strange or similar to surround sound.
Note: 2024 TV models (BRAVIA 2 S20, BRAVIA 3 S30, BRAVIA 7 XR70, BRAVIA 8 XR80 and BRAVIA 9 XR90) do not have a Headphone jack for wired headphone connection. You may connect your Bluetooth headphones to TV via Bluetooth connection, learn how to do so by referring to [VIDEO] How To: Connect Bluetooth Headphones to your Sony TV
For other models that have Headphone / AUDIO OUT jack, use a 3-pole stereo mini plug.
Plugs with 4 poles or more, like headphones for iPhone, are not supported.