Reddit mentions of 3.5mm stereo headphone jack to 2x RCA Stereo female adapter 2 pack

Here's how I solved it (had the same problem):

Get a PS2 or PS3 composite cable (they are identical). I think most PS3s came with this analog cable instead of an HDMI cable, so you might already have it. You'll be only using it for audio, don't worry. Then find an adapter like this one and a female to female adapter. Note that you can find both adapters for much less with a bit of search.

Now you can plug in your headphones, but they won't work initially. You need to configure the console. Go to Settings -> Sound Settings and enable "Audio Multi-Output".

So would something like this work?

https://www.amazon.com/gp/product/B01MCVCZII/ref=crt_ewc_title_dp_2?ie=UTF8&psc=1&smid=A1SZXUXPW13NEQ

https://www.amazon.com/gp/product/B01MCVCZII/ref=crt_ewc_title_dp_2?ie=UTF8&psc=1&smid=A1SZXUXPW13NEQ

Hey! I have a method that might work for you to get the sound to our headphones.

A lot of modern TVs have red/white ports on them that are there to connect to external speakers, if your TV has these you can grab an adapter like This and a splitter like This hook those together and into your TV then plug in your headphones. if the sound is still coming out of your tv there might be a setting to turn off the built in speakers. I hope this helps! and if you need more clarification just let me know! Good luck!