You need simple stereo speakers with 3.5mm jack.
There is number of threads on the forum with similar issues:
I've been trying to mess around with settings for hours , but I cannot get my Audio to sound right on my new rig with Windows 10 compared to my old Windows 7 rig. I have the same headphones, but my new recordings sound terrible in comparison. I use Logitech g933's and I have tried with Virtual...
obsproject.com
Okay, so i found something out recently with my OBS which is quite weird. When i stream, the audio is fine. When i do a local recording, the audio is kind of washed out and sounds like "background" noise compared to when streaming. I found out what was causing this and how to fix it but it...
obsproject.com
The Logitech G933 Gaming Headset device is not the best choice for capturing.
From other threads (for example -
https://obsproject.com/forum/threads/surround-downmixing-support.54686/) on this forum I can recommend to avoid "surround" devices for capture if you not running OBS with surround output (OBS Audio configured to output 5.1 or 7.1).
By the way, OBS v29.1.
2 is available.