Headphones vs Speakers - volume difference

Hi

Did anyone notice a difference in the volume when using headphones and speakers? I got 7.1 heaphones and 2.1 speakers. When I play a scene through my speakers I got 0DB max in Orban but when I play exactly the same scene thought my Headphones it is like +5dB and it is loud as hell.
I got few sounds playing before and the show the same dB but the particular sound is actually many sounds playing at once that are causing the issue. It looks like UE does not have a limit to 0dB on headphones.
Very strange and not quite sure where search to solve this. It should be the same dB on both hardwares.

Any ideas?

Your 2.1 speakers are bass managed, right? So it’s basically stereo.

Now your 7.1 headphones, are those true 7.1 headphones or are they virtual 7.1 headphones?

Are they doing a stereo fold-down? Are they doing virtual speaker arrays and some kind of binaural processing?

Where are you inserting your meter?