It’s an odd sensation.
If someone was whispering in your ear your brain would tell you there’s a sound source an inch or two from your ear.
Listening to orchestral music with the Sundaras my brain is telling me there’s an entire orchestra two inches from my ear which makes no sense.
It’s like my brain is locating the specific source of the sound (the driver) instead of just hearing music.
This is my experience of it. I have no scientific explanation for what’s actually going on (especially considering the Sundaras sound good to pretty much everyone else on the planet). I do know my hearing is messed up in “creative” ways so it could be due to that.
I had a hearing test once - the kind where they put electrodes on your head and monitor the brainwave response. The machine’s interpretation of the results was “Left ear - hearing sucks. Right ear - WTF is that? Did the wires fall off or something?”.
So yeah, it could be my messed up ears.