Fast Track c400 headphone stereo question

[thesh]

Hello,
I have had the fast track c400 for a while now and have always used it with monitors so there's a chance it has always been like this and I never noticed it.
The problem:
The manual says that the headphone out is always connected to outputs 1 and 2 and I assumed that it would be something like 1 connected to headphone L and 2 connected to headphone R, but it seems that both (1/2) are connected to both (L/R).
This way I can't really hear any stereo panning difference, for example.
So, is it supposed to work like this or do I have a problem somewhere?

[albee1952]

Is there a Mono/Stereo button anywhere on the interface? Headphone cable plugged all the way in? Headphones verified on some other device?

[thesh]

There's no button, headphone plugged all the way in and verified on other systems.
Tested two headphones that work on other systems.
I hear both channels on both ears (independent of panning). I still don't know if it is supposed to work like this or if there's something wrong.