new 4k pvr with my fiber connection.

Ok so I just got fiber put in yesterday and as a little bonus cause I have to put the router in my office and the PVR has to stay connected at all times I now have a receiver in my office.  my monitor has a second HDMI but no speakers of course.  But I do have blue tooth headphones.  I did notice no audio jacks on the back except for optical in.  But I also noticed a Bluetooth symbol.  I assume that's for a remote and not for headphones.  is there any way to get the headphones.