JBL's Everest Elite cans let you hear actual reality in VR
 

Normally when you're tooling around in a virtual world, you want the experience to be as immersive as possible. But there's a downside to being cut off from the outside world -- what if the phone rings or the pizza guy starts knocking or a crazed ax...

https://www.engadget.com/2016/09/13/...reality-in-vr/