personal stereo 
noun
A small portable audio player, used with lightweight headphones.A personal stereo with decent headphones can transform a walk or sunbathing session into a private, memorable musical experience....
- Perhaps it's a device that can tune into other people's personal stereos, so she can listen in to their music.
- There are people reading books and pretending to listen to personal stereos underneath placards at every corner now.
- open someone's eyes
- open something up
- open-source
- open space
- open-spoken
- open stage
- open stance
- open stock
- open subroutine
- open system
- open table
- Open Tech
- open texture
- open-textured
- open-texturedness
- open the batting
- open the door to
- open the (or a) way
- open-throated
- open time
- open to dispute
- open-toe
- open-toed
- open to offers
- open-top