portable sound systems 
Small self-contained sound reproduction equipment that can be carried easily from one place to another.
portable CD radio cassette recorder
Equipment combining a radio, cassette player, CD player and speakers in the same case.
Device receiving radio waves broadcast by a station.
Slot that takes the plug from the headphones.
Unit designed to accept a power cable, which can be plugged into an electrical outlet.
Rigid case containing a recording tape on which sounds can be recorded.
Device used to play back and record sounds on a recording tape cassette.
cassette player controls
Buttons used to play and record a cassette.
Button used to select a broadcast frequency.
Equipment used to receive signals transmitted by radio stations.
Integrated device used to generate sound.
compact disc player controls
Buttons such as play, stop, pause and track change that are used to play a compact disc (CD).
Digital recording medium with multiple formats (including video and audio) and variable storage capacity.
compact disc player
Device using a laser beam to play back sounds recorded on a compact disc (CD).
Device used to select the operating mode (radio, cassette player or CD player).
Button that adjusts the relative volume of the right and left speakers.