portable sound systems [4]![click to hear](/images/speaker.jpg)
Small self-contained sound reproduction equipment that can be carried easily from one place to another.
portable radio ![click to hear](/images/speaker.jpg)
Equipment used to receive signals transmitted by radio stations.
volume control ![click to hear](/images/speaker.jpg)
Button that controls the loudness of the radio.
bass tone control ![click to hear](/images/speaker.jpg)
Button used to adjust the relative level of low-frequency sounds.
treble tone control ![click to hear](/images/speaker.jpg)
Button used to adjust the relative level of high-frequency sounds.
tuning control ![click to hear](/images/speaker.jpg)
Button used to select a broadcast frequency.
telescoping antenna ![click to hear](/images/speaker.jpg)
FM receiving antenna made up of sections that extend upward.
handle ![click to hear](/images/speaker.jpg)
frequency display ![click to hear](/images/speaker.jpg)
Device showing the broadcast frequency of a tuned station.