Boombox is a common term for a portable transistorized cassette tape recorder/player and AM/FM radio (and, beginning in the 1980s, a CD player) with an amplifier, two or more loudspeakers and a carrying handle.
Many models are also capable of recording onto cassette tapes from radio and other sources.
Designed for portability, boomboxes can be powered by batteries as well as by line current. The boombox was introduced to the American market during the mid 70s. The desire for louder and heavier bass led to bigger and heavier boxes. Thus, by the 80s, some boomboxes had reached the size of a suitcase.