Exploring the internal design of a modern boom box. The Panasonic RXFT570 stereo radio cassette recorder ( often referred to as a boom box ) dates from the 1990's and shows the evolution of cassette and audio technology from the vintage cassette recorder designs of the 1960's. Featuring modular construction, IC chip electronics and quality amplification, this machine has excellent sound, ease of operation and durability. It also has the classic black 'stealth' look of machines from this time period.