The term 'audio system component' refers to two components that are commonly found in audio systems: an amp (3 letters) and a tapedeck (8 letters). An amp, or amplifier, is an electronic device that increases the strength of a signal, usually an audio signal. It is used to increase the volume of sound from a speaker or other audio device. A tapedeck is a device used to play and record audio recordings on magnetic tape. It is often used to play music from cassette tapes.