Abstract: A speaker includes an audio arrangement and a lighting effect system. The audio arrangement includes a control module and a speaker module operatively linked to the control module, wherein the speaker module defines an audio output side in front of said speaker module for generating an audio signal. The lighting effect system includes a speaker cover coupled at the audio output side of the speaker module and a lighting arrangement supported by the speaker cover for generating a light effect at the audio output side of the speaker module to synchronize with the audio signal thereof, so as to provide a single light-and-audio source.