Embodiments include a portable system for delivering multi-sensory stimulation to a user in association with audio-visual content. The system comprises sensory output modules individually capable of delivering a different sensory output to the user in synchrony with a corresponding portion of the audio-visual content, and a housing comprising the modules and configured for attachment to an electronic device capable of presenting the audio-visual content to the user. Embodiments also include a method of delivering multi-sensory stimulations to a user in association with audio-visual content provided by an electronic device. The method comprises receiving an audio signal associated with the audio-visual content via a wireless transceiver; broadcasting the audio signal to sensory output modules; at the modules, generating a sensory output command based on the audio signal and a sensory output capability of the module; and outputting a sensory output from each of the modules based on the command generated thereby.