Loudspeakers; audio apparatus and equipment; cabinets adapted for use with loudspeakers; loudspeaker stands; loudspeaker housings, loudspeaker systems, control apparatus and equipment therefor; electronic controllers for loudspeakers; amplifiers and other sound reinforcement apparatus; sound delivery systems; crossover networks; audio over IP network equipment; apparatus and instruments for capturing, creating, processing, recording, transmission, reproduction or amplification of sound; controls for apparatus and instruments for capturing, creating, processing, recording, transmission, reproduction or amplification of sound; microphones; headphones; computer peripheral devices; sound reverberation units; apparatus and instruments for reinforcing, mixing, modifying, controlling and disseminating sound; controls for apparatus and instruments for reinforcing, mixing, modifying, controlling and disseminating of sound; computer software for use in conjunction with any of the foregoing apparatus and equipment; parts and fittings for all the aforementioned goods.