Mobile or fixed supports, holders, racks, stands, mounting brackets and mounting racks adapted for loudspeakers, display monitors, computer hardware workstations, TV sets, computers, media players and keyboards; mounting brackets and racks adapted for audiovisual equipment, computer hardware, and electrical control apparatus in the nature of power adapters; loudspeakers; cases specially developed for the transport and protection of audiovisual equipment in the nature of speakers, soundbars, f...