As an audio-visual technician, you both set-up and monitor equipment like cameras, projectors, speakers, microphones, sound systems, and other AV equipment as needed by a client. Your responsibilities require extensive knowledge of various AV equipment, how to use it, and when it is needed. Your duties include testing the equipment prior to use, troubleshooting issues with sound or visuals, and taking the equipment down and storing it after you no longer need it. As a freelance AV tech, you provide these services on your own and often provide your own equipment. As a result, you also engage in the day-to-day operations of running a business, such as marketing and scheduling.