Audio speakers; soundbar speakers; signal processors for audio speakers; microphones; Audio mixers; digital audio and video recorders and players; Batteries; earphones; earphone accessories, namely, earphone cushions, earphone pads, earphone cases, and earphone extension cords; headphones; headphone accessories, namely, headphone cushions, headphone pads, and headphone extension cords; loudspeaker systems; loudspeakers; digital signal processing circuitry for loudspeakers and loudspeaker syst...