Headphones; Audio receivers; Audio transmitter units; Sound amplifiers; Transceivers; Microphones; Assistive listening devices, not for medical purposes; Audio interpretation consoles; Simultaneous interpretation transceivers and receivers; Audio transmitter unit for monitoring, managing, and controlling multi-channel audio streams to personal listening devices, mobile devices, and electronic devices; Audio transmission systems comprised primarily of audio transmitters and audio receivers, for language translation and interpretation, hearing assistance, courtroom applications, intercoms, tours, and audio streams and broadcasts in public and private venues; Recorded or downloadable computer and mobile application software, namely, software for connecting, monitoring, and managing the performance and function of audio systems and broadcasts for assisted hearing, language translation and interpretation, tours, intercoms, and accessing audio streams and broadcasts in public and private venues; Recorded or downloadable computer and mobile application software, namely, software for transmitting and distributing data or audio via a global computer network or the internet; Recorded or downloadable computer and mobile application software, namely, software for assisted listening in connection with wireless receivers, transceivers, and smartphones; Recorded or downloadable computer and mobile application software, namely, software for accessing audio streams for purposes of assisted, enhanced, or personal listening purposes; Recorded or downloadable computer and mobile application software, namely, software for analyzing, planning, and implementing networks for evaluating audio transmission capabilities; Accessories for assisted listening devices and audio transmitter units, namely, antennas, mounting devices, power supplies, battery chargers, microphone clips, belt clips, earphones, headphones, and neck loops