9 Audio amplifiers; Audio mixers; Audio speakers; Automated self contained electronic surveillance devices that can be deployed to gather evidence or intelligence in remote locations; Distribution amplifiers for audio and video signals; Electronic products for the manipulation of the frequency, time, and amplitude characteristics of audio signals, namely, audio processors; Electronic switchers for audio and video signals; Loudspeakers, headphones, microphones and CD players; Microphone modules; Microphones; Software to control and improve audio equipment sound quality; Transmitters and receivers for audio and video signals for transmission over twisted pair cables