Audio-video receivers; Audio amplifiers; Audio circuit boards; Audio electronic components, namely, surround sound systems; Audio headphones; Audio speakers; Earphones; Earphones and headphones; Loudspeakers; Loudspeakers with built in amplifiers; Loudspeakers, headphones, microphones and CD players; Microphone cables; Microphone modules; Microphones; Microphones for communication devices; Stereo amplifiers

Audio-video receivers; Audio amplifiers; Audio cables; Audio circuit boards; Audio electronic components, namely, surround sound systems; Audio headphones; Audio speakers; Earphones and headphones; Microphone cables; Microphone modules; Microphones; Microphones for communication devices; Stereo amplifiers; Loudspeakers, headphones, microphones and CD players

Audio amplifiers; Audio cables; Audio circuit boards; Audio electronic components, namely, surround sound systems; Audio headphones; Audio speakers; Audio-video receivers; Earphones and headphones; Loudspeakers, headphones, microphones and CD players; Microphone cables; Microphone modules; Microphones; Microphones for communication devices; Stereo amplifiers

Public address (PA) and sound system accessories, namely, amplifiers for wireless communication, audio infrared receivers, and wireless microphones and communication headsets used to reinforce classroom voice and media intelligibility

Amplification equipment, namely amplifiers, audio speakers, microphone headsets, portable battery packs, utilized to assist educators and/or speakers with oral communications directed to their students or their audience respectively