Intercoms; Megaphones; Radios; Walkie-talkies; Apparatus for transmission of communication; Audio-receivers and video-receivers; Call bells; Cases for music, audio and related electronic equipment, namely, cases for audio tuners, audio receivers, amplifiers, tape players, compact disc players, MP3 controllers/players, audio mixers, audio speakers in the nature of music studio monitors, microphones, audio speakers, compact discs, audio tapes, portable computers, antennas, phonographic record p...