Pesawat-pesawat penerima radio, tape recorder, pesawat pengeras dan pengatur suara, headphone, microphone, megaphone, wireless amplifier, amplifier, equalizer, matching transformer, pesawat pemancar dan penerima suara, alay penguat signal antena (bosster), power supplay, stabilizer untuk tegangan listrik, standard micriphone, standard speaker, mixer, power amlifier, segala macam loudspeaker yaitu : ceiling speaker, colum speaker, horn speaker, box loudspeaker, jack box, pesawat televisi, video tape, pita-pita cassette suara, pita-pita cassette video, alat pembalik pita cassette video (viddeo cassette rewinder), segala macam antena yaitu : antena televisi, antena radio, antena parabola beserta perlengkapan dan bahagian-bahagiannya