Kaset yang berisi rekaman maupun yang belum berisi rekaman, kaset-kaset rekaman, VCD, DVD, CD (compact disc), pesawat penerima radio, televisi, tape recorder, video, gramaphone, pickup, rewinder, amplifier, loud speaker, speaker mobil, microphone, megaphone, headphone, pita-pita magnetik, pita cassette, pita video disk recorder, laser disk, piringan hitam, compact disk (audio,video), parabola, baterai, batu baterai