Speaker, speaker activ, tape recorder, amplifier, equalizer, booster, tuner/radio, oompaot diso player, VCD player, DVD player, laser disc player,kabel amio, microphone, pesawat telephon, pesawat televisi, diskette, pesawat penggerak: otomatis, mesin - mesin bioara, batu battery, pesawat video, antena parabola, ballast, trato, disk optik, bel pintu listrik, meain teleks, audio mfz:er , professional power amplifier, sound processor (compressor limiter, active crossover,professional equalizer, echo, delay), professional speaker system (untuk band, untuk,lapangan, untuk studio), pesawat komputez, computer disk, perangkat lunak computer,disk dan pita kaset audio dan video, kaset, disk audio yang belum direkam