Tape recorder, amplifier, speaker, equalizer, tuner/radio, compact disc player, VCD player, DVD player, laser disc player, kabel audio, microphone, pesawat telepon, pesawat televise, diskette, alat-alat potret, alat-alat optic, pesawat penggerak otomatis, mesin-mesin bicara, kas register, batu battey, pesawat video, antenna parabola, bosster, ballast, trafo, disk optic, bel pintu listrik, mesin teleks, audio mixer, professional amplifier, sound processor (compressor limiter, active crossover, professional aqualizer, echo, delay), profesionaal speaker system (untuk band, untuk lapangan, untuk studio), spepart radio, prepart tape, spepart TV, box speaker, radio telepon, remot control, bel listrik, kumpaaran magnit