85183000Microphones and stands therefor; loudspeakers, if mounted within their enclosures; headphones and earphones, whether coupled with a microphone, and sets consisting of the microphone and one or more loudspeakers; audiofrequency electric amplifiers; electric audio amplifier set headphones and earphones, if coupled with a microphone, and sets consisting of a microphone https://jamesd778afj4.wikijm.com/user