Using these Aviom A-16II personal mixers is easy. First, connect them to your network as they don't have built - in power supplies. You can then use them to adjust audio levels for personal listening. Remember, since there are no power supplies included, make sure your network can provide stable power. For maintenance, keep them in a clean and dry place. If there are any connection issues, check the network cables. That's it! Enjoy your personalized audio experience.