To use the BBE 482 Sonic Maximizer, first connect it to your audio system using the appropriate cables. Then, plug in the correct power supply that comes with the device. Turn on your audio system and the maximizer. You can adjust the settings according to your preference to enhance the audio quality. When not in use, make sure to turn off the device and unplug the power supply. Keep it in a dry and cool place to avoid damage. Clean the device regularly with a soft, dry cloth to maintain its performance.