Using this Ashly GQX-3102 equalizer is easy. First, connect it to your audio system using the appropriate cables. Then, plug in the provided power supply. You can adjust the bands to fine - tune the sound according to your preference. When using, make sure the power supply is stable and avoid over - voltage situations. For maintenance, keep it in a dry and clean place. Regularly check the cables for any signs of damage. If you notice any unusual sounds or malfunctions, turn it off immediately and contact customer support.