Using this Lexicon MPX 100 dual - channel effects processor is quite simple. First, you need to connect it to a proper power supply (which is not included). Then, connect your audio source to the input ports and the output to your audio system. When using it, make sure the connections are secure to avoid audio interruptions. As for maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. If there's dust on the device, use a soft, dry cloth to gently wipe it. Also, don't try to open the unit by yourself as it may void the warranty and cause damage.