Using this amplifier is easy. First, connect your input source to the amplifier's input port. Then, connect the output of the amplifier to your desired device. Make sure all connections are secure to avoid signal loss. When using, keep it in a well - ventilated area to prevent overheating. To maintain it, clean the exterior regularly with a soft, dry cloth. Avoid getting it wet or exposing it to extreme temperatures. If you notice any issues with the signal or performance, check the connections first before seeking further troubleshooting.