Comes with the correct power supply for seamless operation.

To use this Roland M - 400 mixer, first, connect it to the correct power supply that comes with it. Then, connect your audio sources to the appropriate channels. You can adjust the volume, balance, and other settings on the console to get the sound you want. When it comes to maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. Regularly check the connections to make sure they are secure. If you notice any issues, stop using it immediately and contact customer support.