Using the Behringer MINIFBQ FBQ800 is a breeze. First, connect it to your sound system according to the standard audio connection methods. You can use the FBQ Feedback Detection system by simply turning it on. It'll quickly show you the critical frequencies, which can help you adjust the sound to avoid feedback. The low - cut filter is handy when you notice unwanted low - frequency noises like floor rumble. Just switch it on to get rid of those nuisances. For level control, use the 6 - segment LED input/output meters as your guide to set the sound levels precisely. When it comes to maintenance, keep the unit clean by gently wiping it with a dry cloth. Avoid exposing it to extreme temperatures or humidity. If you have multiple Mini Series models, you can stack them on top of each other, but make sure they're placed stably to prevent any accidental falls. With proper use and care, your FBQ800 will serve you well for a long time.