Comes with a proper power supply for seamless operation.

Using the Shure DFR11EQ is easy. First, connect it to your audio system using the correct cables and plug in the provided power supply. When setting it up, make sure it's placed in a well - ventilated area to avoid overheating. For normal use, adjust the graphic equalizer to your preferred sound settings, and the digital feedback reducer will automatically work to reduce unwanted audio feedback. When you're done using it, turn off the power switch and unplug it. To maintain this product, clean it regularly with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials. Also, store it in a dry place when not in use to prevent damage.