Comes with a proper power supply. Note: Channels 6 and 7 are not working.

This PreSonus ACP88 8 - Channel Audio Compressor, Limiter, and Gate Device is a useful tool for audio processing. When using it, first make sure to connect the correct power supply that comes with the product. However, be aware that Channels 6 and 7 are not functioning, so you'll need to rely on the other channels for your audio work. To keep it in good condition, store it in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. When you're done using it, turn off the power properly to save energy and prevent potential damage. If you have any further questions, don't hesitate to seek professional help.