To use this SM Pro Audio PR8E eight - channel microphone preamplifier, first, you need to get a suitable power supply on your own as it's not included. Connect your microphones to the appropriate channels. Then, turn on the power supply and adjust the gain and other settings according to your audio needs. When you're done using it, turn off the power to save energy. As for maintenance, keep it in a dry and clean place. Avoid exposing it to excessive dust or moisture. Regularly check the connections to make sure they are secure. If you encounter any issues, it's best to consult a professional technician.
