This unit doesn't come with a power supply. It offers great performance for your microphone setup.

To use this Symetrix 302 Dual Microphone Preamplifier, you'll need to connect it to your own power supply. First, make sure to place it in a stable and dry location. Then, connect your microphones to the appropriate inputs. When it comes to maintenance, keep it clean by gently wiping it with a dry cloth. Avoid exposing it to extreme temperatures or moisture. Remember, since it doesn't have a built - in power supply, always check your external power source before use to ensure it's working properly.