On the back of your Spire Studio, you will see a button labeled Phantom Power. Phantom Power refers to the DC voltage required to operate condenser microphones. If you own a condenser microphone, enable this button to provide 48V of power to the microphone when connected.
WARNING: Be sure to disable phantom power before connecting or disconnecting your microphone! Connecting or disconnecting a microphone with phantom power enabled can cause damage to it. DO NOT use phantom power if you have a dynamic microphone.