Knowledge Base


Phantom Power

Updated May 24, 2022


Phantom Power:

Phantom Power or +48V is a method of sending an electrical current through a microphone cable.  It is most widely used as a power source for condenser microphones.

Condenser microphone capsules require preamplification in very close proximity.  This requires a power source so that the signal can be amplified before traveling very far.  In addition, true condenser microphones (as opposed to electret) require a voltage for polarizing the microphone’s transducer element.  Phantom power provides a voltage for both these purposes.

Dynamic Microphones do not require phantom power.  Plugging a dynamic microphone into a preamp on which phantom power is enabled will either affect the sound or damage the microphone.  Ribbon microphones should never be plugged into a preamp with phantom power engaged.  




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